St. Peters, Missouri Weather:
Wednesday, December 9, 2026
Sunny Weather
Day 37°
Night 27°
Precipitation 65 %
Wind 16 mph
Weather Forecast History
Last Year's Weather on This Day (December 9, 2025)
Cloudy Weather

Day

57°

Night

39°

Wind

12 mph

UV Index

2

Precipitation

0 %