Casper, WY Climate in January

Temperature for January

In Casper, WY during January the average high temperature is 35.4°F. The hottest day on record was January 29, 2011 when the temperature recorded was 64.9°F.

Casper, WY daily average and extreme temperature range for January

Low Temperature

Overnight in January the average temperature drops below freezing at 14.4°F, with the lowest temperature of -32.1°F being recorded on January 29, 1980. On average there are 10 days in January when the temperature stays below freezing all day. In the worst January there were 25 days when the temperature did not make it above freezing. Overnight temperatures drop below freezing between 24 and 31 times in January.

Precipitation for January

In January the average monthly rainfall in Casper, WY is 0.47 inches with rain usually falling on between 0 and 1 days. 1941 was the driest January with only 0.00 inches of rain falling, and 1987 was the wettest January with 1.94 inches of rain. The wettest single day in January was 6 January 1987 when 0.82 inches of rain fell.

In January it usually snows on between 9 and 10 days. In January there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in January.