St. Peters, Missouri Weather:
Saturday, December 19, 2026
Snowy Weather
Day 37°
Night 19°
Precipitation 1 %
Wind 12 mph
Weather Forecast History
Last Year's Weather on This Day (December 19, 2025)
Sunny Weather

Day

39°

Night

32°

Wind

11 mph

UV Index

2

Precipitation

0 %