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Today Hourly 7 days 30 days March
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March 2026 Weather | O'Fallon, Missouri

Sun 3/1
Rainy Weather
Day 39°
Night 28°
72
Mon 3/2
Cloudy Weather
Day 39°
Night 30°
25
Tue 3/3
Cloudy Weather
Day 50°
Night 34°
25
Wed 3/4
Cloudy Weather
Day 50°
Night 46°
0
Thu 3/5
Rainy Weather
Day 66°
Night 52°
81
Fri 3/6
Rainy Weather
Day 66°
Night 52°
80
Sat 3/7
Cloudy Weather
Day 64°
Night 48°
2
Sun 3/8
Rainy Weather
Day 64°
Night 45°
66
Mon 3/9
Cloudy Weather
Day 66°
Night 46°
0
Tue 3/10
Cloudy Weather
Day 54°
Night 30°
25
Wed 3/11
Sunny Weather
Day 61°
Night 39°
20
Thu 3/12
Sunny Weather
Day 63°
Night 43°
5
Fri 3/13
Rainy Weather
Day 63°
Night 43°
55
Sat 3/14
Rainy Weather
Day 61°
Night 39°
57
Sun 3/15
Sunny Weather
Day 61°
Night 39°
20
Mon 3/16
Cloudy Weather
Day 61°
Night 39°
20
Tue 3/17
Sunny Weather
Day 54°
Night 37°
5
Wed 3/18
Sunny Weather
Day 63°
Night 39°
5
Thu 3/19
Cloudy Weather
Day 63°
Night 43°
25
Fri 3/20
Cloudy Weather
Day 63°
Night 41°
25
Sat 3/21
Rainy Weather
Day 63°
Night 28°
70
Sun 3/22
Cloudy Weather
Day 46°
Night 28°
20
Mon 3/23
Cloudy Weather
Day 48°
Night 28°
25
Tue 3/24
Cloudy Weather
Day 55°
Night 43°
25
Wed 3/25
Cloudy Weather
Day 64°
Night 43°
25
Thu 3/26
Rainy Weather
Day 64°
Night 37°
55
Fri 3/27
Cloudy Weather
Day 54°
Night 32°
20
Sat 3/28
Rainy Weather
Day 61°
Night 45°
Sun 3/29
Cloudy Weather
Day 63°
Night 46°
Mon 3/30
Sunny Weather
Day 68°
Night 46°
Tue 3/31
Rainy Weather
Day 66°
Night 45°