Lewiston Weather in December
Average highs run from 51°F on December 1 to 48°F on December 31, and lows from 34°F to 32°F. Normal precipitation for the month is 6.45 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
- 48°F
- Average low
- 32°F
- Precipitation
- 6.45 in
- Snowfall
- 2.7 in
- Record high
- 85°FDec 1, 1910
- Record low
- -10°FDec 9, 1972
- Chance of a freeze
- 99%
- Daylight
- 9 h 28 min to 9 h 19 min
- Cloud cover
- 61%
- Humidity
- 87%
- Dew point
- 32°F
- Wind
- 3.8 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 | 51°F | 34°F | 85°F 1910 | 8°F 1936 | 44% | 3% |
| Dec 2 | 51°F | 34°F | 67°F 1929 | 14°F 1936 | 44% | 3% |
| Dec 3 | 50°F | 33°F | 66°F 1921 | 6°F 1936 | 45% | 3% |
| Dec 4 | 50°F | 33°F | 73°F 1927 | 3°F 1936 | 45% | 3% |
| Dec 5 | 50°F | 33°F | 68°F 1929 | 9°F 2013 | 45% | 3% |
| Dec 6 | 50°F | 33°F | 73°F 1934 | 13°F 1959 | 45% | 3% |
| Dec 7 | 49°F | 33°F | 69°F 1929 | 9°F 1978 | 46% | 4% |
| Dec 8 | 49°F | 33°F | 65°F 1934 | -7°F 1972 | 46% | 4% |
| Dec 9 | 49°F | 33°F | 66°F 1934 | -10°F 1972 | 46% | 4% |
| Dec 10 | 49°F | 32°F | 65°F 1973 | -7°F 1972 | 46% | 4% |
| Dec 11 | 48°F | 32°F | 68°F 1976 | -4°F 1972 | 46% | 4% |
| Dec 12 | 48°F | 32°F | 60°F 1921 | 5°F 1972 | 47% | 4% |
| Dec 13 | 48°F | 32°F | 61°F 1921 | 0°F 1919 | 47% | 4% |
| Dec 14 | 48°F | 32°F | 59°F 1947 | 2°F 1919 | 47% | 4% |
| Dec 15 | 48°F | 32°F | 69°F 1962 | 6°F 1932 | 47% | 4% |
| Dec 16 | 48°F | 32°F | 60°F 1983 | 9°F 1919 | 47% | 4% |
| Dec 17 | 48°F | 32°F | 65°F 1980 | 11°F 1965 | 47% | 4% |
| Dec 18 | 47°F | 32°F | 69°F 1935 | 10°F 1924 | 47% | 4% |
| Dec 19 | 47°F | 32°F | 62°F 1980 | 9°F 1924 | 47% | 4% |
| Dec 20 | 47°F | 32°F | 60°F 1935 | 6°F 1990 | 47% | 4% |
| Dec 21 | 47°F | 32°F | 63°F 2013 | 0°F 1998 | 47% | 4% |
| Dec 22 | 47°F | 32°F | 64°F 2014 | 4°F 1998 | 47% | 4% |
| Dec 23 | 47°F | 32°F | 60°F 1964 | 6°F 1948 | 47% | 4% |
| Dec 24 | 47°F | 32°F | 61°F 2005 | -2°F 1990 | 47% | 4% |
| Dec 25 | 47°F | 32°F | 59°F 1922 | -3°F 1924 | 47% | 4% |
| Dec 26 | 47°F | 32°F | 66°F 1999 | -3°F 1924 | 47% | 4% |
| Dec 27 | 47°F | 32°F | 61°F 1993 | 9°F 1954 | 47% | 4% |
| Dec 28 | 47°F | 32°F | 58°F 1919 | 10°F 1930 | 48% | 4% |
| Dec 29 | 47°F | 32°F | 60°F 2013 | 10°F 1930 | 48% | 4% |
| Dec 30 | 48°F | 32°F | 61°F 1945 | 11°F 1915 | 48% | 4% |
| Dec 31 | 48°F | 32°F | 71°F 1991 | 7°F 1990 | 48% | 4% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:16 AM, sunset 4:44 PM
- December 31
- sunrise 7:35 AM, sunset 4:54 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00049026 (Trinity Rvr Hatchery), public domain. Records: NOAA GHCN-Daily, station USC00049490, 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.