Weather Tomorrow in Decatur, IL
Friday, May 22, 2026
Cloudy
Precip chance
58%
Wind
8-12 mph
Humidity
76%
Feels like
65–56°F
Rain forecast
Rain likely starts around 12 AM and may continue until 4 AM. Peak chance: 58% around 12 AM.
Data source: National Weather Service (NOAA) · Updated just now
Tomorrow by Hour
54°Temperature trend67°
| Time | Temp | Condition | Rain % | Wind | ||
|---|---|---|---|---|---|---|
| 5 AM☽ | 59°F | Mostly Cloudy | 2% | 9 mph E | ||
| 6 AM☽ | 58°F | Mostly Cloudy | 2% | 9 mph E | ||
| 7 AM☽ | 58°F | Mostly Cloudy | 2% | 9 mph E | ||
| 8 AM☽ | 56°F | Mostly Cloudy | 3% | 10 mph E | ||
| 9 AM☽ | 55°F | Mostly Cloudy | 3% | 10 mph ENE | ||
| 10 AM☽ | 54°F | Mostly Cloudy | 3% | 10 mph ENE | ||
| 11 AM | 54°F | Mostly Cloudy | 2% | 10 mph ENE | ||
| 12 PM | 55°F | Partly Sunny | 5% | 10 mph ENE | ||
| 1 PM | 56°F | Mostly Cloudy | 11% | 12 mph ENE | ||
| 2 PM | 59°F | Mostly Cloudy | 14% | 12 mph ENE | ||
| 3 PM | 61°F | Slight Chance Rain Showers | 19% | 12 mph ENE | ||
| 4 PM | 62°F | Chance Rain Showers | 26% | 12 mph ENE | ||
| 5 PM | 63°F | Chance Rain Showers | 35% | 12 mph E | ||
| 6 PM | 65°F | Chance Rain Showers | 39% | 12 mph E | ||
| 7 PM | 67°F | Chance Rain Showers | 39% | 10 mph ENE | ||
| 8 PM | 67°F | Chance Rain Showers | 39% | 9 mph ENE | ||
| 9 PM | 66°F | Chance Showers And Thunderstorms | 39% | 9 mph ENE | ||
| 10 PM | 67°F | Chance Showers And Thunderstorms | 39% | 9 mph ENE | ||
| 11 PM☽ | 67°F | Chance Showers And Thunderstorms | 39% | 9 mph ENE | ||
| 12 AM☽ | 66°F | Showers And Thunderstorms Likely | 58% | 10 mph E | ||
| 1 AM☽ | 66°F | Showers And Thunderstorms Likely | 58% | 9 mph E | ||
| 2 AM☽ | 65°F | Showers And Thunderstorms Likely | 58% | 9 mph E | ||
| 3 AM☽ | 64°F | Rain Showers Likely | 58% | 9 mph ENE | ||
| 4 AM☽ | 64°F | Rain Showers Likely | 58% | 8 mph ENE | ||
Precipitation Timeline
100%
50%
58%
5a11a5p11p
<20%20-50%50-70%>70%
What to Wear Tomorrow
Warm and comfortable — dress light
Clothing
- • T-shirt or light blouse
- • Shorts or light pants
Footwear
Comfortable shoes or sandals
Accessories
- • Umbrella
Conditions
High: 67°F
Low: 54°F
Wind: 8-12 mph
Rain: 58%
Rain expected around 12 AM — carry an umbrella.
Best Time to Be Outside Tomorrow
8 PM – 10 PM
Excellent conditions for outdoor activities (comfortable temp, light wind, daylight)
5a11a5p11p
More for Decatur, IL
- Will it rain tomorrow in Decatur?
- What time will it rain tomorrow in Decatur?
- Weather tomorrow by hour in Decatur
- Heat index tomorrow by zip code near Decatur
- Dew point tomorrow by zip code near Decatur
- Wind chill tomorrow by zip code near Decatur
- What to wear tomorrow in Decatur
- Best time to be outside tomorrow in Decatur
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Frequently Asked Questions
What is the weather forecast for tomorrow in Decatur, IL?
Tomorrow in Decatur: High of 67°F, Low of 54°F. Cloudy with 58% chance of precipitation. Wind 8-12 mph.
Will it rain tomorrow in Decatur?
Rain likely starts around 12 AM and may continue until 4 AM. Peak chance: 58% around 12 AM.
What should I wear tomorrow in Decatur?
With a high of 67°F and low of 54°F, check our "What to Wear" section above for specific clothing recommendations based on temperature, wind, and precipitation.
How accurate is this forecast?
Our forecasts come directly from the National Weather Service (NOAA), which provides some of the most accurate weather predictions available. Tomorrow forecasts are generally 80-90% accurate, with accuracy decreasing the further out you look. Data is refreshed every 30 minutes.