Decatur, IL Hourly Weather
Hour-by-Hour Forecast
Today's Weather Breakdown
Currently 70°F and rain. Today in Decatur, IL: high of 78°F, low of 67°F with rain, partially cloudy. 67% chance of rain.
| Currently | 70°F · Rain |
| Today's High | 78°F |
| Today's Low | 67°F |
| Rain Chance | 67% |
Hour-by-Hour Temperature & Rain Probability
In Decatur, IL today, temperatures start near 67°F in the early morning and climb toward a high of 78°F in the afternoon. Rain probability climbs through the day, reaching around 67%. The afternoon hours carry the highest precipitation risk — bring an umbrella if you plan to be outside.
Reading the Hourly Weather Forecast
The hour-by-hour table shows temperature, feels-like temperature, precipitation probability, wind speed, humidity, and UV index for each hour of the day in Decatur. Rain probability above 40% for a given hour indicates a meaningful chance of precipitation during that window. UV index above 6 means sun protection is recommended for extended time outdoors.
Hourly forecasts are updated from live weather station data. For the full multi-day picture, see the Decatur 10-day forecast or check tomorrow's rain forecast for precipitation timing.
Hour-by-Hour Forecast for Decatur, IL
| Time | Temp | Feels Like | Rain | Conditions |
|---|---|---|---|---|
| 12:00 AM | 72°F | 72°F | 0% | Clear |
| 1:00 AM | 70°F | 70°F | 0% | Clear |
| 2:00 AM | 69°F | 69°F | 0% | Clear |
| 3:00 AM | 68°F | 68°F | 1% | Partially cloudy |
| 4:00 AM | 68°F | 68°F | 4% | Partially cloudy |
| 5:00 AM | 67°F | 67°F | 20% | Partially cloudy |
| 6:00 AM | 67°F | 67°F | 30% | Partially cloudy |
| 7:00 AM | 67°F | 67°F | 47% | Rain, Partially cloudy |
| 8:00 AM | 68°F | 68°F | 45% | Partially cloudy |
| 9:00 AM | 72°F | 72°F | 46% | Rain, Overcast |
| 10:00 AM | 73°F | 73°F | 45% | Overcast |
| 11:00 AM | 75°F | 75°F | 45% | Overcast |
| 12:00 PM | 77°F | 77°F | 52% | Rain, Partially cloudy |
| 1:00 PM | 77°F | 77°F | 63% | Rain, Overcast |
| 2:00 PM | 78°F | 78°F | 62% | Rain, Partially cloudy |
| 3:00 PM | 78°F | 78°F | 54% | Rain, Partially cloudy |
| 4:00 PM | 78°F | 78°F | 55% | Rain, Partially cloudy |
| 5:00 PM | 77°F | 77°F | 67% | Rain, Partially cloudy |
| 6:00 PM | 75°F | 75°F | 59% | Rain, Partially cloudy |
| 7:00 PM | 73°F | 73°F | 47% | Rain, Partially cloudy |
| 8:00 PM | 70°F | 70°F | 38% | Partially cloudy |
| 9:00 PM | 68°F | 68°F | 35% | Partially cloudy |
| 10:00 PM | 68°F | 68°F | 38% | Partially cloudy |
| 11:00 PM | 67°F | 67°F | 62% | Rain, Partially cloudy |
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