Decatur Weather in December
Average highs run from 58°F on December 1 to 53°F on December 31, and lows from 36°F to 32°F. Normal precipitation for the month is 5.97 in.
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
- 55°F
- Average low
- 34°F
- Precipitation
- 5.97 in
- Snowfall
- 0.1 in
- Record high
- 79°FDec 5, 2013
- Record low
- 2°FDec 23, 2022
- Chance of a freeze
- 99%
- Daylight
- 10 h 00 min to 9 h 52 min
- Cloud cover
- 63%
- Humidity
- 84%
- Dew point
- 37°F
- Wind
- 6.5 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 | 58°F | 36°F | 71°F 2012 | 21°F 2020 | 0% | |
| Dec 2 | 58°F | 36°F | 73°F 1998 | 19°F 2020 | 0% | |
| Dec 3 | 58°F | 36°F | 75°F 1998 | 22°F 2024 | 0% | |
| Dec 4 | 57°F | 36°F | 78°F 1998 | 20°F 2006 | 0% | |
| Dec 5 | 57°F | 35°F | 79°F 2013 | 20°F 2006 | 0% | |
| Dec 6 | 57°F | 35°F | 75°F 1998 | 17°F 2024 | 0% | |
| Dec 7 | 57°F | 35°F | 76°F 1998 | 19°F 2006 | 0% | |
| Dec 8 | 56°F | 35°F | 72°F 2022 | 14°F 2006 | 0% | |
| Dec 9 | 56°F | 35°F | 73°F 2007 | 15°F 2006 | 0% | |
| Dec 10 | 56°F | 35°F | 76°F 2007 | 19°F 2017 | 1% | |
| Dec 11 | 56°F | 35°F | 76°F 2007 | 18°F 2013 | 1% | |
| Dec 12 | 56°F | 34°F | 71°F 2007 | 20°F 2000 | 1% | |
| Dec 13 | 55°F | 34°F | 74°F 2015 | 16°F 2010 | 1% | |
| Dec 14 | 55°F | 34°F | 72°F 2011 | 10°F 2010 | 1% | |
| Dec 15 | 55°F | 34°F | 71°F 2007 | 12°F 2025 | 1% | |
| Dec 16 | 55°F | 34°F | 71°F 2015 | 19°F 2004 | 1% | |
| Dec 17 | 55°F | 34°F | 72°F 2016 | 17°F 2000 | 1% | |
| Dec 18 | 54°F | 34°F | 72°F 2016 | 19°F 2000 | 1% | |
| Dec 19 | 54°F | 33°F | 68°F 2008 | 13°F 2000 | 1% | |
| Dec 20 | 54°F | 33°F | 69°F 2017 | 12°F 2000 | 1% | |
| Dec 21 | 54°F | 33°F | 73°F 2013 | 21°F 1996 | 1% | |
| Dec 22 | 54°F | 33°F | 67°F 2017 | 15°F 2008 | 1% | |
| Dec 23 | 54°F | 33°F | 70°F 2015 | 2°F 2022 | 1% | |
| Dec 24 | 53°F | 33°F | 75°F 2025 | 10°F 2022 | 1% | |
| Dec 25 | 53°F | 33°F | 75°F 2016 | 14°F 2022 | 1% | |
| Dec 26 | 53°F | 33°F | 71°F 2016 | 13°F 2022 | 1% | |
| Dec 27 | 53°F | 33°F | 74°F 2015 | 21°F 2010 | 1% | |
| Dec 28 | 53°F | 32°F | 73°F 2021 | 15°F 2010 | 1% | |
| Dec 29 | 53°F | 32°F | 70°F 2019 | 20°F 2000 | 1% | |
| Dec 30 | 53°F | 32°F | 69°F 2020 | 20°F 2000 | 1% | |
| Dec 31 | 53°F | 32°F | 72°F 2018 | 16°F 2017 | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 6:37 AM, sunset 4:37 PM
- December 31
- sunrise 6:55 AM, sunset 4:47 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00012209 (Decatur 4SE), public domain. Records: NOAA GHCN-Daily, station USW00053852, 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.