December weather in Evanston, WY
The average temperature in Evanston in December is 21.9°F (11.1°F–32.7°F). Average precipitation: 0.71 inches.
December is a winter month in Evanston, and is cooler than the annual average of 42°F. Daily temperatures swing about 21.6°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 9h 2m. For travel, December is cold.
Avg High
32.7°F
Avg Low
11.1°F
Precipitation
0.71 in
Daylight
9h 2m
December records in Evanston
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.9°F (1995) | -11.0°F (1991) | 0.31 in (1909) |
| December 2 | 55.9°F (1910) | -13.0°F (1991) | 0.62 in (1909) |
| December 3 | 60.1°F (1890) | -11.9°F (1945) | 0.80 in (2013) |
| December 4 | 60.1°F (1939) | -17.0°F (1909) | 0.44 in (1941) |
| December 5 | 64.0°F (1939) | -16.1°F (1955) | 0.60 in (2019) |
| December 6 | 57.0°F (1939) | -20.0°F (2013) | 0.55 in (1956) |
| December 7 | 57.9°F (1939) | -16.1°F (1951) | 0.65 in (1901) |
| December 8 | 57.0°F (1940) | -27.9°F (1951) | 0.40 in (2003) |
| December 9 | 60.1°F (1939) | -34.1°F (1951) | 0.46 in (1985) |
| December 10 | 62.1°F (1939) | -27.9°F (1972) | 0.41 in (2000) |
| December 11 | 54.0°F (1933) | -27.0°F (1961) | 0.61 in (1964) |
| December 12 | 54.0°F (2017) | -29.0°F (1932) | 0.33 in (1937) |
| December 13 | 54.0°F (2025) | -32.1°F (1932) | 0.71 in (1996) |
| December 14 | 57.9°F (1929) | -20.9°F (1932) | 0.57 in (1956) |
| December 15 | 57.0°F (1929) | -20.0°F (1972) | 0.30 in (1899) |
| December 16 | 55.9°F (1939) | -15.0°F (1931) | 0.52 in (1934) |
| December 17 | 55.0°F (1976) | -17.0°F (1909) | 0.65 in (1970) |
| December 18 | 52.0°F (1958) | -26.0°F (1909) | 0.26 in (2005) |
| December 19 | 54.0°F (2025) | -27.9°F (1924) | 0.90 in (2013) |
| December 20 | 54.0°F (2024) | -25.1°F (1924) | 0.38 in (1921) |
| December 21 | 57.0°F (1969) | -27.9°F (1990) | 0.51 in (1921) |
| December 22 | 55.0°F (2025) | -31.0°F (1990) | 1.80 in (2015) |
| December 23 | 55.9°F (2025) | -23.1°F (1990) | 0.60 in (1924) |
| December 24 | 54.0°F (2025) | -23.1°F (1924) | 0.75 in (1964) |
| December 25 | 55.9°F (2025) | -20.0°F (1987) | 0.46 in (1922) |
| December 26 | 50.0°F (1902) | -20.0°F (1904) | 0.62 in (1969) |
| December 27 | 51.1°F (1980) | -20.9°F (1987) | 0.38 in (1907) |
| December 28 | 50.0°F (1933) | -22.0°F (1954) | 0.35 in (1946) |
| December 29 | 53.1°F (1933) | -20.0°F (1969) | 0.54 in (1972) |
| December 30 | 53.1°F (1980) | -29.9°F (1978) | 0.42 in (1965) |
| December 31 | 53.1°F (1980) | -29.0°F (1978) | 0.32 in (1941) |