St. Peters, Missouri Weather:
Thursday, December 17, 2026
Icy Road Conditions
Day 41°
Night 27°
Precipitation 67 %
Wind 14 mph
Weather Forecast History
Last Year's Weather on This Day (December 17, 2025)
Cloudy Weather

Day

59°

Night

46°

Wind

4 mph

UV Index

2

Precipitation

25 %