Clearlake in December
5.7out of 10
Possible, with caveats
Cool: highs only around 12°C. Frequent rain: about 11 rainy days.
12°CAvg high
4°CAvg low
11Rainy days (157 mm)
9:17 hDaylight
07:28Sunrise · 16:45 Sunset
Why this score
- Cool: highs only around 12°C
- Frequent rain: about 11 rainy days
- Rain varies a lot between years (±5.7 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 (±5.7 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 | 4°C | 155 mm | 11 | – | – | 5.7 |
| February | 14°C | 4°C | 152 mm | 10 | – | – | 6.1 |
| March | 16°C | 6°C | 119 mm | 10 | – | – | 6.5 |
| April | 18°C | 7°C | 55 mm | 7 | – | – | 7.6 |
| May | 23°C | 11°C | 37 mm | 5 | – | – | 8.4 |
| June | 27°C | 14°C | 12 mm | 2 | – | – | 8.8 |
| July | 31°C | 18°C | 1 mm | 0 | – | – | 8.5 |
| August | 31°C | 17°C | 2 mm | 0 | – | – | 8.6 |
| September | 29°C | 15°C | 5 mm | 1 | – | – | 9.0 |
| October | 23°C | 11°C | 39 mm | 4 | – | – | 8.6 |
| November | 16°C | 6°C | 80 mm | 7 | – | – | 7.2 |
| December | 12°C | 4°C | 157 mm | 11 | – | – | 5.7 |
Frequently asked questions
How hot is Clearlake in December?
Daytime highs average 12°C and nights about 4°C.
When is the best time to visit Clearlake?
The best months are September, June, August, October.