Weather forecast for tomorrow
Sumner, IL

Weather forecast for tomorrow

Wednesday, Jun 18.

PM Thunderstorms / Wind
5:24 am

8:20 pm
CDT
PM Thunderstorms / Wind
86°F / 70°F
  • Wind: 24mph SSW
  • Humidity: 76%
  • Precip. probability: 77%
  • Precipitation: 0.91"
  • UV index: 9
Tomorrow, on Wednesday, afternoon storms may produce gusty winds and occasional lightning.
Substantial precipitation is predicted. Forecasted temperatures will peak at a hot 86°F and dip to a minimum of an agreeable 69.8°F.
The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is estimated at a steamy 98.6°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
The day’s top temperature is expected to be slightly warmer than the typical June high of 82°F.
Sunrise will be at 5:24 am and sunset at 8:20 pm; tomorrow's daylight will last for 14h and 56min.

Frequently asked questions

What is the weather forecast for Sumner for tomorrow?
Tomorrow, in Sumner, stormy conditions with thunder and lightning are expected in the afternoon.
Will it rain tomorrow?
Yes. With a probability of 77%, increased precipitation of 0.91" is forecasted.
What will be the highest temperature tomorrow?
Tomorrow, the maximum temperature will be 86°F, while the minimum temperature will be 69.8°F. The maximum heat index, which adjusts the air temperature based on humidity, is estimated at 98.6°F.
The highest temperature will be a couple of degrees higher than the average maximum of 82°F in June. The lowest temperature will be also relatively higher than the average low of 65.5°F.
When is the sunrise / sunset tomorrow?
On Wednesday, in Sumner, sunrise will be at 5:24 am and sunset at 8:20 pm (CDT).
How long will the day be tomorrow?
Tomorrow, the daylight will last for 14h and 56min.

Hourly weather forecast

12 am
  • 75°F
  • Feels like:
    79°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 92%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 10mi
2 am
  • 75°F
  • Feels like:
    79°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 92%
  • Precip. probability: 19%
  • Precipitation: 0"
  • Visibility: 9mi
4 am
  • 73°F
  • Feels like:
    77°F
Partly Cloudy
Partly Cloudy
  • Wind: 5mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 94%
  • Precip. probability: 19%
  • Precipitation: 0"
  • Visibility: 9mi
Sunrise: 5:24 am
6 am
  • 73°F
  • Feels like:
    77°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph S
  • Pressure: 29.83"Hg
  • Humidity: 95%
  • Precip. probability: 22%
  • Precipitation: 0"
  • Visibility: 7mi
8 am
  • 77°F
  • Feels like:
    82°F
Cloudy
Cloudy
  • Wind: 11mph S
  • Pressure: 29.83"Hg
  • Humidity: 90%
  • Precip. probability: 16%
  • Precipitation: 0"
  • Visibility: 10mi
10 am
  • 81°F
  • Feels like:
    88°F
Mostly Cloudy / Wind
Mostly Cloudy / Wind
  • Wind: 21mph SSW
  • Pressure: 29.83"Hg
  • Humidity: 79%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 10mi
12 pm
  • 84°F
  • Feels like:
    91°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Wind: 22mph SSW
  • Pressure: 29.8"Hg
  • Humidity: 68%
  • Precip. probability: 16%
  • Precipitation: 0"
  • Visibility: 10mi
2 pm
  • 86°F
  • Feels like:
    93°F
Thunderstorms / Wind
Thunderstorms / Wind
  • Wind: 24mph SSW
  • Pressure: 29.8"Hg
  • Humidity: 65%
  • Precip. probability: 77%
  • Precipitation: 0.2"
  • Visibility: 6mi
4 pm
  • 81°F
  • Feels like:
    86°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Wind: 21mph SW
  • Pressure: 29.8"Hg
  • Humidity: 73%
  • Precip. probability: 37%
  • Precipitation: 0.04"
  • Visibility: 7mi
6 pm
  • 79°F
  • Feels like:
    84°F
Few Showers
Few Showers
  • Wind: 14mph SW
  • Pressure: 29.77"Hg
  • Humidity: 76%
  • Precip. probability: 30%
  • Precipitation: 0.04"
  • Visibility: 8mi
8 pm
  • 75°F
  • Feels like:
    81°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 12mph SW
  • Pressure: 29.77"Hg
  • Humidity: 82%
  • Precip. probability: 42%
  • Precipitation: 0.16"
  • Visibility: 6mi
Sunset: 8:20 pm
10 pm
  • 73°F
  • Feels like:
    75°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 11mph SW
  • Pressure: 29.8"Hg
  • Humidity: 90%
  • Precip. probability: 53%
  • Precipitation: 0.2"
  • Visibility: 5mi
Tomorrow, on Wednesday, weather will be unstable, and a combination of primarily cloud-filled and occasionally thunderstorm-prone, bright and damp weather is anticipated.
Rainfall is predicted from 1 pm to 4 pm, 6 pm, and from 8 pm to 11 pm. With moderate precipitation of 0.2", the most intense rain will be falling at 2 pm, 3 pm and 10 pm.
The temperature will vary between a minimum of 71.6°F and a maximum of 86°F. The feels-like temperature will vary between the lowest temperature of 75.2°F and the highest temperature of 93.2°F. The hottest part of the day will be at 1 pm and 2 pm.
The temperature is expected to be slightly warmer than the average peak in June, which is 82°F. The minimum temperature will be also moderately higher than June's average low of 65.5°F.
Updated: Jun 17, 2025 @ 21:08:23 UTC
Published by: Weather U.S. | About Us
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