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Rapid City, SD weather and climate

Pennington County, SD · population 76,836 · about 3,389 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at Rapid City's own coordinates.

The year at a glance

Sunny days
245
clear or partly cloudy, per year
Precipitation
25 in
per year
Wet days
119
rain or snow per year
Snowfall
53 in
per year
Hot days
23
above 90 °F
Freezing nights
145
at or below 32 °F
Humidity
59%
average relative
Average temperature
48 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
20406080JanMarMayJulSepNovDaily high, Jan: 37 °FDaily high, Feb: 38 °FDaily high, Mar: 47 °FDaily high, Apr: 55 °FDaily high, May: 65 °FDaily high, Jun: 76 °FDaily high, Jul: 84 °FDaily high, Aug: 83 °FDaily high, Sep: 74 °FDaily high, Oct: 59 °FDaily high, Nov: 47 °FDaily high, Dec: 38 °FDaily low, Jan: 16 °FDaily low, Feb: 17 °FDaily low, Mar: 26 °FDaily low, Apr: 34 °FDaily low, May: 45 °FDaily low, Jun: 55 °FDaily low, Jul: 62 °FDaily low, Aug: 60 °FDaily low, Sep: 51 °FDaily low, Oct: 38 °FDaily low, Nov: 27 °FDaily low, Dec: 19 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high373847556576848374594738
Daily low161726344555626051382719

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.0JanMarMayJulSepNovRapid City, Jan: 0.5 inRapid City, Feb: 0.8 inRapid City, Mar: 1.6 inRapid City, Apr: 3.2 inRapid City, May: 4.4 inRapid City, Jun: 3.8 inRapid City, Jul: 3.1 inRapid City, Aug: 2.4 inRapid City, Sep: 1.6 inRapid City, Oct: 2.0 inRapid City, Nov: 0.8 inRapid City, Dec: 0.6 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rapid City0.50.81.63.24.43.83.12.41.62.00.80.6

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovRapid City, Jan: 20 daysRapid City, Feb: 18 daysRapid City, Mar: 18 daysRapid City, Apr: 15 daysRapid City, May: 17 daysRapid City, Jun: 22 daysRapid City, Jul: 25 daysRapid City, Aug: 25 daysRapid City, Sep: 23 daysRapid City, Oct: 21 daysRapid City, Nov: 20 daysRapid City, Dec: 21 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Rapid City201818151722252523212021

Compare Rapid City with another city

Nearby cities and popular picks. Any two cities can be compared from the home page.

See weather for every covered South Dakota city

About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).