Lebanon Weather in December
Average highs run from 49°F on December 1 to 47°F on December 31, and lows from 37°F to 36°F.
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
- 47°F
- Average low
- 36°F
- Record high
- 66°FDec 23, 1950
- Record low
- -8°FDec 25, 1924
- Chance of a freeze
- 92%
- Daylight
- 9 h 05 min to 8 h 53 min
- Cloud cover
- 75%
- Humidity
- 93%
- Dew point
- 38°F
- Wind
- 6.0 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 49°F | 37°F | 65°F 1939 | 20°F 1956 | |
| Dec 2 | 49°F | 37°F | 65°F 2021 | 18°F 1985 | |
| Dec 3 | 49°F | 37°F | 63°F 1958 | 24°F 1976 | |
| Dec 4 | 49°F | 37°F | 63°F 1939 | 23°F 2009 | |
| Dec 5 | 48°F | 37°F | 63°F 2023 | 18°F 2013 | |
| Dec 6 | 48°F | 37°F | 61°F 2023 | 20°F 1972 | |
| Dec 7 | 48°F | 37°F | 63°F 1938 | 12°F 1972 | |
| Dec 8 | 48°F | 36°F | 62°F 1915 | 2°F 2013 | |
| Dec 9 | 48°F | 36°F | 62°F 1895 | -6°F 1972 | |
| Dec 10 | 47°F | 36°F | 64°F 1993 | -2°F 1972 | |
| Dec 11 | 47°F | 36°F | 63°F 2014 | -4°F 1972 | |
| Dec 12 | 47°F | 36°F | 62°F 1921 | 8°F 1972 | |
| Dec 13 | 47°F | 36°F | 61°F 1960 | 0°F 1972 | |
| Dec 14 | 47°F | 36°F | 61°F 1977 | 10°F 1972 | |
| Dec 15 | 47°F | 36°F | 59°F 2002 | 13°F 1932 | |
| Dec 16 | 47°F | 36°F | 58°F 1950 | 15°F 2016 | |
| Dec 17 | 47°F | 36°F | 59°F 1974 | 10°F 1964 | |
| Dec 18 | 47°F | 36°F | 63°F 1979 | 5°F 1924 | |
| Dec 19 | 47°F | 36°F | 61°F 1896 | 6°F 1924 | |
| Dec 20 | 47°F | 36°F | 60°F 1900 | 11°F 1990 | |
| Dec 21 | 47°F | 36°F | 63°F 1994 | 8°F 1990 | |
| Dec 22 | 47°F | 36°F | 61°F 1955 | 5°F 1924 | |
| Dec 23 | 47°F | 36°F | 66°F 1950 | 11°F 1983 | |
| Dec 24 | 47°F | 36°F | 61°F 1950 | 2°F 1924 | |
| Dec 25 | 47°F | 36°F | 60°F 2005 | -8°F 1924 | |
| Dec 26 | 47°F | 36°F | 61°F 1980 | 19°F 1948 | |
| Dec 27 | 47°F | 36°F | 60°F 1917 | 8°F 1924 | |
| Dec 28 | 47°F | 36°F | 63°F 1917 | 20°F 1978 | |
| Dec 29 | 47°F | 36°F | 66°F 1917 | 14°F 1990 | |
| Dec 30 | 47°F | 36°F | 63°F 1917 | 11°F 1968 | |
| Dec 31 | 47°F | 36°F | 66°F 1980 | 10°F 1968 |
Chance of rain
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:28 AM, sunset 4:33 PM
- December 31
- sunrise 7:48 AM, sunset 4:41 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00354819 (Lebanon), public domain. Records: NOAA GHCN-Daily, station USC00351862, 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.