For reference, the year's highest daily chance of a wet day is 37% on June 5, and its lowest chance is 3% on January 16. Highest and Lowest Humidity Below are the averages during August for maximum and minimum humidity levels in South Dakota. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Rapid City, SD 300 East Signal Drive Rapid City, SD 57701-3800 Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. 2020-2021 Long Range Weather Forecast for Rapid City, SD . There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Rapid City. While towns in South Dakota, North Dakota, Wyoming and Minnesota make the lists for some of the nation's coldest; not one from the Black Hills is included or close to. Weather conditions with updates on temperature, humidity, wind speed, snow, pressure, etc. Daytime temperatures usually reach 29C in Rapid City in August with moderate heat and humidity, falling to 13C at night. 29. Calendar overview of Months Weather Forecast. For reference, on June 20, the longest day of the year, the Sun rises at 5:09 AM and sets 15 hours, 30 minutes later, at 8:39 PM, while on December 21, the shortest day of the year, it rises at 7:25 AM and sets 8 hours, 53 minutes later, at 4:17 PM. Station Data. Annual Weather Averages Near Rapid City. The month with the highest snowfall is March (221mm). Daylight saving time is observed in Rapid City during 2020, but it neither starts nor ends during August, so the entire month is in daylight saving time. Daily low temperatures decrease by 5F, from 61F to 56F, rarely falling below 47F or exceeding 68F. The topography within 2 miles of Rapid City contains significant variations in elevation, with a maximum elevation change of 689 feet and an average elevation above sea level of 3,334 feet. How sunny is it in Rapid City in August? Daily high temperatures decrease by 4F, from 87F to 82F, rarely falling below 70F or exceeding 96F. day night Weather update from Rapid City, Rapid City Regional Airport at 2020-12-06T05:52:00+00:00 Key findings The highest monthly average temperature in Rapid City for July is 78 degrees The latest sunset is 8:16 PM on August 1 and the earliest sunset is 47 minutes earlier at 7:29 PM on August 31. The most pleasant months of the year for Rapid City are June, September and August. The average sliding 31-day rainfall during August in Rapid City is gradually decreasing, starting the month at 1.5 inches, when it rarely exceeds 2.5 inches or falls below 0.7 inches, and ending the month at 1.1 inches, when it rarely exceeds 2.0 inches or falls below 0.3 inches. Dec. 35F 1C. The percentage of time spent in various temperature bands. In Rapid City, the summers are warm and mostly clear and the winters are freezing, dry, windy, and partly cloudy. To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The driest month (with the lowest rainfall) is January (7.6mm). The stations contributing to this reconstruction are: Ellsworth Air Force Base (51%, 13 kilometers, northeast); Rapid City Regional Airport (42%, 15 kilometers, east); Custer County Airfield (3.0%, 49 kilometers, southwest); and Black Hills Airport (4.5%, 63 kilometers, northwest). Hello. 85. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. September and October will have below-normal temperatures, with precipitation below normal in the north and above normal in the south. The wettest month (with the highest rainfall) is May (81.8mm). The month with shortest days is December (Average daylight: 8.9h). How sunny is it in South Dakota in August? Weather in Rapid City, South Dakota. 57 23 1. [2383881], Weather Atlas | 2002-2020 | Yu Media Group d.o.o. The average growing degree days accumulated over the course of August, with 25th to 75th and 10th to 90th percentile bands. High 49F. 63 30 5. Free Long Range Weather Forecast for Rapid City, South Dakota. Based on weather reports collected during 19852015. MERRA-2 Modern-Era Retrospective Analysis. Rapid City Weather Forecast Office 300 East Signal Drive Rapid City, SD 57701-3800 Tel: (605) 341-7531 Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. Weather South Dakota september On average, it is maximum 25 in september in South Dakota and at least around 13 degrees. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. Feb. 34F 1C. The earliest sunrise of the month in Rapid City is 5:41 AM on August 1 and the latest sunrise is 34 minutes later at 6:15 AM on August 31. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon. All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. The hourly average wind direction in Rapid City throughout August is predominantly from the south, with a peak proportion of 33% on August 15. The month with least sunshine is December (Average sunshine: 4.8h). Months with the lowest snowfall are June, July and August (0mm). Place. Rapid City, SD Monthly Weather. The month of August in Rapid City is reliably fully within the growing season. Average Weather in August in Rapid City South Dakota, United States. The estimated value at Rapid City is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Rapid City and a given station. The clearest day of the month is August 20, with clear, mostly clear, or partly cloudy conditions 75% of the time. