WEATHER IN Rapid City
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -27 (1950) | 12.7 | 24.3 | 36.0 | 76 (1987) |
| february | -31 (1996) | 14.0 | 26.1 | 38.1 | 75 (1995) |
| march | -21 (1996) | 22.6 | 35.4 | 48.2 | 83 (2007) |
| april | 1 (1975) | 31.2 | 43.9 | 56.6 | 93 (1989) |
| may | 18 (1950) | 41.7 | 54.1 | 66.5 | 98 (1969) |
| june | 31 (1951) | 51.6 | 64.6 | 77.6 | 109 (2002) |
| july | 39 (1959) | 58.5 | 72.4 | 86.4 | 111 (2006) |
| august | 38 (1966) | 56.2 | 70.8 | 85.4 | 107 (2007) |
| september | 18 (1985) | 46.4 | 61.3 | 76.1 | 104 (1960) |
| october | -2 (1991) | 33.7 | 47.1 | 60.4 | 96 (2011) |
| november | -19 (1959) | 21.9 | 34.6 | 47.3 | 83 (1999) |
| december | -30 (1990) | 13.9 | 25.6 | 37.2 | 75 (1965) |
| year | -31 (1996) | 33.8 | 47.0 | 60.2 | 111 (2006) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 0.31 | 0.01 (1914) | 1.77 (1944) | 1.26 (1944) |
| february | 0.50 | 0.02 (1905) | 1.99 (1953) | 0.87 (1953) |
| march | 0.91 | 0.02 (1981) | 3.34 (1902) | 2.01 (1945) |
| april | 2.08 | 0.02 (1987) | 6.47 (1941) | 3.19 (1997) |
| may | 3.45 | 0.09 (1936) | 9.21 (1962) | 3.21 (1965) |
| june | 2.87 | 0.42 (2002) | 7.60 (1968) | 3.78 (1963) |
| july | 2.28 | 0.13 (1890) | 9.66 (1905) | 2.50 (1944) |
| august | 1.59 | 0.10 (1943) | 5.67 (1906) | 2.60 (1982) |
| september | 1.22 | 0.02 (1888) | 5.07 (1913) | 2.13 (1966) |
| october | 1.41 | 0.00 (1921) | 5.60 (1998) | 2.49 (1982) |
| november | 0.47 | 0.00 (1903) | 3.24 (1922) | 1.02 (1944) |
| december | 0.35 | 0.00 (2001) | 1.00 (1909) | 0.92 (1996) |
| year | 16.29 | 7.51 (1936) | 28.89 (1962) | 3.78 (1963) |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |