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. Get the monthly weather forecast for Rapid City, SD, including daily high/low, historical averages, to help you plan ahead. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day). In South Dakota, there are 3 comfortable months with high temperatures in the range of 70-85°. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. for Rapid City, South Dakota South Dakota (SD) Rapid City ; Before You Go; Search. The month with the lowest relative humidity is August (52.6%). Over the course of the year, the temperature typically varies from 17°F to 87°F and is rarely below -3°F or above 98°F. 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%). In August , the average heat index (a.k.a. The percentage of time spent in various temperature bands. High °F. 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. Months with the lowest snowfall are June, July and August (0mm). Rapid City weather history data including temperature, relative humidity, precipitation, cloudiness and weather extremes in tabular and graphical formats. There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Rapid City. High. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. 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. Kuluncak, Turkey (6,215 miles away) is the far-away foreign place with temperatures most similar to Rapid City (view comparison). In Rapid City, there are 3 comfortable months with high temperatures in the range of 70-85°. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. Weather conditions with updates on temperature, humidity, wind speed, snow, pressure, etc. Feb. 34°F 1°C. 1:57 am MST sun mon tue wed thu fri sat. The most pleasant months of the year for Rapid City are June, September and August. The average growing degree days accumulated over the course of August, with 25th to 75th and 10th to 90th percentile bands. 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. 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. This report illustrates the typical weather in Rapid City, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Annual Weather Averages Near Rapid City. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. For reference, on July 26, the hottest day of the year, temperatures in Rapid City typically range from 62°F to 87°F, while on January 1, the coldest day of the year, they range from 17°F to 35°F. Rapid City Weather and Climate in August Are you planning a holiday with hopefully nice weather in Rapid City in August 2021? Months with the highest UV index are June and July (UV index 9). 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%. Chevron right Daytime maximum temperatures average around a comfortable 29°C (84°F), whilst at night 13°C (55°F) is normal. 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. Daily low temperatures decrease by 5°F, from 61°F to 56°F, rarely falling below 47°F or exceeding 68°F. Weather Atlas: Rapid City, SD - August weather forecast and climate information. The month with the lowest average high temperature is December (2.7°C). The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. The month with the highest relative humidity is February (65.1%). 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. Named after Rapid Creek, where the settlement developed, it is in western South Dakota, on the Black Hills' eastern slope. Get the monthly weather forecast for Rapid City, SD, including daily high/low, historical averages, to help you plan ahead. Rapid City, SD - Weather forecast from Theweather.com. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. 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. Monthly: 1981-2010 normals The month with the highest number of rainy days is June (12.3 days). Jan. 32°F 0°C. Rapid City, SD Monthly Weather. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Rapid City area. Precip. 10°F-12°C. The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. The percentage of time spent at various humidity comfort levels, categorized by dew point. Weather in Rapid City, South Dakota. Report Station. August is in the summer in Rapid City and is typically the 2nd warmest month of the year. 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. 29. The shaded overlays indicate night and civil twilight. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. 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. Months with the highest number of snowfall days are February and December (5.8 days). 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. South Dakota sd, Weather 30 Day. Rapid City Weather Forecasts. From the start to the end of the month, the length of the day decreases by 1 hour, 21 minutes, implying an average daily decrease of 2 minutes, 41 seconds, and weekly decrease of 18 minutes, 50 seconds. Weather South Dakota september On average, it is maximum 25° in september in South Dakota and at least around 13° degrees. In Rapid City, the summers are warm and mostly clear and the winters are freezing, dry, windy, and partly cloudy. Low; Sun 12/6: Mostly sunny and mild: 57°F: 32°F: Mon 12/7: Plenty of sun A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. 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. Rapid City. Dec. 35°F 1°C. Free Long Range Weather Forecast for Rapid City, South Dakota. The average accumulated growing degree days in Rapid City are rapidly increasing during August, increasing by 620°F, from 1,562°F to 2,182°F, over the course of the month. At one place, Rapid City, humidity data are for 8 am and 5 pm. We will review the data in question. 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. Rapid City, South Dakota, USA - August weather averages including high and low temperatures, humidity, rainfall, snowfall, daylight, sunshine, UV index, and sea temperature. 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. Daily high temperatures decrease by 4°F, from 87°F to 82°F, rarely falling below 70°F or exceeding 96°F. The hours when this month's highest and lowest humidity readings usually occur are given in local standard time. 1 in 2 cm. 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. Date Weather Pre. For reference, on March 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 52%, while on July 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%. The thin dotted lines are the corresponding average perceived temperatures. The climate in Rapid City during August can be summarized as warm and reasonably dry. 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. 'real feel', 'feels like'), that combines relative humidity and air temperature, is evaluated at 89.2°F (31.8°C) . Over the course of August in Rapid City, the length of the day is rapidly decreasing. Daily low temperatures decrease by 5°F, from 61°F to 56°F, rarely falling below 47°F or exceeding 68°F. 57 ° 32 ° 6. 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. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. 40 ° 21 ° 3. In August, in Rapid City, South Dakota, the average high-temperature is 86.4°F (30.2°C), and the average low-temperature is 56.7°F (13.7°C). Here you can find all information about the weather in Rapid City in August: >>Overview: Rapid City Weather and Climate in August 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. 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. We assume no responsibility for any decisions made on the basis of the content presented on this site. 0 in 1 cm. Rapid City, SD Weather Calendar star_ratehome. 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. The chance that a given day will be muggy in Rapid City is essentially constant during August, remaining within 1% of 1% throughout. Daytime temperatures usually reach 29°C in Sioux Falls, South Dakota in August with moderate heat and humidity, falling to 15°C at night. The month of August in Rapid City is reliably fully within the growing season. Low °F. 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. 38 F Rapid City Regional Airport Station | Report. Coldest months (with the lowest average low temperature) are January and December (-10.6°C). Place. Winds SSW at 10 to 15 mph. Station Data. Averages are for Ellsworth Air Force Base, which is 7 miles from Rapid City. Academy. 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