Morongo Valley Weather in December
Average highs run from 61°F on December 1 to 59°F on December 31, and lows from 42°F to 40°F. Normal precipitation for the month is 1.48 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
- 59°F
- Average low
- 40°F
- Precipitation
- 1.48 in
- Snowfall
- 0.9 in
- Record high
- 91°FDec 1, 2021
- Record low
- 32°FDec 23, 1998
- Chance of a freeze
- 72%
- Daylight
- 10 h 03 min to 9 h 55 min
- Cloud cover
- 39%
- Humidity
- 48%
- Dew point
- 24°F
- Wind
- 7.2 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 | 42°F | 91°F 2021 | 34°F 2006 | 11% | 0% |
| Dec 2 | 61°F | 42°F | 86°F 2021 | 40°F 2004 | 11% | 0% |
| Dec 3 | 60°F | 42°F | 84°F 2024 | 40°F 2007 | 12% | 0% |
| Dec 4 | 60°F | 41°F | 84°F 2021 | 39°F 2006 | 12% | 1% |
| Dec 5 | 60°F | 41°F | 87°F 2021 | 38°F 2006 | 12% | 1% |
| Dec 6 | 60°F | 41°F | 87°F 2024 | 33°F 2011 | 12% | 1% |
| Dec 7 | 59°F | 41°F | 85°F 2006 | 33°F 2011 | 12% | 1% |
| Dec 8 | 59°F | 41°F | 84°F 2025 | 36°F 2011 | 12% | 1% |
| Dec 9 | 59°F | 40°F | 84°F 2025 | 40°F 2011 | 13% | 1% |
| Dec 10 | 59°F | 40°F | 83°F 2017 | 33°F 2013 | 13% | 1% |
| Dec 11 | 59°F | 40°F | 85°F 2017 | 36°F 2013 | 13% | 1% |
| Dec 12 | 59°F | 40°F | 85°F 2010 | 39°F 1998 | 13% | 1% |
| Dec 13 | 59°F | 40°F | 83°F 2010 | 38°F 2001 | 13% | 1% |
| Dec 14 | 58°F | 40°F | 82°F 2017 | 38°F 2007 | 13% | 1% |
| Dec 15 | 58°F | 40°F | 89°F 2025 | 37°F 2011 | 13% | 1% |
| Dec 16 | 58°F | 40°F | 86°F 2025 | 37°F 2005 | 13% | 1% |
| Dec 17 | 58°F | 40°F | 86°F 1998 | 37°F 2001 | 13% | 1% |
| Dec 18 | 58°F | 40°F | 85°F 2024 | 38°F 2015 | 14% | 1% |
| Dec 19 | 58°F | 40°F | 85°F 2024 | 36°F 2008 | 14% | 1% |
| Dec 20 | 58°F | 40°F | 82°F 2024 | 33°F 2012 | 14% | 1% |
| Dec 21 | 58°F | 40°F | 81°F 2024 | 35°F 2012 | 14% | 1% |
| Dec 22 | 58°F | 40°F | 78°F 2014 | 34°F 1998 | 14% | 1% |
| Dec 23 | 58°F | 40°F | 84°F 2024 | 32°F 1998 | 14% | 1% |
| Dec 24 | 58°F | 40°F | 85°F 2005 | 35°F 1998 | 14% | 1% |
| Dec 25 | 58°F | 40°F | 82°F 2022 | 34°F 1998 | 14% | 1% |
| Dec 26 | 58°F | 40°F | 79°F 2013 | 35°F 2007 | 14% | 1% |
| Dec 27 | 58°F | 40°F | 79°F 2017 | 35°F 2008 | 14% | 1% |
| Dec 28 | 58°F | 40°F | 80°F 2017 | 33°F 2015 | 13% | 1% |
| Dec 29 | 59°F | 40°F | 82°F 2017 | 35°F 2014 | 13% | 1% |
| Dec 30 | 59°F | 40°F | 79°F 2017 | 36°F 2015 | 13% | 1% |
| Dec 31 | 59°F | 40°F | 77°F 2024 | 33°F 2010 | 13% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 6:34 AM, sunset 4:37 PM
- December 31
- sunrise 6:52 AM, sunset 4:47 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00045860 (Morongo Valley N), public domain. Records: NOAA GHCN-Daily, station USW00093138, 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.