Climate averages 1991–2020
Reno weather
in December.
A cold, moderately 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 cold month in Reno: daytime highs average 4.7°C and nights cool to about -3.5°C. By daytime temperature it is the coolest month of the year.
Expect about 64 mm of rain on roughly 8 days, which makes December a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 26 min on an average December day.
The nearest other city in this atlas is Folsom (151 km away). In December its highs average 13.1°C, 8.4°C warmer than Reno, with 143 mm of rain.
Among the 498 cities listed in the United States, Reno ranks joint 369th of 498 for the warmest December highs and joint 238th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Reno is 5.9°C cooler than that mean.
From December to January, average highs rise by 0.2°C to 4.9°C, and monthly rainfall rises from 64 mm to 67 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
Reno climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.9°C-2.8°C | -2.8°C | 67 | 8.0 | 9.710 h |
| February | 6.4°C-1.9°C | -1.9°C | 60 | 8.5 | 10.711 h |
| March | 10.0°C0.2°C | 0.2°C | 56 | 8.0 | 11.912 h |
| April | 14.4°C3.0°C | 3.0°C | 32 | 6.9 | 13.213 h |
| May | 20.6°C7.9°C | 7.9°C | 31 | 6.8 | 14.314 h |
| June | 26.9°C12.7°C | 12.7°C | 15 | 3.5 | 14.915 h |
| July | 32.2°C17.0°C | 17.0°C | 8.9 | 2.7 | 14.715 h |
| August | 31.2°C17.2°C | 17.2°C | 7.7 | 2.6 | 13.714 h |
| September | 26.5°C14.4°C | 14.4°C | 9.4 | 2.5 | 12.512 h |
| October | 18.8°C8.1°C | 8.1°C | 24 | 3.5 | 11.211 h |
| November | 10.7°C1.6°C | 1.6°C | 34 | 5.7 | 10.010 h |
| December, selected | 4.7°C-3.5°C | -3.5°C | 64 | 7.6 | 9.49 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
- Folsom in DecemberUnited States · 151 kmHigh 13.1°C · Low 3.8°C · 143 mm rain
- Roseville in DecemberUnited States · 154 kmHigh 13.0°C · Low 3.7°C · 143 mm rain
- Citrus Heights in DecemberUnited States · 156 kmHigh 13.0°C · Low 3.9°C · 143 mm rain
- Rancho Cordova in DecemberUnited States · 166 kmHigh 13.1°C · Low 4.2°C · 121 mm rain
- Arden-Arcade in DecemberUnited States · 170 kmHigh 13.1°C · Low 4.4°C · 113 mm rain
- Chico in DecemberUnited States · 175 kmHigh 13.2°C · Low 3.9°C · 202 mm rain
- Sacramento in DecemberUnited States · 179 kmHigh 13.3°C · Low 4.5°C · 113 mm rain
- Elk Grove in DecemberUnited States · 183 kmHigh 13.1°C · Low 4.5°C · 121 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 Reno) is explained once on the Reno year overview and on the Sources, method and limits page.