WEATHER IN Casper
Climate tables. Data for Casper.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -40.0 (1972) | -9.4 | -3.8 | 1.8 | 15.6 (1971) |
| february | -35.6 (2006) | -9.2 | -3.0 | 3.2 | 20.0 (1982) |
| march | -29.4 (1965) | -5.2 | 2.1 | 9.3 | 25.0 (2012) |
| april | -21.1 (1997) | -2.1 | 5.7 | 13.5 | 28.9 (1992) |
| may | -8.9 (1953) | 2.8 | 11.1 | 19.3 | 35.0 (2003) |
| june | -2.2 (1951) | 7.4 | 16.9 | 26.4 | 38.9 (1988) |
| july | -1.1 (1972) | 11.7 | 21.7 | 31.7 | 40.0 (1954) |
| august | 0.6 (1977) | 10.8 | 20.6 | 30.4 | 38.9 (1979) |
| september | -9.4 (1945) | 5.7 | 14.9 | 24.2 | 36.1 (1995) |
| october | -19.4 (1971) | -0.6 | 7.4 | 15.4 | 30.6 (1992) |
| november | -29.4 (1985) | -5.6 | 1.1 | 7.7 | 22.2 (1999) |
| december | -40.6 (1990) | -9.6 | -4.0 | 1.5 | 18.3 (1939) |
| year | -40.6 (1990) | -0.4 | 7.4 | 15.1 | 40.0 (1954) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 12 | 0.0 (1952) | 36 (1987) | 14 (1987) |
| february | 14 | 3 (2005) | 36 (1987) | 15 (1995) |
| march | 21 | 3 (2004) | 62 (1954) | 25 (1958) |
| april | 36 | 2 (1992) | 100 (1974) | 71 (1941) |
| may | 56 | 8 (1966) | 168 (1948) | 56 (2000) |
| june | 34 | 0.8 (1956) | 119 (2003) | 55 (1986) |
| july | 30 | 2 (1991) | 90 (2007) | 45 (1983) |
| august | 20 | 0.5 (1950) | 68 (1979) | 56 (2007) |
| september | 24 | 1 (1948) | 86 (1982) | 51 (1989) |
| october | 30 | 0.0 (1965) | 117 (1998) | 52 (1998) |
| november | 16 | 1 (1949) | 69 (1983) | 25 (1994) |
| december | 16 | 0.8 (1952) | 94 (1982) | 32 (1982) |
| year | 318 | 167 (1988) | 531 (1948) | 71 (1941) |
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 |