Weather in O'Fallon, IL
O'Fallon, Sunday, 8 November, 15:36
Clear. Feels like 65°. High 66°, low 34°.
Two-week outlook for O'Fallon, IL: week one averages a high of 58.3° and week two 65.5°, so week two runs 7.2° warmer than week one. Around 1.9 inches of precipitation are expected over the 14 days, across 7 wet days. The nearest weekend, November 8: 66°, dry.
Week one vs week two
| Week | High | Low | Precipitation | Vs normal |
|---|---|---|---|---|
| 1st (November 8 – November 14) | 58.3° | 38.5° | 1.0 in / 2 d | — |
| 2nd (November 15 – November 21) | 65.5° | 49.7° | 0.9 in / 5 d | — |
Weekend weather
0O'Fallon, Monday, 9 November
Clear. High 65°, low 37°.
0O'Fallon, Tuesday, 10 November
Clear. High 66°, low 43°.
0.54O'Fallon, Wednesday, 11 November
Rain. High 65°, low 46°.
0.42O'Fallon, Thursday, 12 November
Rain. High 52°, low 41°.
0
O'Fallon, Friday, 13 November
Overcast. High 43°, low 35°.
0O'Fallon, Saturday, 14 November
Mostly clear. High 51°, low 33°.
0O'Fallon, Sunday, 15 November
Clear. High 68°, low 40°.
0.07O'Fallon, Monday, 16 November
Light rain. High 74°, low 52°.
0.25O'Fallon, Tuesday, 17 November
Rain. High 73°, low 56°.
0.44O'Fallon, Wednesday, 18 November
Rain. High 67°, low 59°.
0.01O'Fallon, Thursday, 19 November
Light rain. High 64°, low 49°.
0.1O'Fallon, Friday, 20 November
Light rain. High 61°, low 49°.
0.04O'Fallon, Saturday, 21 November
Light rain. High 52°, low 43°.
About this forecast
Can I plan a trip on a 2-week forecast?
Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.
What does the "Vs normal" column mean?
It is the gap between the forecast and the climate normal for those same dates in O'Fallon, IL, computed over 60 years. A positive value means the week runs warmer than usual.
Why are weekends shown separately?
Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.
Sun and moon today
Weather history
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