Climate averages 1991–2020
Spring Valley weather
in December.
A cool, fairly dry month: the coolest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Spring Valley: daytime highs average 12.4°C and nights cool to about 2.8°C. By daytime temperature it is the coolest month of the year.
Expect about 20 mm of rain on roughly 3 days, which makes December a fairly dry month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 45 min on an average December day.
The nearest other city in this atlas is Paradise (9 km away). In December its highs average 13.2°C, 0.8°C warmer than Spring Valley, with 20 mm of rain.
Among the 498 cities listed in the United States, Spring Valley ranks joint 229th of 498 for the warmest December highs and joint 16th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Spring Valley is 1.8°C warmer than that mean.
From December to January, average highs rise by 0.8°C to 13.2°C, and monthly rainfall rises from 20 mm to 21 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
Spring Valley climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.2°C3.1°C | 3.1°C | 21 | 3.6 | 10.010 h |
| February | 15.4°C4.4°C | 4.4°C | 28 | 4.3 | 10.811 h |
| March | 20.0°C7.6°C | 7.6°C | 17 | 3.2 | 11.912 h |
| April | 24.4°C11.0°C | 11.0°C | 6.9 | 2.0 | 13.113 h |
| May | 29.6°C15.7°C | 15.7°C | 4.2 | 1.2 | 14.114 h |
| June | 35.5°C20.7°C | 20.7°C | 1.6 | 0.4 | 14.615 h |
| July | 38.3°C24.9°C | 24.9°C | 8.4 | 2.7 | 14.414 h |
| August | 37.3°C24.3°C | 24.3°C | 12 | 2.7 | 13.514 h |
| September | 33.0°C20.0°C | 20.0°C | 7.8 | 1.3 | 12.412 h |
| October | 25.6°C13.5°C | 13.5°C | 8.4 | 1.6 | 11.311 h |
| November | 17.9°C7.3°C | 7.3°C | 10 | 1.5 | 10.310 h |
| December, selected | 12.4°C2.8°C | 2.8°C | 20 | 2.8 | 9.810 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
- Paradise in DecemberUnited States · 9 kmHigh 13.2°C · Low 4.1°C · 20 mm rain
- Enterprise in DecemberUnited States · 9 kmHigh 12.2°C · Low 3.3°C · 20 mm rain
- Las Vegas in DecemberUnited States · 12 kmHigh 12.8°C · Low 3.4°C · 21 mm rain
- Henderson in DecemberUnited States · 25 kmHigh 13.7°C · Low 5.2°C · 17 mm rain
- Saint George in DecemberUnited States · 185 kmHigh 9.9°C · Low 0.2°C · 28 mm rain
- Apple Valley in DecemberUnited States · 251 kmHigh 12.6°C · Low 3.4°C · 33 mm rain
- Victorville in DecemberUnited States · 255 kmHigh 13.2°C · Low 3.6°C · 33 mm rain
- Hesperia in DecemberUnited States · 264 kmHigh 12.8°C · Low 2.8°C · 33 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 Spring Valley) is explained once on the Spring Valley year overview and on the Sources, method and limits page.
Paradise and Enterprise lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.