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The weather in Missouri in December is very cold with temperatures between -2°C and 3°C, warm clothes are a must.
You can expect rain for roughly half of the month of December in Missouri. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Missouri 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 Missouri in December 2025.
If you’re planning to visit Missouri in the near future, we highly recommend that you review the 14 day weather forecast for Missouri before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -1° / -7° | 6 | 8 | 17 | 104 mm | Awful | Missouri in January |
| February | 1° / -6° | 6 | 7 | 15 | 104 mm | Awful | Missouri in February |
| March | 8° / 0° | 9 | 13 | 9 | 131 mm | Awful | Missouri in March |
| April | 14° / 5° | 10 | 17 | 3 | 161 mm | Bad | Missouri in April |
| May | 21° / 12° | 10 | 21 | 0 | 179 mm | Ok | Missouri in May |
| June | 25° / 16° | 9 | 21 | 0 | 184 mm | Good | Missouri in June |
| July | 27° / 17° | 9 | 22 | 0 | 165 mm | Good | Missouri in July |
| August | 26° / 16° | 7 | 24 | 0 | 138 mm | Good | Missouri in August |
| September | 23° / 13° | 6 | 24 | 0 | 109 mm | Perfect | Missouri in September |
| October | 17° / 8° | 6 | 24 | 1 | 120 mm | Good | Missouri in October |
| November | 9° / 2° | 7 | 18 | 5 | 107 mm | Awful | Missouri in November |
| December | 3° / -2° | 8 | 11 | 12 | 102 mm | Awful | Missouri in December |
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