Decatur Extended Forecast with high and low temperatures
2 Week Extended Forecast in Decatur, Illinois, USA
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| Conditions | Comfort | Precipitation | Sun | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day | Temperature | Weather | Feels Like | Wind | Humidity | Chance | Amount | UV | Sunrise | Sunset | ||
| Wed Jan 21 |  | 40 / 27 °F | Morning clouds. | 29 °F | 14 mph | ↑ | 49% | 5% | 0.00" | 0 (Low) | 7:12 am | 5:02 pm |
| Thu Jan 22 |  | 32 / 18 °F | Overcast. | 23 °F | 9 mph | ↑ | 36% | 5% | 0.00" | 0 (Low) | 7:11 am | 5:03 pm |
| Fri Jan 23 | | 23 / 1 °F | Overcast. | -10 °F | 15 mph | ↑ | 27% | 0% | 0.00" | 0 (Low) | 7:11 am | 5:04 pm |
| Sat Jan 24 | | 14 / -3 °F | Overcast. | 1 °F | 8 mph | ↑ | 46% | 0% | 0.00" | 0 (Low) | 7:10 am | 5:05 pm |
| Sun Jan 25 | | 21 / 10 °F | Overcast. | 12 °F | 6 mph | ↑ | 62% | 3% | 0.00" | 0 (Low) | 7:09 am | 5:07 pm |
| Mon Jan 26 | | 16 / 5 °F | Morning clouds. | 3 °F | 8 mph | ↑ | 45% | 0% | 0.00" | 0 (Low) | 7:08 am | 5:08 pm |
| Tue Jan 27 |  | 30 / 4 °F | Sunny. | 17 °F | 17 mph | ↑ | 58% | 0% | 0.00" | 3 (Moderate) | 7:08 am | 5:09 pm |
| Wed Jan 28 | | 34 / 19 °F | Overcast. | 25 °F | 11 mph | ↑ | 65% | 6% | 0.00" | 0 (Low) | 7:07 am | 5:10 pm |
| Thu Jan 29 |  | 30 / 22 °F | Mostly sunny. | 18 °F | 17 mph | ↑ | 37% | 44% | 0.13" | 3 (Moderate) | 7:06 am | 5:11 pm |
| Fri Jan 30 | | 26 / 18 °F | Sunny. | 17 °F | 9 mph | ↑ | 38% | 6% | 0.00" | 3 (Moderate) | 7:05 am | 5:13 pm |
| Sat Jan 31 | | 27 / 16 °F | Sunny. | 17 °F | 12 mph | ↑ | 38% | 6% | 0.00" | 3 (Moderate) | 7:04 am | 5:14 pm |
| Sun Feb 1 | | 30 / 17 °F | Morning clouds. | 21 °F | 10 mph | ↑ | 51% | 6% | 0.00" | 3 (Moderate) | 7:03 am | 5:15 pm |
| Mon Feb 2 | | 37 / 21 °F | Mostly sunny. | 27 °F | 13 mph | ↑ | 26% | 3% | 0.00" | 3 (Moderate) | 7:02 am | 5:16 pm |
| Tue Feb 3 | | 37 / 21 °F | Mostly sunny. | 30 °F | 7 mph | ↑ | 46% | 4% | 0.00" | 3 (Moderate) | 7:01 am | 5:17 pm |
| Wed Feb 4 | | 38 / 21 °F | Sunny. | 38 °F | 3 mph | ↑ | 49% | 5% | 0.00" | 3 (Moderate) | 7:00 am | 5:19 pm |
| * Updated Wednesday, January 21, 2026 3:24:03 am Decatur time - Weather by CustomWeather, © 2026 | ||||||||||||