St. Peters, Missouri Weather:
Saturday, October 31, 2026
Cloudy Weather
Day 57°
Night 32°
Precipitation 12 %
Wind 6 mph
Weather Forecast History
Last Year's Weather on This Day (October 31, 2025)
Sunny Weather

Day

64°

Night

39°

Wind

8 mph

UV Index

3

Precipitation

4 %