Decatur Weather in January
Average highs run from 48°F on January 1 to 49°F on January 31, and lows from 28°F to 28°F. Normal precipitation for the month is 5.62 in over about 11 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 48°F
- Average low
- 28°F
- Precipitation
- 5.62 in
- Snowfall
- 0.9 in
- Record high
- 75°FJan 13, 1960
- Record low
- -15°FJan 21, 1985
- Chance of a freeze
- 100%
- Daylight
- 9 h 48 min to 10 h 26 min
- Cloud cover
- 65%
- Humidity
- 85%
- Dew point
- 32°F
- Wind
- 4.9 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 |
|---|---|---|---|---|---|---|
| Jan 1 | 48°F | 28°F | 67°F 2019 | 6°F 1977 | 35% | 2% |
| Jan 2 | 48°F | 28°F | 73°F 2022 | 7°F 2018 | 35% | 2% |
| Jan 3 | 48°F | 28°F | 70°F 1997 | 6°F 1979 | 35% | 2% |
| Jan 4 | 48°F | 28°F | 70°F 2000 | 9°F 1969 | 35% | 2% |
| Jan 5 | 48°F | 28°F | 68°F 2004 | 2°F 1959 | 35% | 3% |
| Jan 6 | 48°F | 28°F | 67°F 2005 | 8°F 1959 | 35% | 3% |
| Jan 7 | 48°F | 28°F | 63°F 2007 | 0°F 2014 | 35% | 3% |
| Jan 8 | 48°F | 28°F | 68°F 2008 | 2°F 1970 | 35% | 3% |
| Jan 9 | 48°F | 28°F | 68°F 2019 | -4°F 1970 | 35% | 3% |
| Jan 10 | 48°F | 28°F | 68°F 1957 | -2°F 1970 | 35% | 3% |
| Jan 11 | 48°F | 28°F | 68°F 1960 | -5°F 1982 | 35% | 3% |
| Jan 12 | 48°F | 27°F | 69°F 2020 | 5°F 1981 | 35% | 3% |
| Jan 13 | 48°F | 27°F | 75°F 1960 | 4°F 1962 | 35% | 3% |
| Jan 14 | 48°F | 27°F | 70°F 1960 | 6°F 1963 | 35% | 3% |
| Jan 15 | 48°F | 27°F | 70°F 2017 | 6°F 1964 | 35% | 3% |
| Jan 16 | 48°F | 27°F | 69°F 2017 | -1°F 1972 | 35% | 3% |
| Jan 17 | 48°F | 27°F | 68°F 1990 | -8°F 1982 | 35% | 3% |
| Jan 18 | 48°F | 27°F | 66°F 1980 | 2°F 2024 | 35% | 3% |
| Jan 19 | 48°F | 27°F | 63°F 2023 | -3°F 1994 | 35% | 3% |
| Jan 20 | 48°F | 27°F | 68°F 2023 | -9°F 1985 | 35% | 3% |
| Jan 21 | 48°F | 27°F | 69°F 1968 | -15°F 1985 | 35% | 3% |
| Jan 22 | 48°F | 27°F | 68°F 1974 | 3°F 1970 | 35% | 3% |
| Jan 23 | 48°F | 27°F | 72°F 1999 | 5°F 2025 | 35% | 3% |
| Jan 24 | 48°F | 27°F | 72°F 1972 | -9°F 1963 | 35% | 3% |
| Jan 25 | 49°F | 27°F | 71°F 1967 | 3°F 1963 | 35% | 3% |
| Jan 26 | 49°F | 28°F | 70°F 1962 | 8°F 1978 | 35% | 3% |
| Jan 27 | 49°F | 28°F | 68°F 1974 | 4°F 1986 | 36% | 4% |
| Jan 28 | 49°F | 28°F | 73°F 1975 | -1°F 1986 | 36% | 4% |
| Jan 29 | 49°F | 28°F | 71°F 1957 | 1°F 1977 | 36% | 4% |
| Jan 30 | 49°F | 28°F | 69°F 2002 | -9°F 1966 | 36% | 4% |
| Jan 31 | 49°F | 28°F | 74°F 2002 | -9°F 1966 | 36% | 4% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:49 AM, sunset 5:37 PM
- January 31
- sunrise 7:40 AM, sunset 6:06 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00402388 (Decatur 7NE), public domain. Records: NOAA GHCN-Daily, station USC00402360, 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.