Climate averages 1991–2020
Sacramento weather
in December.
A cool, wet month: the coolest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Sacramento: daytime highs average 13.3°C and nights cool to about 4.5°C. By daytime temperature it is the coolest month of the year.
Expect about 113 mm of rain on roughly 10 days, which makes December a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 32 min on an average December day.
The nearest other city in this atlas is Arden-Arcade (10 km away). In December its highs average 13.1°C, about as warm as Sacramento, with 113 mm of rain.
Among the 498 cities listed in the United States, Sacramento ranks joint 203rd of 498 for the warmest December highs and joint 438th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Sacramento is 2.7°C warmer than that mean.
From December to January, average highs rise by 0.2°C to 13.5°C, and monthly rainfall rises from 113 mm to 118 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sacramento climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.5°C4.3°C | 4.3°C | 118 | 9.8 | 9.810 h |
| February | 15.5°C5.5°C | 5.5°C | 111 | 9.4 | 10.711 h |
| March | 18.1°C7.2°C | 7.2°C | 92 | 9.1 | 11.912 h |
| April | 21.6°C9.1°C | 9.1°C | 42 | 5.4 | 13.213 h |
| May | 26.8°C12.4°C | 12.4°C | 23 | 3.7 | 14.214 h |
| June | 31.7°C15.3°C | 15.3°C | 4.7 | 1.0 | 14.815 h |
| July | 34.1°C16.5°C | 16.5°C | 0.4 | 0.1 | 14.615 h |
| August | 33.3°C16.3°C | 16.3°C | 1.3 | 0.1 | 13.714 h |
| September | 31.1°C15.4°C | 15.4°C | 2.3 | 0.5 | 12.512 h |
| October | 25.3°C12.2°C | 12.2°C | 31 | 3.1 | 11.211 h |
| November | 17.9°C7.5°C | 7.5°C | 59 | 6.5 | 10.110 h |
| December, selected | 13.3°C4.5°C | 4.5°C | 113 | 9.6 | 9.510 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Arden-Arcade in DecemberUnited States · 10 kmHigh 13.1°C · Low 4.4°C · 113 mm rain
- Rancho Cordova in DecemberUnited States · 17 kmHigh 13.1°C · Low 4.2°C · 121 mm rain
- Elk Grove in DecemberUnited States · 22 kmHigh 13.1°C · Low 4.5°C · 121 mm rain
- Citrus Heights in DecemberUnited States · 23 kmHigh 13.0°C · Low 3.9°C · 143 mm rain
- Roseville in DecemberUnited States · 26 kmHigh 13.0°C · Low 3.7°C · 143 mm rain
- Folsom in DecemberUnited States · 30 kmHigh 13.1°C · Low 3.8°C · 143 mm rain
- Vacaville in DecemberUnited States · 50 kmHigh 13.8°C · Low 5.8°C · 101 mm rain
- Fairfield in DecemberUnited States · 60 kmHigh 13.6°C · Low 5.8°C · 101 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sacramento) is explained once on the Sacramento year overview and on the Sources, method and limits page.
Arden-Arcade lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.