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 | ||
| Sat Dec 6 |  | 35 / 27 °F | Overcast. | 33 °F | 3 mph | ↑ | 86% | 2% | 0.00" | 0 (Low) | 7:03 am | 4:30 pm |
| Sun Dec 7 |  | 35 / 20 °F | Light snow. Overcast. | 22 °F | 12 mph | ↑ | 84% | 43% | 0.47" | 0 (Low) | 7:03 am | 4:30 pm |
| Mon Dec 8 |  | 29 / 18 °F | Morning clouds. | 28 °F | 2 mph | ↑ | 68% | 0% | 0.00" | 0 (Low) | 7:04 am | 4:30 pm |
| Tue Dec 9 | | 46 / 25 °F | Overcast. | 37 °F | 15 mph | ↑ | 67% | 0% | 0.00" | 0 (Low) | 7:05 am | 4:30 pm |
| Wed Dec 10 |  | 46 / 32 °F | Sprinkles early. Overcast. | 28 °F | 13 mph | ↑ | 62% | 43% | 0.04" | 0 (Low) | 7:06 am | 4:30 pm |
| Thu Dec 11 |  | 38 / 28 °F | Snow changing to rain. Overcast. | 27 °F | 11 mph | ↑ | 83% | 62% | 2.65" | 0 (Low) | 7:07 am | 4:31 pm |
| Fri Dec 12 | | 28 / 4 °F | Light snow early. Overcast. | -1 °F | 18 mph | ↑ | 65% | 24% | 0.40" | 0 (Low) | 7:08 am | 4:31 pm |
| Sat Dec 13 | | 19 / 0 °F | Afternoon clouds. | 7 °F | 10 mph | ↑ | 56% | 4% | 0.00" | 0 (Low) | 7:08 am | 4:31 pm |
| Sun Dec 14 | | 29 / 15 °F | Afternoon clouds. | 10 °F | 19 mph | ↑ | 39% | 5% | 0.00" | 0 (Low) | 7:09 am | 4:31 pm |
| Mon Dec 15 |  | 36 / 26 °F | Mostly cloudy. | 28 °F | 11 mph | ↑ | 61% | 6% | 0.00" | 0 (Low) | 7:10 am | 4:32 pm |
| Tue Dec 16 |  | 31 / 24 °F | Sunny. | 19 °F | 13 mph | ↑ | 55% | 4% | 0.00" | 0 (Low) | 7:10 am | 4:32 pm |
| Wed Dec 17 | | 31 / 18 °F | Overcast. | 23 °F | 6 mph | ↑ | 37% | 6% | 0.00" | 0 (Low) | 7:11 am | 4:32 pm |
| Thu Dec 18 | | 31 / 18 °F | Partly cloudy. | 26 °F | 3 mph | ↑ | 40% | 6% | 0.00" | 0 (Low) | 7:12 am | 4:33 pm |
| Fri Dec 19 | | 35 / 21 °F | Light snow late. Overcast. | 25 °F | 13 mph | ↑ | 91% | 54% | 0.34" | 0 (Low) | 7:12 am | 4:33 pm |
| Sat Dec 20 | | 32 / 19 °F | Light snow early. Cloudy. | 20 °F | 12 mph | ↑ | 37% | 39% | 0.06" | 0 (Low) | 7:13 am | 4:33 pm |
| * Updated Saturday, December 6, 2025 3:24:07 am Decatur time - Weather by CustomWeather, © 2025 | ||||||||||||