Ukiah in December
5.3out of 10
Not the best time
Cool: highs only around 12°C. Frequent rain: about 12 rainy days.
12°CAvg high
3°CAvg low
12Rainy days (197 mm)
9:16 hDaylight
07:31Sunrise · 16:47 Sunset
Why this score
- Cool: highs only around 12°C
- Frequent rain: about 12 rainy days
- Rain varies a lot between years (±5.3 days)
What to wear and pack
- A warm jacket
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in December varies a lot between years (±5.3 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 12°C | 3°C | 184 mm | 12 | – | – | 5.5 |
| February | 14°C | 3°C | 172 mm | 11 | – | – | 5.9 |
| March | 16°C | 4°C | 152 mm | 12 | – | – | 6.2 |
| April | 18°C | 6°C | 79 mm | 9 | – | – | 7.3 |
| May | 22°C | 9°C | 48 mm | 6 | – | – | 8.3 |
| June | 26°C | 12°C | 16 mm | 2 | – | – | 8.8 |
| July | 30°C | 14°C | 1 mm | 0 | – | – | 8.7 |
| August | 30°C | 14°C | 2 mm | 0 | – | – | 8.8 |
| September | 28°C | 12°C | 8 mm | 1 | – | – | 8.9 |
| October | 23°C | 9°C | 55 mm | 4 | – | – | 8.5 |
| November | 16°C | 5°C | 109 mm | 9 | – | – | 6.8 |
| December | 12°C | 3°C | 197 mm | 12 | – | – | 5.3 |
Frequently asked questions
How hot is Ukiah in December?
Daytime highs average 12°C and nights about 3°C.
When is the best time to visit Ukiah?
The best months are September, June, August, July.