19°
Light rain, feels like 17°.
Decatur, Illinois, United States · Tuesday, 3 November 2026 21:45 local time
Low/High
17°/22°
Humidity
89%
Visibility
14.2 km
Wind
24.5 km/h
Dew point
17°
UV
0.0
Next 24 Hours
Decatur Hourly Weather — 48 hours ahead
| Time | Weather | Weather | Temperature | Feels like | Rain | Humidity | Wind |
|---|---|---|---|---|---|---|---|
| Light rain | 19° | 18° | 100% | 87% | 24 km/h | |
| Light rain | 19° | 17° | 100% | 89% | 24 km/h | |
| Moderate rain | 18° | 17° | 100% | 90% | 22 km/h | |
| Moderate rain | 18° | 18° | 100% | 95% | 17 km/h | |
 | Light showers | 18° | 17° | 94% | 91% | 23 km/h | |
| Light showers | 18° | 17° | 84% | 94% | 20 km/h | |
 | Overcast | 18° | 17° | 71% | 94% | 18 km/h | |
| Overcast | 17° | 17° | 51% | 92% | 17 km/h | |
| Overcast | 17° | 16° | 28% | 90% | 15 km/h | |
 | Overcast | 16° | 16° | 10% | 90% | 14 km/h | |
| Overcast | 15° | 14° | 4% | 92% | 16 km/h | |
| Overcast | 15° | 14° | 3% | 92% | 17 km/h | |
| Overcast | 15° | 13° | 3% | 88% | 19 km/h | |
| Overcast | 15° | 12° | 2% | 84% | 21 km/h | |
| Overcast | 14° | 12° | 1% | 83% | 20 km/h | |
| Overcast | 14° | 12° | 0% | 82% | 18 km/h | |
| Overcast | 14° | 12° | 0% | 82% | 18 km/h | |
| Overcast | 13° | 10° | 0% | 87% | 18 km/h | |
| Overcast | 12° | 10° | 0% | 87% | 16 km/h | |
| Overcast | 12° | 10° | 0% | 88% | 14 km/h | |
| Overcast | 12° | 9° | 0% | 86% | 15 km/h | |
| Overcast | 11° | 9° | 0% | 88% | 14 km/h | |
 | Partly cloudy | 11° | 9° | 0% | 88% | 16 km/h | |
| Partly cloudy | 11° | 8° | 0% | 88% | 16 km/h | |
| Overcast | 10° | 7° | 0% | 86% | 16 km/h | |
| Overcast | 10° | 7° | 0% | 86% | 15 km/h | |
| Partly cloudy | 10° | 7° | 0% | 89% | 17 km/h | |
| Overcast | 9° | 6° | 0% | 90% | 16 km/h | |
| Overcast | 9° | 6° | 0% | 89% | 17 km/h | |
| Overcast | 9° | 6° | 0% | 87% | 15 km/h | |
| Partly cloudy | 9° | 6° | 0% | 86% | 15 km/h | |
| Partly cloudy | 9° | 6° | 0% | 89% | 14 km/h | |
| Partly cloudy | 9° | 6° | 0% | 89% | 15 km/h | |
| Overcast | 9° | 5° | 0% | 89% | 16 km/h | |
 | Partly cloudy | 9° | 6° | 0% | 89% | 15 km/h | |
| Partly cloudy | 9° | 5° | 0% | 86% | 17 km/h | |
| Partly cloudy | 9° | 6° | 0% | 85% | 18 km/h | |
| Partly cloudy | 10° | 6° | 0% | 85% | 18 km/h | |
| Partly cloudy | 10° | 7° | 0% | 85% | 18 km/h | |
| Partly cloudy | 10° | 7° | 0% | 84% | 19 km/h | |
| Overcast | 10° | 7° | 0% | 85% | 19 km/h | |
| Overcast | 10° | 7° | 55% | 89% | 19 km/h | |
| Overcast | 10° | 7° | 0% | 91% | 18 km/h | |
| Overcast | 11° | 7° | 55% | 85% | 18 km/h | |
| Overcast | 11° | 7° | 0% | 81% | 18 km/h | |
| Overcast | 11° | 7° | 0% | 76% | 20 km/h | |
| Overcast | 11° | 7° | 0% | 73% | 19 km/h | |
| Overcast | 11° | 8° | 0% | 74% | 19 km/h | |
Summary
Over the next 48 hours in Decatur, temperatures range from 9–19°C. The highest chance of rain is 100%, around 21:00 on Tuesday (local time).
Updated at 21:48 local time, 3 November 2026
Decatur Hourly Temperature and Chance of Rain
Decatur Air Quality
Good · AQI 37Air quality is good and poses little or no risk for outdoor activity.
PM2.5 (µg/m³)2.6
PM10 (µg/m³)3.3
O₃ (µg/m³)69
NO₂ (µg/m³)2.2
SO₂ (µg/m³)0.6
CO (µg/m³)141
Windy Map
Weather Tools
- Weather TomorrowMorning, afternoon, evening and night
- 10-Day ForecastTemperature and rain, day by day
- Weekend WeatherSaturday and Sunday at a glance
- Weather HistoryThis date in past years
- Sunset TimeWhat time the sun sets today and tomorrow
- Sunrise TimeWhat time the sun rises today and tomorrow
- Temperature NowHow hot or cold it is right now
- Will It Rain Today?Hourly chance of rain today and tomorrow
- UV IndexHourly UV level today
- Air QualityAQI and PM2.5 today
- Wind SpeedWind speed now and hour by hour
- Weather RadarLive rain radar map
- Tide TimesHigh and low tide today
- Moon PhaseTonight's moon and full moon dates
- Lunar EclipseLunar eclipse dates to 2030
- Solar EclipseSolar eclipse dates to 2030
- Meteor ShowersMeteor shower peak dates in 2026
- Compare WeatherCompare the weather in two cities
- Weather widgetAdd a weather forecast to your website.
- Celsius to Fahrenheit°C to °F, with formula
- Fahrenheit to Celsius°F to °C, with formula
- Wind speed converterKnots, mph, km/h and m/s
- Beaufort scaleWind force 0–12 with speeds
- Barometric pressureCurrent pressure, trends and 7-day graph
- Wind directionDegrees to compass points
- Dew point calculatorFrom temperature and humidity
- Relative humidity calculatorFrom temperature and dew point
- Heat index calculatorFeels-like temperature in heat
- Wind chill calculatorFeels-like temperature in the cold
- Rainfall convertermm to inches and liters per m²
- Visibility converterkm, miles and nautical miles
- Weather toolsConverters, calculators and forecast tools