Dillon Weather in December
Average highs run from 62°F on December 1 to 57°F on December 31, and lows from 37°F to 33°F. Normal precipitation for the month is 3.13 in over about 8 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
- 59°F
- Average low
- 35°F
- Precipitation
- 3.13 in
- Snowfall
- 0.1 in
- Record high
- 83°FDec 9, 1943
- Record low
- 0°FDec 25, 1989
- Chance of a freeze
- 99%
- Daylight
- 10 h 01 min to 9 h 53 min
- Cloud cover
- 55%
- Humidity
- 81%
- Dew point
- 39°F
- Wind
- 8.5 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 | 62°F | 37°F | 80°F 1982 | 13°F 1929 | 23% | 0% |
| Dec 2 | 62°F | 36°F | 80°F 1982 | 18°F 1960 | 23% | 0% |
| Dec 3 | 62°F | 36°F | 79°F 1955 | 18°F 1960 | 23% | 0% |
| Dec 4 | 62°F | 36°F | 78°F 1982 | 16°F 1979 | 23% | 0% |
| Dec 5 | 61°F | 36°F | 78°F 1973 | 18°F 1969 | 23% | 0% |
| Dec 6 | 61°F | 36°F | 78°F 1948 | 18°F 1974 | 24% | 0% |
| Dec 7 | 61°F | 36°F | 79°F 2013 | 18°F 1954 | 24% | 0% |
| Dec 8 | 61°F | 36°F | 79°F 1951 | 15°F 1954 | 24% | 0% |
| Dec 9 | 60°F | 36°F | 83°F 1943 | 18°F 1968 | 24% | 0% |
| Dec 10 | 60°F | 35°F | 79°F 1943 | 17°F 1927 | 25% | 0% |
| Dec 11 | 60°F | 35°F | 80°F 2007 | 15°F 1977 | 25% | 0% |
| Dec 12 | 60°F | 35°F | 81°F 1931 | 15°F 1957 | 25% | 0% |
| Dec 13 | 59°F | 35°F | 82°F 1927 | 6°F 1962 | 25% | 0% |
| Dec 14 | 59°F | 35°F | 79°F 1927 | 13°F 1960 | 25% | 0% |
| Dec 15 | 59°F | 35°F | 79°F 1971 | 13°F 1962 | 25% | 1% |
| Dec 16 | 59°F | 35°F | 80°F 1956 | 8°F 1943 | 25% | 1% |
| Dec 17 | 59°F | 34°F | 79°F 1956 | 9°F 1943 | 25% | 1% |
| Dec 18 | 58°F | 34°F | 78°F 1967 | 16°F 1972 | 25% | 1% |
| Dec 19 | 58°F | 34°F | 79°F 1967 | 13°F 1975 | 26% | 1% |
| Dec 20 | 58°F | 34°F | 83°F 1931 | 14°F 1981 | 26% | 1% |
| Dec 21 | 58°F | 34°F | 75°F 1967 | 14°F 1942 | 26% | 1% |
| Dec 22 | 58°F | 34°F | 79°F 1967 | 15°F 1976 | 26% | 1% |
| Dec 23 | 58°F | 34°F | 81°F 2013 | 19°F 1960 | 26% | 1% |
| Dec 24 | 57°F | 34°F | 80°F 1931 | 15°F 1989 | 26% | 1% |
| Dec 25 | 57°F | 34°F | 80°F 1932 | 0°F 1989 | 26% | 1% |
| Dec 26 | 57°F | 33°F | 79°F 2015 | 8°F 1983 | 26% | 1% |
| Dec 27 | 57°F | 33°F | 77°F 1949 | 16°F 1948 | 26% | 1% |
| Dec 28 | 57°F | 33°F | 80°F 1988 | 18°F 1927 | 26% | 1% |
| Dec 29 | 57°F | 33°F | 78°F 1984 | 18°F 1961 | 27% | 1% |
| Dec 30 | 57°F | 33°F | 81°F 2015 | 18°F 1961 | 27% | 1% |
| Dec 31 | 57°F | 33°F | 80°F 2015 | 16°F 1983 | 27% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:06 AM, sunset 5:07 PM
- December 31
- sunrise 7:24 AM, sunset 5:17 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00382386 (Dillon), public domain. Records: NOAA GHCN-Daily, station USC00385509, 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.