Click on a day for an hourly weather forecast
The weather in Ukiah in December is very cold with temperatures between 3°C and 12°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Ukiah 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.
Please note that Ukiah can expect a few days of snow in December.
Our weather forecast can give you a great sense of what weather to expect in Ukiah in December 2024.
If you’re planning to visit Ukiah in the near future, we highly recommend that you review the 14 day weather forecast for Ukiah before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 13° / 3° | 7 | 24 | 0 | 179 mm | Bad | Ukiah in January |
| February | 14° / 3° | 6 | 21 | 1 | 182 mm | Good | Ukiah in February |
| March | 15° / 3° | 8 | 22 | 1 | 170 mm | Ok | Ukiah in March |
| April | 19° / 5° | 4 | 26 | 0 | 63 mm | Good | Ukiah in April |
| May | 23° / 8° | 3 | 28 | 0 | 42 mm | Perfect | Ukiah in May |
| June | 29° / 11° | 1 | 29 | 0 | 16 mm | Good | Ukiah in June |
| July | 33° / 14° | 0 | 31 | 0 | 2 mm | Good | Ukiah in July |
| August | 33° / 14° | 0 | 31 | 0 | 3 mm | Good | Ukiah in August |
| September | 31° / 12° | 0 | 30 | 0 | 7 mm | Good | Ukiah in September |
| October | 24° / 9° | 3 | 28 | 0 | 70 mm | Perfect | Ukiah in October |
| November | 17° / 5° | 5 | 25 | 0 | 93 mm | Good | Ukiah in November |
| December | 12° / 3° | 7 | 23 | 1 | 160 mm | Bad | Ukiah in December |