Click on a day for an hourly weather forecast
The weather in Casper in December is very cold with temperatures between -11°C and -1°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Casper during the month of December. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Casper is going to experience quite a number of days of snow during December. It’s the perfect time to build snowmen, drink hot cocoa, and have a snowball fight. Just remember to wear a warm scarf and a pair of mittens!
Our weather forecast can give you a great sense of what weather to expect in Casper in December 2024.
If you’re planning to visit Casper in the near future, we highly recommend that you review the 14 day weather forecast for Casper before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -1° / -12° | 5 | 12 | 14 | 37 mm | Awful | Casper in January |
| February | -1° / -12° | 6 | 6 | 17 | 51 mm | Awful | Casper in February |
| March | 6° / -6° | 6 | 11 | 14 | 72 mm | Awful | Casper in March |
| April | 9° / -3° | 6 | 10 | 14 | 92 mm | Bad | Casper in April |
| May | 15° / 3° | 9 | 14 | 8 | 99 mm | Bad | Casper in May |
| June | 23° / 9° | 4 | 25 | 1 | 49 mm | Perfect | Casper in June |
| July | 28° / 13° | 2 | 29 | 0 | 40 mm | Perfect | Casper in July |
| August | 27° / 13° | 2 | 29 | 0 | 38 mm | Perfect | Casper in August |
| September | 22° / 9° | 3 | 26 | 1 | 37 mm | Good | Casper in September |
| October | 12° / 0° | 3 | 19 | 8 | 61 mm | Bad | Casper in October |
| November | 6° / -5° | 5 | 14 | 11 | 35 mm | Awful | Casper in November |
| December | -1° / -11° | 7 | 10 | 14 | 45 mm | Awful | Casper in December |