Forecast for Granite City, IL | Forecast Periods: 14
Monday
Mar 16
2026
Granite City, IL
Updated: 8:56 PM CDT
16°F
Partly Cloudy
12 mph NW
Precipitation: 8%
Partly cloudy, with a low around 16. Northwest wind 12 to 15 mph, with gusts as high as 25 mph.
Hourly Forecast
Extended Forecast
Tuesday
Tue, Mar 17
35°F
Mostly Sunny
6 mph W
Precipitation: 7%
Mostly sunny, with a high near 35. West wind 6 to 12 mph.
Tuesday Night
Tue, Mar 17
32°F
Chance Light Snow
7 mph S
Precipitation: 40%
A chance of snow between 7pm and 4am, then a slight chance of rain. Cloudy, with a low around 32. South wind 7 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday
Wed, Mar 18
65°F
Mostly Sunny
10 mph SW
Precipitation: 12%
Mostly sunny, with a high near 65. Southwest wind around 10 mph.
Wednesday Night
Wed, Mar 18
43°F
Mostly Cloudy
2 mph SW
Precipitation: 0%
Mostly cloudy, with a low around 43. Southwest wind 2 to 6 mph.
Thursday
Thu, Mar 19
74°F
Mostly Sunny
3 mph SW
Precipitation: 1%
Mostly sunny, with a high near 74.
Thursday Night
Thu, Mar 19
47°F
Partly Cloudy
6 mph E
Precipitation: 0%
Partly cloudy, with a low around 47.
Friday
Fri, Mar 20
78°F
Mostly Sunny
3 mph SW
Precipitation: 0%
Mostly sunny, with a high near 78.
Friday Night
Fri, Mar 20
53°F
Partly Cloudy
7 mph SW
Precipitation: 1%
Partly cloudy, with a low around 53.
Saturday
Sat, Mar 21
78°F
Mostly Sunny
6 mph W
Precipitation: 0%
Mostly sunny, with a high near 78.
Saturday Night
Sat, Mar 21
51°F
Mostly Clear
8 mph SW
Precipitation: 0%
Mostly clear, with a low around 51.
Sunday
Sun, Mar 22
73°F
Sunny
8 mph NW
Precipitation: 0%
Sunny, with a high near 73.
Sunday Night
Sun, Mar 22
41°F
Mostly Cloudy
12 mph N
Precipitation: 5%
Mostly cloudy, with a low around 41.
Monday
Mon, Mar 23
56°F
Mostly Sunny
12 mph NE
Precipitation: 5%
Mostly sunny, with a high near 56.