O Fallon, US-Missouri – Weather Tomorrow June 1

Monday, June 1
Night 01:00am – 07:00am rain showers
19° 20° 66° 68°
rain showers
SSE 8 km/h 5 mph
Morning 07:00am – 01:00pm cloudy
20° 25° 68° 77°
cloudy
SSW 9 km/h 6 mph
Afternoon 01:00pm – 07:00pm mostly clear
26° 27° 79° 81°
mostly clear
NNE 7 km/h 4 mph
Evening 07:00pm – 01:00am fair
20° 24° 68° 75°
fair
NNE 14 km/h 9 mph

Weather Tomorrow – Summary

Tomorrow, on Monday morning cloudy, during the day mostly clear, evening fair. Temperature: 19° to 27°C66° to 81°F. Wind: 7 to 14 km/h4 to 9 mph.

Data source: MET Norway — Last updated: May 31, 2026, 12:47 UTC