Johnstonville Weather in December
Average highs run from 45°F on December 1 to 42°F on December 31, and lows from 25°F to 21°F. Normal precipitation for the month is 1.90 in over about 6 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
- 43°F
- Average low
- 22°F
- Precipitation
- 1.90 in
- Record high
- 65°FDec 1, 1929
- Record low
- -22°FDec 9, 1972
- Chance of a freeze
- 100%
- Daylight
- 9 h 30 min to 9 h 21 min
- Cloud cover
- 62%
- Humidity
- 83%
- Dew point
- 23°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 | 45°F | 25°F | 65°F 1929 | 7°F 1905 | 18% |
| Dec 2 | 45°F | 24°F | 60°F 1927 | 7°F 2022 | 18% |
| Dec 3 | 45°F | 24°F | 63°F 1977 | 8°F 1952 | 18% |
| Dec 4 | 44°F | 24°F | 63°F 1979 | 1°F 1948 | 18% |
| Dec 5 | 44°F | 24°F | 63°F 1958 | 1°F 1972 | 18% |
| Dec 6 | 44°F | 24°F | 64°F 2021 | 4°F 1909 | 18% |
| Dec 7 | 44°F | 23°F | 62°F 1958 | -8°F 1956 | 18% |
| Dec 8 | 43°F | 23°F | 60°F 1937 | -10°F 1956 | 18% |
| Dec 9 | 43°F | 23°F | 60°F 1979 | -22°F 1972 | 19% |
| Dec 10 | 43°F | 23°F | 61°F 1981 | -13°F 1972 | 19% |
| Dec 11 | 43°F | 23°F | 61°F 2025 | -18°F 1972 | 19% |
| Dec 12 | 43°F | 23°F | 65°F 1917 | -9°F 1932 | 19% |
| Dec 13 | 42°F | 22°F | 59°F 1969 | -6°F 1932 | 19% |
| Dec 14 | 42°F | 22°F | 57°F 1969 | -2°F 1932 | 19% |
| Dec 15 | 42°F | 22°F | 58°F 1939 | -5°F 1948 | 19% |
| Dec 16 | 42°F | 22°F | 58°F 1939 | 2°F 1959 | 19% |
| Dec 17 | 42°F | 22°F | 57°F 2018 | -1°F 2008 | 18% |
| Dec 18 | 42°F | 22°F | 62°F 1917 | -1°F 1908 | 18% |
| Dec 19 | 42°F | 22°F | 61°F 1917 | 0°F 1908 | 18% |
| Dec 20 | 42°F | 22°F | 57°F 1961 | -5°F 1949 | 18% |
| Dec 21 | 42°F | 22°F | 61°F 1915 | -4°F 1914 | 18% |
| Dec 22 | 42°F | 21°F | 60°F 2014 | -1°F 1914 | 18% |
| Dec 23 | 42°F | 21°F | 60°F 2014 | -3°F 1948 | 18% |
| Dec 24 | 42°F | 21°F | 58°F 1902 | -7°F 1948 | 18% |
| Dec 25 | 42°F | 21°F | 60°F 1902 | 1°F 1992 | 18% |
| Dec 26 | 42°F | 21°F | 63°F 1917 | -2°F 1914 | 18% |
| Dec 27 | 42°F | 21°F | 59°F 1917 | -8°F 1988 | 18% |
| Dec 28 | 42°F | 21°F | 61°F 1917 | 4°F 1914 | 18% |
| Dec 29 | 42°F | 21°F | 60°F 1933 | -5°F 1974 | 18% |
| Dec 30 | 42°F | 21°F | 61°F 2023 | -5°F 1911 | 18% |
| Dec 31 | 42°F | 21°F | 63°F 2017 | -3°F 1951 | 18% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:06 AM, sunset 4:36 PM
- December 31
- sunrise 7:25 AM, sunset 4:46 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00048702 (Susanville 2SW), public domain. Records: NOAA GHCN-Daily, station USC00048702, 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.