Average Monthly Sunshine hours in O'Fallon (MO)

This graph shows the average number of hours per month that O'Fallon receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.

• On average, July is the sunniest month with 311 hours of sunshine.
• December has on average the lowest amount of sunshine with 128 hours.
• On average, the total annual amount of sun is 2612 hours.

Forecast: is it sunny in O'Fallon (MO)?

Wed   Nov 20

11°C | 3°C

W 29 km/h

almost clear and no rain

hourly forecast

Thu   Nov 21

7°C | 0°C

NW 29 km/h

almost clear and no rain

hourly forecast

Fri   Nov 22

8°C | 1°C

NW 18 km/h

broken clouds and no rain

hourly forecast

5-Day Forecast 10-Day Forecast