St. Peters, Missouri Weather:
Monday, September 28, 2026
Cloudy Weather
Day 77°
Night 55°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (September 28, 2025)
Cloudy Weather

Day

88°

Night

52°

Wind

4 mph

UV Index

50

Precipitation

1 %