Click on a day for an hourly weather forecast
The temperatures in Vallejo in December are quite cold with temperatures between 7°C and 14°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Vallejo 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.
Our weather forecast can give you a great sense of what weather to expect in Vallejo in December 2024.
If you’re planning to visit Vallejo in the near future, we highly recommend that you review the 14 day weather forecast for Vallejo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 15° / 6° | 5 | 27 | 0 | 59 mm | Good | Vallejo in January |
| February | 16° / 7° | 4 | 24 | 0 | 60 mm | Good | Vallejo in February |
| March | 17° / 7° | 5 | 26 | 0 | 58 mm | Good | Vallejo in March |
| April | 20° / 8° | 2 | 28 | 0 | 22 mm | Good | Vallejo in April |
| May | 22° / 10° | 1 | 30 | 0 | 13 mm | Good | Vallejo in May |
| June | 26° / 13° | 0 | 30 | 0 | 5 mm | Perfect | Vallejo in June |
| July | 27° / 13° | 0 | 31 | 0 | 2 mm | Perfect | Vallejo in July |
| August | 27° / 14° | 0 | 31 | 0 | 2 mm | Perfect | Vallejo in August |
| September | 28° / 15° | 0 | 30 | 0 | 3 mm | Perfect | Vallejo in September |
| October | 24° / 13° | 2 | 29 | 0 | 26 mm | Perfect | Vallejo in October |
| November | 18° / 9° | 3 | 27 | 0 | 35 mm | Good | Vallejo in November |
| December | 14° / 7° | 5 | 26 | 0 | 48 mm | Good | Vallejo in December |