St. Peters, Missouri Weather:
Saturday, December 12, 2026
Sunny Weather
Day 48°
Night 30°
Precipitation 6 %
Wind 7 mph
Weather Forecast History
Last Year's Weather on This Day (December 12, 2025)
Cloudy Weather

Day

37°

Night

23°

Wind

7 mph

UV Index

1

Precipitation

2 %