Opportunity Weather in December
Average highs run from 39°F on December 1 to 36°F on December 31, and lows from 28°F to 25°F. Normal precipitation for the month is 2.18 in over about 15 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
- 37°F
- Average low
- 26°F
- Precipitation
- 2.18 in
- Snowfall
- 13.8 in
- Record high
- 63°FDec 10, 2014
- Record low
- -10°FDec 23, 2008
- Chance of a freeze
- 100%
- Daylight
- 8 h 42 min to 8 h 30 min
- Cloud cover
- 75%
- Humidity
- 93%
- Dew point
- 23°F
- Wind
- 5.8 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 | 39°F | 28°F | 62°F 2021 | 17°F 2014 | 46% | 23% |
| Dec 2 | 39°F | 27°F | 55°F 2021 | 13°F 2022 | 46% | 24% |
| Dec 3 | 39°F | 27°F | 52°F 2007 | 13°F 2022 | 46% | 24% |
| Dec 4 | 38°F | 27°F | 57°F 2007 | 11°F 2022 | 46% | 25% |
| Dec 5 | 38°F | 27°F | 56°F 2023 | 9°F 2013 | 46% | 25% |
| Dec 6 | 38°F | 27°F | 50°F 2023 | 7°F 2005 | 46% | 26% |
| Dec 7 | 38°F | 27°F | 48°F 2019 | 3°F 2013 | 46% | 26% |
| Dec 8 | 38°F | 26°F | 58°F 2015 | 2°F 2009 | 46% | 27% |
| Dec 9 | 37°F | 26°F | 56°F 2015 | 10°F 2009 | 46% | 28% |
| Dec 10 | 37°F | 26°F | 63°F 2014 | 8°F 2009 | 46% | 28% |
| Dec 11 | 37°F | 26°F | 61°F 2014 | 10°F 2000 | 46% | 29% |
| Dec 12 | 37°F | 26°F | 53°F 2014 | 7°F 2000 | 47% | 29% |
| Dec 13 | 37°F | 26°F | 56°F 2025 | 8°F 2016 | 47% | 30% |
| Dec 14 | 37°F | 26°F | 59°F 2002 | 4°F 2016 | 47% | 30% |
| Dec 15 | 37°F | 25°F | 58°F 2025 | 5°F 2008 | 47% | 31% |
| Dec 16 | 36°F | 25°F | 52°F 2025 | 2°F 2008 | 47% | 31% |
| Dec 17 | 36°F | 25°F | 52°F 2025 | -1°F 2016 | 47% | 31% |
| Dec 18 | 36°F | 25°F | 52°F 2024 | 5°F 2005 | 47% | 32% |
| Dec 19 | 36°F | 25°F | 49°F 2025 | 6°F 1998 | 47% | 32% |
| Dec 20 | 36°F | 25°F | 55°F 2019 | -3°F 2008 | 47% | 32% |
| Dec 21 | 36°F | 25°F | 57°F 2019 | -1°F 1998 | 48% | 32% |
| Dec 22 | 36°F | 25°F | 50°F 2019 | -7°F 2022 | 48% | 33% |
| Dec 23 | 36°F | 25°F | 47°F 2024 | -10°F 2008 | 48% | 33% |
| Dec 24 | 36°F | 25°F | 50°F 2005 | 9°F 2017 | 48% | 33% |
| Dec 25 | 36°F | 25°F | 51°F 2005 | 14°F 2008 | 48% | 33% |
| Dec 26 | 36°F | 25°F | 47°F 2024 | 12°F 2017 | 48% | 33% |
| Dec 27 | 36°F | 25°F | 60°F 2008 | 13°F 2021 | 48% | 34% |
| Dec 28 | 36°F | 25°F | 60°F 2008 | 7°F 2021 | 48% | 34% |
| Dec 29 | 36°F | 25°F | 51°F 2011 | 9°F 2021 | 48% | 34% |
| Dec 30 | 36°F | 25°F | 46°F 1998 | 6°F 2010 | 48% | 34% |
| Dec 31 | 36°F | 25°F | 47°F 2005 | 1°F 2010 | 48% | 34% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:17 AM, sunset 3:59 PM
- December 31
- sunrise 7:37 AM, sunset 4:07 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094176 (Spokane Felts Fld), public domain. Records: NOAA GHCN-Daily, station USW00094176, 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.