Heron Lake Weather in December
Average highs run from 34°F on December 1 to 23°F on December 31, and lows from 16°F to 7°F. Normal precipitation for the month is 0.79 in over about 7 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
- 28°F
- Average low
- 11°F
- Precipitation
- 0.79 in
- Snowfall
- 10.2 in
- Record high
- 67°FDec 9, 1939
- Record low
- -30°FDec 26, 1914
- Chance of a freeze
- 100%
- Daylight
- 9 h 10 min to 8 h 59 min
- Cloud cover
- 64%
- Humidity
- 86%
- Dew point
- 16°F
- Wind
- 12.5 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 | 34°F | 16°F | 64°F 1998 | -5°F 1944 | 22% | 19% |
| Dec 2 | 33°F | 16°F | 62°F 1998 | -8°F 1985 | 22% | 19% |
| Dec 3 | 33°F | 15°F | 62°F 1998 | -20°F 1940 | 22% | 20% |
| Dec 4 | 32°F | 15°F | 59°F 1916 | -13°F 1991 | 22% | 20% |
| Dec 5 | 32°F | 15°F | 59°F 2001 | -13°F 1991 | 22% | 20% |
| Dec 6 | 31°F | 14°F | 66°F 1939 | -18°F 1972 | 22% | 21% |
| Dec 7 | 31°F | 14°F | 55°F 1939 | -19°F 2013 | 22% | 21% |
| Dec 8 | 30°F | 14°F | 62°F 2023 | -21°F 1917 | 22% | 21% |
| Dec 9 | 30°F | 13°F | 67°F 1939 | -18°F 1958 | 22% | 22% |
| Dec 10 | 30°F | 13°F | 57°F 1939 | -20°F 1958 | 22% | 22% |
| Dec 11 | 29°F | 12°F | 60°F 1913 | -18°F 1955 | 23% | 22% |
| Dec 12 | 29°F | 12°F | 58°F 1913 | -17°F 2013 | 23% | 22% |
| Dec 13 | 28°F | 12°F | 58°F 1913 | -29°F 1917 | 23% | 23% |
| Dec 14 | 28°F | 11°F | 55°F 1908 | -20°F 1916 | 23% | 23% |
| Dec 15 | 28°F | 11°F | 58°F 1939 | -21°F 1917 | 23% | 23% |
| Dec 16 | 27°F | 11°F | 63°F 1939 | -20°F 1914 | 23% | 23% |
| Dec 17 | 27°F | 11°F | 55°F 1939 | -16°F 1964 | 23% | 24% |
| Dec 18 | 26°F | 10°F | 55°F 1962 | -27°F 2016 | 23% | 24% |
| Dec 19 | 26°F | 10°F | 50°F 1917 | -24°F 1916 | 23% | 24% |
| Dec 20 | 26°F | 10°F | 52°F 1941 | -27°F 1916 | 23% | 24% |
| Dec 21 | 25°F | 9°F | 53°F 1941 | -29°F 1916 | 23% | 24% |
| Dec 22 | 25°F | 9°F | 50°F 1941 | -25°F 1989 | 23% | 25% |
| Dec 23 | 25°F | 9°F | 56°F 2020 | -28°F 1983 | 23% | 25% |
| Dec 24 | 25°F | 8°F | 53°F 2023 | -28°F 1983 | 23% | 25% |
| Dec 25 | 24°F | 8°F | 55°F 2023 | -27°F 1983 | 23% | 25% |
| Dec 26 | 24°F | 8°F | 55°F 1905 | -30°F 1914 | 23% | 25% |
| Dec 27 | 24°F | 8°F | 50°F 2003 | -27°F 1950 | 23% | 25% |
| Dec 28 | 24°F | 7°F | 52°F 2002 | -20°F 1917 | 23% | 25% |
| Dec 29 | 23°F | 7°F | 55°F 2024 | -30°F 1917 | 23% | 25% |
| Dec 30 | 23°F | 7°F | 58°F 2004 | -19°F 1990 | 23% | 26% |
| Dec 31 | 23°F | 7°F | 47°F 1980 | -22°F 1967 | 23% | 26% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:35 AM, sunset 4:45 PM
- December 31
- sunrise 7:55 AM, sunset 4:54 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00214453 (Lakefield 2NE), public domain. Records: NOAA GHCN-Daily, station USC00219033, 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.