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. High C. Kuluncak, Turkey (6,215 miles away) is the far-away foreign place with temperatures most similar to Rapid City (view comparison). humidity 41%. 0 in 1 cm. Monthly averages Rapid City Longitude: -103.057, Latitude: 44.0453 Average weather Rapid City, SD - 57703. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. We use cookies and other tracking technologies on the website to improve your browsing experience, display personalized content and targeted ads, analyze website traffic, and learn where our visitors are coming from. South Dakota Interactive Map of Historical Record High and Low Temperatures Months with the highest number of snowfall days are February and December (5.8 days). Weather Atlas: Rapid City, SD - August weather forecast and climate information. Weather data is prone to errors, outages, and other defects. For the purposes of this report, the geographical coordinates of Rapid City are 44.081 deg latitude, -103.231 deg longitude, and 3,238 ft elevation. Severe weather season across western South Dakota and northeastern Wyoming is relatively short compared to much of the Plains and eastern U.S. but also relatively active. Month. Average Weather in Rapid City South Dakota, United States. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Rapid City area. The gear we required for the rest of South Dakota was slightly different to the stuff we used in Badlands National Park so here is our rest of South Dakota packing list. Get the monthly weather forecast for Rapid City, SD, including daily high/low, historical averages, to help you plan ahead. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. Academy. High F. The average hourly temperature, color coded into bands. The average daily incident shortwave solar energy in Rapid City is decreasing during August, falling by 1.0 kWh, from 7.0 kWh to 5.9 kWh, over the course of the month. The solar day over the course of August. In Rapid City, the chance of a wet day over the course of August is very rapidly decreasing, starting the month at 28% and ending it at 16%. The month with the lowest average high temperature is December (2.7C). Named after Rapid Creek, where the settlement developed, it is in western South Dakota, on the Black Hills' eastern slope. Rapid City weather history data including temperature, relative humidity, precipitation, cloudiness and weather extremes in tabular and graphical formats. Time zones for airports and weather stations are provided by AskGeo.com . This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Within 10 miles contains significant variations in elevation (1,991 feet). The percentage of time spent at various humidity comfort levels, categorized by dew point. In Rapid City, there are 3 comfortable months with high temperatures in the range of 70-85. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. The climate in Rapid City during August can be summarized as warm and reasonably dry. The growing season in Rapid City typically lasts for 5.0 months (153 days), from around May 4 to around October 4, rarely starting before April 14 or after May 22, and rarely ending before September 13 or after October 23. 1 in 2 cm. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The black line is the percentage chance that a given day is within the growing season. 54 21 4. The month with the lowest number of rainy days is November (5.3 days). August is in the summer in Rapid City and is typically the 2nd warmest month of the year. Precip. A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. South Dakota sd, Weather 30 Day. Rapid City. Rapid City, South Dakota, USA - August weather averages including high and low temperatures, humidity, rainfall, snowfall, daylight, sunshine, UV index, and sea temperature. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Averages are for Ellsworth Air Force Base, which is 7 miles from Rapid City. Low. Low C. The population was 67,956 as of the 2010 Census.. Months with the highest UV index are June and July (UV index 9). Over the course of the year, the temperature typically varies from 17F to 87F and is rarely below -3F or above 98F. Average Weather in August in Rapid City South Dakota, United States. The month with most sunshine is July (Average sunshine: 10.8h). Get the monthly weather forecast for Rapid City, SD, including daily high/low, historical averages, to help you plan ahead. 