WEATHER IN Casper
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -40 (1972) | 15.0 | 25.1 | 35.2 | 60 (1971) |
| february | -32 (2006) | 15.4 | 26.6 | 37.8 | 68 (1982) |
| march | -21 (1965) | 22.7 | 35.8 | 48.8 | 77 (2012) |
| april | -6 (1997) | 28.2 | 42.3 | 56.3 | 84 (1992) |
| may | 16 (1953) | 37.1 | 52.0 | 66.8 | 95 (2003) |
| june | 28 (1951) | 45.4 | 62.5 | 79.6 | 102 (1988) |
| july | 30 (1972) | 53.0 | 71.0 | 89.0 | 104 (1954) |
| august | 33 (1977) | 51.4 | 69.0 | 86.7 | 102 (1979) |
| september | 15 (1945) | 42.2 | 58.9 | 75.6 | 97 (1995) |
| october | -3 (1971) | 30.9 | 45.3 | 59.7 | 87 (1992) |
| november | -21 (1985) | 22.0 | 34.0 | 45.9 | 72 (1999) |
| december | -41 (1990) | 14.8 | 24.8 | 34.7 | 65 (1939) |
| year | -41 (1990) | 31.3 | 45.3 | 59.2 | 104 (1954) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 0.49 | 0.00 (1952) | 1.42 (1987) | 0.53 (1987) |
| february | 0.56 | 0.13 (2005) | 1.42 (1987) | 0.59 (1995) |
| march | 0.84 | 0.12 (2004) | 2.43 (1954) | 0.98 (1958) |
| april | 1.41 | 0.08 (1992) | 3.92 (1974) | 2.80 (1941) |
| may | 2.21 | 0.30 (1966) | 6.63 (1948) | 2.22 (2000) |
| june | 1.34 | 0.03 (1956) | 4.69 (2003) | 2.15 (1986) |
| july | 1.19 | 0.09 (1991) | 3.54 (2007) | 1.78 (1983) |
| august | 0.79 | 0.02 (1950) | 2.66 (1979) | 2.21 (2007) |
| september | 0.95 | 0.04 (1948) | 3.40 (1982) | 2.01 (1989) |
| october | 1.19 | 0.00 (1965) | 4.62 (1998) | 2.06 (1998) |
| november | 0.64 | 0.04 (1949) | 2.72 (1983) | 0.99 (1994) |
| december | 0.61 | 0.03 (1952) | 3.71 (1982) | 1.26 (1982) |
| year | 12.52 | 6.56 (1988) | 20.91 (1948) | 2.80 (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 |