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Today Hourly 7 days 30 days March
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March 2026 Weather | St. Peters, Missouri

Sun 3/1
Snowy Weather
Day 41°
Night 30°
56
Mon 3/2
Cloudy Weather
Day 41°
Night 21°
25
Tue 3/3
Cloudy Weather
Day 41°
Night 21°
25
Wed 3/4
Snowy Weather
Day 41°
Night 27°
66
Thu 3/5
Snowy Weather
Day 39°
Night 23°
65
Fri 3/6
Cloudy Weather
Day 41°
Night 19°
10
Sat 3/7
Cloudy Weather
Day 41°
Night 19°
Sun 3/8
Cloudy Weather
Day 41°
Night 19°
Mon 3/9
Cloudy Weather
Day 39°
Night 18°
Tue 3/10
Cloudy Weather
Day 39°
Night 19°
Wed 3/11
Cloudy Weather
Day 39°
Night 21°
Thu 3/12
Cloudy Weather
Day 41°
Night 21°
Fri 3/13
Rainy Weather
Day 43°
Night 27°
Sat 3/14
Cloudy Weather
Day 45°
Night 30°
Sun 3/15
Cloudy Weather
Day 46°
Night 27°
Mon 3/16
Rainy Weather
Day 50°
Night 36°
Tue 3/17
Cloudy Weather
Day 52°
Night 32°
Wed 3/18
Cloudy Weather
Day 48°
Night 28°
Thu 3/19
Sunny Weather
Day 50°
Night 27°
Fri 3/20
Rainy Weather
Day 59°
Night 28°
Sat 3/21
Icy Road Conditions
Day 54°
Night 32°
Sun 3/22
Sunny Weather
Day 55°
Night 28°
Mon 3/23
Partly Sunny with Showers
Day 57°
Night 28°
Tue 3/24
Cloudy Weather
Day 50°
Night 30°
Wed 3/25
Cloudy Weather
Day 57°
Night 37°
Thu 3/26
Cloudy Weather
Day 61°
Night 43°
Fri 3/27
Cloudy Weather
Day 66°
Night 43°
Sat 3/28
Rainy Weather
Day 66°
Night 32°
Sun 3/29
Rainy Weather
Day 61°
Night 30°
Mon 3/30
Rainy Weather
Day 55°
Night 39°
Tue 3/31
Cloudy Weather
Day 55°
Night 45°