47 29 2. Rapid City weather essentials | Monthly Averages . Phoenix picks up first measurable rainfall in nearly 4 months. For reference, on July 18, the muggiest day of the year, there are muggy conditions 3% of the time, while on September 24, the least muggy day of the year, there are muggy conditions 0% of the time. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. 57 32 6. July is the hottest month for South Dakota with an average high temperature of 85.2, which ranks it as about average compared to other states. Daily high temperatures decrease by 4F, from 87F to 82F, rarely falling below 70F or exceeding 96F. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. Months with the lowest number of snowfall days are June, July and August (0 days). We will review the data in question. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. In August, in Rapid City, South Dakota, the average high-temperature is 86.4F (30.2C), and the average low-temperature is 56.7F (13.7C). | Resources, A scenic panoramic view of Rapid City in South Dakota, on a sunny and calm day, with intense tree cover spread out into the horizon, bright sky, In Rapid City, South Dakota, the average relative humidity in, In Rapid City, South Dakota, the average daily maximum UV index in. Chevron right Thank you for reporting this station. Average daily temperatures in August. The shortest day of the month is August 31, with 13 hours, 14 minutes of daylight and the longest day is August 1, with 14 hours, 35 minutes of daylight. Date Weather Pre. The area within 2 miles of Rapid City is covered by artificial surfaces (59%) and grassland (35%), within 10 miles by grassland (67%) and trees (18%), and within 50 miles by grassland (61%) and trees (23%). Share: Get the Long Range Weather for Your Location and early to mid-August. Here you can find all information about the weather in Rapid City in August: >>Overview: Rapid City Weather and Climate in August The most pleasant months of the year for South Dakota are June, September and August. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. Rainfall will be near to below normal. Jan. 32F 0C. When we visited South Dakota we used Rapid City as a base and then travelled out to Mount Rushmore, Custer State Park etc. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Daytime temperatures usually reach 29C in Sioux Falls, South Dakota in August with moderate heat and humidity, falling to 15C at night. For reference, on January 18, the windiest day of the year, the daily average wind speed is 10.2 miles per hour, while on July 29, the calmest day of the year, the daily average wind speed is 7.7 miles per hour. The shaded overlays indicate night and civil twilight. Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures ( 32F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). Rapid City past weather with historical weather conditions for the last 30 days, including history of previous high and low temperatures, humidity, dew point, barometric pressure, wind speed, wind direction, wind gust, and rain fall totals for the Rapid City area and overall Pennington county, South Dakota. We assume no responsibility for any decisions made on the basis of the content presented on this site. Because our weather varies from one community to the next, the averages below are from Rapid City unless otherwise noted. Hi. The month with the lowest relative humidity is August (52.6%). Does it rain in South Dakota in August? Low; Sun 12/6: Mostly sunny and mild: 57F: 32F: Mon 12/7: Plenty of sun The chance that a given day will be muggy in Rapid City is essentially constant during August, remaining within 1% of 1% throughout. Lower dew points feel drier and higher dew points feel more humid. July is the hottest month for Rapid City with an average high temperature of 85.3, which ranks it as about average compared to other places in South Dakota. Report Station. For each station, the records are corrected for the elevation difference between that station and Rapid City according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Months with the lowest UV index are January and December (UV index 1). 38 F Rapid City Regional Airport Station | Report. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. for Rapid City, South Dakota Rapid City Weather Forecasts. uvIndex uvIndexVal. The month with the highest relative humidity is February (65.1%). Rapid City, SD Weather Calendar star_ratehome. support@__remove_this_part__weatherspark.com. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. Rapid City, SD - Weather forecast from Theweather.com. In this report, we use a base of 50F and a cap of 86F. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. High. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. 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