Diamond Weather in December
Average highs run from 43°F on December 1 to 33°F on December 31, and lows from 27°F to 19°F. Normal precipitation for the month is 1.96 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
- 37°F
- Average low
- 23°F
- Precipitation
- 1.96 in
- Snowfall
- 6.1 in
- Record high
- 72°FDec 4, 2012
- Record low
- -26°FDec 28, 1924
- Chance of a freeze
- 100%
- Daylight
- 9 h 26 min to 9 h 15 min
- Cloud cover
- 68%
- Humidity
- 86%
- Dew point
- 23°F
- Wind
- 11.2 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 | 43°F | 27°F | 67°F 1970 | 9°F 1937 | 36% | 5% |
| Dec 2 | 43°F | 27°F | 66°F 1962 | -2°F 1942 | 36% | 5% |
| Dec 3 | 42°F | 27°F | 69°F 1970 | -8°F 1940 | 36% | 6% |
| Dec 4 | 42°F | 26°F | 72°F 2012 | 4°F 2025 | 36% | 6% |
| Dec 5 | 41°F | 26°F | 67°F 1998 | 1°F 2025 | 36% | 6% |
| Dec 6 | 41°F | 26°F | 68°F 2001 | -2°F 1964 | 36% | 6% |
| Dec 7 | 40°F | 25°F | 67°F 1916 | -5°F 2005 | 36% | 7% |
| Dec 8 | 40°F | 25°F | 64°F 1946 | -3°F 2005 | 36% | 7% |
| Dec 9 | 40°F | 25°F | 62°F 1946 | -18°F 1958 | 36% | 7% |
| Dec 10 | 39°F | 24°F | 59°F 1946 | -18°F 1958 | 37% | 7% |
| Dec 11 | 39°F | 24°F | 63°F 1949 | -12°F 1917 | 37% | 7% |
| Dec 12 | 38°F | 24°F | 60°F 1949 | -9°F 1958 | 37% | 8% |
| Dec 13 | 38°F | 23°F | 62°F 2015 | -15°F 1958 | 37% | 8% |
| Dec 14 | 38°F | 23°F | 62°F 2015 | -10°F 1958 | 37% | 8% |
| Dec 15 | 37°F | 23°F | 59°F 1928 | -19°F 1917 | 37% | 8% |
| Dec 16 | 37°F | 23°F | 65°F 2021 | -20°F 1932 | 37% | 9% |
| Dec 17 | 37°F | 22°F | 57°F 1939 | -12°F 1951 | 37% | 9% |
| Dec 18 | 36°F | 22°F | 60°F 1939 | -9°F 1945 | 37% | 9% |
| Dec 19 | 36°F | 22°F | 58°F 1957 | -10°F 1963 | 37% | 9% |
| Dec 20 | 36°F | 21°F | 61°F 1949 | -13°F 1963 | 37% | 9% |
| Dec 21 | 35°F | 21°F | 61°F 1967 | -17°F 1963 | 37% | 9% |
| Dec 22 | 35°F | 21°F | 58°F 1957 | -16°F 1916 | 37% | 9% |
| Dec 23 | 35°F | 21°F | 60°F 1933 | -22°F 1960 | 37% | 9% |
| Dec 24 | 34°F | 21°F | 59°F 2015 | -12°F 1951 | 37% | 10% |
| Dec 25 | 34°F | 20°F | 58°F 1936 | -17°F 1924 | 37% | 10% |
| Dec 26 | 34°F | 20°F | 61°F 2019 | -21°F 1914 | 37% | 10% |
| Dec 27 | 34°F | 20°F | 63°F 2019 | -16°F 1933 | 37% | 10% |
| Dec 28 | 33°F | 20°F | 61°F 2008 | -26°F 1924 | 37% | 10% |
| Dec 29 | 33°F | 19°F | 61°F 2025 | -9°F 1917 | 37% | 10% |
| Dec 30 | 33°F | 19°F | 61°F 2022 | -11°F 1963 | 37% | 10% |
| Dec 31 | 33°F | 19°F | 61°F 2002 | -15°F 1963 | 37% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 6:59 AM, sunset 4:25 PM
- December 31
- sunrise 7:19 AM, sunset 4:34 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00111420 (Channahon Dresden Isl Dam), public domain. Records: NOAA GHCN-Daily, station USC00115825, 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.