Spring Valley Weather in December
Average highs run from 61°F on December 1 to 58°F on December 31, and lows from 35°F to 33°F. Normal precipitation for the month is 1.53 in over about 4 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 58°F
- Average low
- 33°F
- Precipitation
- 1.53 in
- Snowfall
- 0.3 in
- Record high
- 74°FDec 4, 1977
- Record low
- -9°FDec 23, 1990
- Chance of a freeze
- 100%
- Daylight
- 10 h 02 min to 9 h 54 min
- Cloud cover
- 45%
- Humidity
- 55%
- Dew point
- 23°F
- Wind
- 7.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 61°F | 35°F | 71°F 1995 | 9°F 1991 | 11% | 0% |
| Dec 2 | 60°F | 35°F | 69°F 1958 | 4°F 1991 | 11% | 0% |
| Dec 3 | 60°F | 34°F | 70°F 1958 | 11°F 1991 | 11% | 0% |
| Dec 4 | 60°F | 34°F | 74°F 1977 | 12°F 2009 | 12% | 0% |
| Dec 5 | 60°F | 34°F | 71°F 1989 | 11°F 1948 | 12% | 0% |
| Dec 6 | 59°F | 34°F | 68°F 1958 | 3°F 1978 | 12% | 0% |
| Dec 7 | 59°F | 34°F | 69°F 1958 | -4°F 1978 | 12% | 0% |
| Dec 8 | 59°F | 34°F | 69°F 1958 | -4°F 1978 | 12% | 0% |
| Dec 9 | 58°F | 33°F | 72°F 1950 | 2°F 1978 | 12% | 0% |
| Dec 10 | 58°F | 33°F | 71°F 1950 | 10°F 1971 | 13% | 0% |
| Dec 11 | 58°F | 33°F | 73°F 1950 | 2°F 1949 | 13% | 0% |
| Dec 12 | 58°F | 33°F | 72°F 1950 | 0°F 1949 | 13% | 0% |
| Dec 13 | 58°F | 33°F | 72°F 2010 | 6°F 1949 | 13% | 0% |
| Dec 14 | 58°F | 33°F | 68°F 2010 | 10°F 1949 | 13% | 1% |
| Dec 15 | 57°F | 33°F | 66°F 2006 | 6°F 1975 | 14% | 1% |
| Dec 16 | 57°F | 33°F | 70°F 1980 | 4°F 1967 | 14% | 1% |
| Dec 17 | 57°F | 33°F | 70°F 2025 | 12°F 1967 | 14% | 1% |
| Dec 18 | 57°F | 33°F | 68°F 2025 | 6°F 1967 | 14% | 1% |
| Dec 19 | 57°F | 33°F | 71°F 2025 | 10°F 1996 | 14% | 1% |
| Dec 20 | 57°F | 33°F | 67°F 1955 | 7°F 1967 | 15% | 1% |
| Dec 21 | 57°F | 33°F | 70°F 1969 | -3°F 1967 | 15% | 1% |
| Dec 22 | 57°F | 33°F | 70°F 2025 | -3°F 1990 | 15% | 1% |
| Dec 23 | 57°F | 33°F | 66°F 2005 | -9°F 1990 | 15% | 1% |
| Dec 24 | 57°F | 33°F | 66°F 2005 | 0°F 1990 | 15% | 1% |
| Dec 25 | 57°F | 33°F | 65°F 1980 | 0°F 1990 | 15% | 1% |
| Dec 26 | 57°F | 33°F | 68°F 1980 | 6°F 1990 | 15% | 1% |
| Dec 27 | 57°F | 33°F | 70°F 1980 | 8°F 1988 | 15% | 1% |
| Dec 28 | 57°F | 33°F | 70°F 2017 | 8°F 1966 | 15% | 1% |
| Dec 29 | 57°F | 33°F | 71°F 2017 | 7°F 1988 | 15% | 0% |
| Dec 30 | 58°F | 33°F | 70°F 2017 | 9°F 1990 | 15% | 0% |
| Dec 31 | 58°F | 33°F | 67°F 1963 | 4°F 1966 | 16% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:17 AM, sunset 5:19 PM
- December 31
- sunrise 7:35 AM, sunset 5:29 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00022109 (Cordes), public domain. Records: NOAA GHCN-Daily, station USW00023184, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.