National Weather Service

News Headlines

Event Summary: August 15, 2025 Severe Line of Storms Impacts Eastern Iowa

Hazardous Weather Conditions

Current conditions at

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Fair

90°F

32°C

Humidity	69%
Wind Speed	S 7 mph
Barometer	30.02 in
Dewpoint	78°F (26°C)
Visibility	10.00 mi
Heat Index	105°F (41°C)
Last update	16 Aug 4:35 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

6 Miles SSW Viola IL

Heat Advisory August 16, 04:46pm until August 16, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 16, 04:46pm until August 16, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
This Afternoon
High: 92 °F
Mostly Sunny
Tonight
Low: 72 °F
Partly Cloudy
Sunday
High: 90 °F
Mostly Sunny
Sunday Night
Low: 73 °F
Partly Cloudy
Monday
High: 94 °F
Sunny
Monday Night
Low: 73 °F
Partly Cloudy
then Chance
T-storms
Tuesday
High: 90 °F
Mostly Sunny
Tuesday Night
Low: 67 °F
Partly Cloudy

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 92. Heat index values as high as 106. South wind around 10 mph.

Tonight

Partly cloudy, with a low around 72. Southwest wind around 5 mph becoming east after midnight.

Sunday

Mostly sunny, with a high near 90. Heat index values as high as 102. Southeast wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.

Sunday Night

Partly cloudy, with a low around 73. Southeast wind around 5 mph.

Monday

Sunny, with a high near 94.

Monday Night

A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.

Tuesday

Mostly sunny, with a high near 90.

Tuesday Night

Partly cloudy, with a low around 67.

Wednesday

Mostly sunny, with a high near 81.