Three Rivers Weather in December
Average highs run from 40°F on December 1 to 38°F on December 31, and lows from 21°F to 19°F. Normal precipitation for the month is 3.16 in.
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
- 38°F
- Average low
- 19°F
- Precipitation
- 3.16 in
- Snowfall
- 20.7 in
- Record high
- 64°FDec 2, 2021
- Record low
- -27°FDec 8, 2013
- Chance of a freeze
- 100%
- Daylight
- 9 h 10 min to 8 h 58 min
- Cloud cover
- 72%
- Humidity
- 87%
- Dew point
- 25°F
- Wind
- 8.3 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 | 40°F | 21°F | 58°F 2008 | 5°F 2019 | 23% | |
| Dec 2 | 39°F | 21°F | 64°F 2021 | 6°F 2006 | 23% | |
| Dec 3 | 39°F | 21°F | 57°F 2021 | 8°F 2011 | 24% | |
| Dec 4 | 39°F | 20°F | 57°F 2021 | 0°F 2005 | 24% | |
| Dec 5 | 38°F | 20°F | 57°F 2021 | -9°F 2013 | 25% | |
| Dec 6 | 38°F | 20°F | 53°F 2023 | 0°F 2005 | 25% | |
| Dec 7 | 38°F | 20°F | 55°F 2008 | -4°F 2016 | 25% | |
| Dec 8 | 38°F | 20°F | 53°F 2015 | -27°F 2013 | 26% | |
| Dec 9 | 38°F | 19°F | 56°F 2020 | -17°F 2009 | 26% | |
| Dec 10 | 37°F | 19°F | 51°F 2012 | -11°F 2009 | 26% | |
| Dec 11 | 37°F | 19°F | 50°F 2011 | -2°F 2009 | 27% | |
| Dec 12 | 37°F | 19°F | 46°F 2010 | 5°F 2005 | 27% | |
| Dec 13 | 37°F | 19°F | 46°F 1998 | -4°F 2005 | 27% | |
| Dec 14 | 37°F | 19°F | 51°F 1998 | -10°F 2005 | 28% | |
| Dec 15 | 37°F | 19°F | 49°F 2006 | -12°F 2005 | 28% | |
| Dec 16 | 37°F | 19°F | 53°F 2013 | -6°F 2005 | 28% | |
| Dec 17 | 37°F | 19°F | 53°F 1998 | -14°F 2016 | 28% | |
| Dec 18 | 37°F | 18°F | 52°F 1998 | -12°F 2016 | 28% | |
| Dec 19 | 37°F | 18°F | 55°F 2017 | 6°F 1998 | 28% | |
| Dec 20 | 37°F | 18°F | 54°F 2009 | -4°F 1998 | 28% | |
| Dec 21 | 37°F | 18°F | 49°F 2020 | -14°F 1998 | 29% | |
| Dec 22 | 37°F | 18°F | 52°F 2020 | -7°F 1998 | 29% | |
| Dec 23 | 37°F | 18°F | 50°F 2013 | -7°F 1998 | 29% | |
| Dec 24 | 37°F | 18°F | 48°F 2011 | -6°F 2008 | 29% | |
| Dec 25 | 37°F | 18°F | 50°F 2005 | -1°F 2015 | 29% | |
| Dec 26 | 37°F | 18°F | 48°F 2004 | -7°F 2015 | 29% | |
| Dec 27 | 37°F | 18°F | 57°F 2013 | -7°F 2015 | 29% | |
| Dec 28 | 38°F | 18°F | 57°F 2013 | 3°F 2008 | 29% | |
| Dec 29 | 38°F | 19°F | 46°F 2011 | 3°F 2008 | 29% | |
| Dec 30 | 38°F | 19°F | 53°F 2017 | 0°F 2021 | 29% | |
| Dec 31 | 38°F | 19°F | 53°F 1998 | -9°F 2010 | 29% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:20 AM, sunset 4:30 PM
- December 31
- sunrise 7:40 AM, sunset 4:38 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00358246 (Sunriver), public domain. Records: NOAA GHCN-Daily, station USC00358246, 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.