Swannanoa Weather in December
Average highs run from 47°F on December 1 to 42°F on December 31, and lows from 30°F to 26°F. Normal precipitation for the month is 4.34 in over about 12 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
- 44°F
- Average low
- 28°F
- Precipitation
- 4.34 in
- Snowfall
- 5.2 in
- Record high
- 81°FDec 31, 1951
- Record low
- -7°FDec 25, 1983
- Chance of a freeze
- 100%
- Daylight
- 9 h 55 min to 9 h 48 min
- Cloud cover
- 60%
- Humidity
- 82%
- Dew point
- 32°F
- Wind
- 5.4 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 | 47°F | 30°F | 70°F 2001 | 9°F 1976 | 36% | 10% |
| Dec 2 | 46°F | 30°F | 71°F 1970 | 14°F 1947 | 36% | 10% |
| Dec 3 | 46°F | 30°F | 76°F 2021 | 10°F 1946 | 36% | 11% |
| Dec 4 | 46°F | 30°F | 70°F 2001 | 15°F 1946 | 36% | 11% |
| Dec 5 | 46°F | 30°F | 74°F 1947 | 14°F 1946 | 36% | 12% |
| Dec 6 | 46°F | 30°F | 73°F 1998 | 12°F 1984 | 36% | 12% |
| Dec 7 | 45°F | 30°F | 75°F 1998 | 5°F 1977 | 37% | 12% |
| Dec 8 | 45°F | 29°F | 73°F 1980 | 12°F 1977 | 37% | 13% |
| Dec 9 | 45°F | 29°F | 72°F 1946 | 13°F 2006 | 37% | 13% |
| Dec 10 | 45°F | 29°F | 74°F 2007 | 8°F 1995 | 37% | 13% |
| Dec 11 | 45°F | 29°F | 73°F 2007 | 13°F 1977 | 37% | 14% |
| Dec 12 | 44°F | 29°F | 74°F 1971 | 16°F 1950 | 37% | 14% |
| Dec 13 | 44°F | 29°F | 71°F 1948 | 13°F 2010 | 37% | 14% |
| Dec 14 | 44°F | 29°F | 73°F 1948 | 11°F 2010 | 38% | 15% |
| Dec 15 | 44°F | 28°F | 70°F 1984 | 10°F 1951 | 38% | 15% |
| Dec 16 | 44°F | 28°F | 71°F 1971 | 5°F 1951 | 38% | 15% |
| Dec 17 | 44°F | 28°F | 70°F 1984 | 7°F 1951 | 38% | 15% |
| Dec 18 | 43°F | 28°F | 71°F 1984 | 7°F 1953 | 38% | 16% |
| Dec 19 | 43°F | 28°F | 70°F 1984 | 6°F 1950 | 38% | 16% |
| Dec 20 | 43°F | 28°F | 67°F 1978 | 7°F 2004 | 38% | 16% |
| Dec 21 | 43°F | 28°F | 68°F 1970 | 7°F 1981 | 38% | 16% |
| Dec 22 | 43°F | 28°F | 71°F 1970 | 4°F 1989 | 38% | 17% |
| Dec 23 | 43°F | 27°F | 67°F 1979 | 1°F 1989 | 39% | 17% |
| Dec 24 | 43°F | 27°F | 68°F 1964 | -5°F 1983 | 39% | 17% |
| Dec 25 | 43°F | 27°F | 71°F 2021 | -7°F 1983 | 39% | 17% |
| Dec 26 | 42°F | 27°F | 78°F 1971 | 0°F 1983 | 39% | 18% |
| Dec 27 | 42°F | 27°F | 72°F 1971 | 9°F 1948 | 39% | 18% |
| Dec 28 | 42°F | 27°F | 71°F 1984 | 11°F 1951 | 39% | 18% |
| Dec 29 | 42°F | 27°F | 74°F 1984 | 10°F 1977 | 39% | 18% |
| Dec 30 | 42°F | 26°F | 73°F 1984 | 4°F 1983 | 39% | 18% |
| Dec 31 | 42°F | 26°F | 81°F 1951 | 6°F 1983 | 40% | 18% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:21 AM, sunset 5:16 PM
- December 31
- sunrise 7:39 AM, sunset 5:27 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00318448 (Swannanoa 2 Sse), public domain. Records: NOAA GHCN-Daily, station USW00003812, 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.