Weather in O'Fallon, MO
O'Fallon, Friday, 23 October, 09:42
Clear. Feels like 61°. High 75°, low 49°.
Two-week outlook for O'Fallon, MO: week one averages a high of 74.6° and week two 68.2°, so week two runs 6.3° cooler than week one. Around 1.4 inches of precipitation are expected over the 14 days, across 5 wet days. The nearest weekend, October 24: 75°, dry.
Week one vs week two
| Week | High | Low | Precipitation | Vs normal |
|---|---|---|---|---|
| 1st (October 23 – October 29) | 74.6° | 53° | 0.0 in / 0 d | +12.2° |
| 2nd (October 30 – November 5) | 68.2° | 56.6° | 1.4 in / 5 d | +8.5° |
Weekend weather
0O'Fallon, Saturday, 24 October
Overcast. High 75°, low 48°.
0O'Fallon, Sunday, 25 October
Overcast. High 75°, low 51°.
0O'Fallon, Monday, 26 October
Overcast. High 73°, low 54°.
0O'Fallon, Tuesday, 27 October
Overcast. High 71°, low 53°.
0O'Fallon, Wednesday, 28 October
Clear. High 76°, low 57°.
0O'Fallon, Thursday, 29 October
Light rain. High 77°, low 59°.
0.31O'Fallon, Friday, 30 October
Rain. High 57°, low 52°.
0.2O'Fallon, Saturday, 31 October
Light rain. High 62°, low 55°.
0O'Fallon, Sunday, 1 November
Overcast. High 69°, low 54°.
0.5O'Fallon, Monday, 2 November
Rain. High 60°, low 56°.
0.29O'Fallon, Tuesday, 3 November
Light rain. High 79°, low 60°.
0.08O'Fallon, Wednesday, 4 November
Light rain. High 75°, low 59°.
0O'Fallon, Thursday, 5 November
Overcast. High 76°, low 58°.
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, MO, 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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