St. Peters, Missouri Weather:
Saturday, October 17, 2026
Cloudy Weather
Day 61°
Night 41°
Precipitation 1 %
Wind 4 mph
UV Index (0 - 11+) 4
Weather Forecast History
Last Year's Weather on This Day (October 17, 2025)
Cloudy Weather

Day

84°

Night

64°

Wind

8 mph

UV Index

40

Precipitation

0 %