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As of 12:21 CDT

Weather in O'Fallon, MO

76°Current weather

O'Fallon, Thursday, 29 October, 12:21

Fog. Feels like 76°. High 78°, low 57°.

Pressure30.15 inHg
Wind4 mph NW
Humidity61%
Visibility6.0 mi
Dew point61°

Two-week outlook for O'Fallon, MO: week one averages a high of 71.1° and week two 54.3°, so week two runs 16.8° cooler than week one. Around 1.3 inches of precipitation are expected over the 14 days, across 7 wet days. The nearest weekend, October 31: 66°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 29 – November 4)71.1°59.5°1.1 in / 5 d+10.7°
2nd (November 5 – November 11)54.3°41.5°0.2 in / 2 d-2.7°

Weekend weather

Sat, October 31
Overcast
66°59°
no precip.
Sun, November 1
Rain
67°58°
0.15 in
Sat, November 7
Partly cloudy
53°35°
no precip.
Sun, November 8
Overcast
52°37°
no precip.
Fri, 3077° / 59°0.43Heavy rain
77 °Heavy rain

O'Fallon, Friday, 30 October

Heavy rain. High 77°, low 59°.

Pressure30.24 inHg
Wind7.1 mph E
Humidity90%
Visibility1.4 mi
Dew point63°
Sat, 3166° / 59°0Overcast
66 °Overcast

O'Fallon, Saturday, 31 October

Overcast. High 66°, low 59°.

Pressure30.27 inHg
Wind4.7 mph SE
Humidity80%
Visibility6.2 mi
Dew point59°
Sun, 0167° / 58°0.15Rain
67 °Rain

O'Fallon, Sunday, 1 November

Rain. High 67°, low 58°.

Pressure30.24 inHg
Wind7.9 mph SE
Humidity80%
Visibility6.2 mi
Dew point60°
Mon, 0269° / 59°0.01Light rain
69 °Light rain

O'Fallon, Monday, 2 November

Light rain. High 69°, low 59°.

Pressure30.06 inHg
Wind9.4 mph SE
Humidity81%
Visibility6.2 mi
Dew point60°
Tue, 0374° / 64°0.1Light rain
74 °Light rain

O'Fallon, Tuesday, 3 November

Light rain. High 74°, low 64°.

Pressure29.85 inHg
Wind16 mph S
Humidity61%
Visibility—
Dew point58°
Wed, 0466° / 60°0.32Rain
66 °Rain

O'Fallon, Wednesday, 4 November

Rain. High 66°, low 60°.

Pressure29.74 inHg
Wind10.3 mph SE
Humidity92%
Visibility—
Dew point59°
Thu, 0560° / 52°0.07Light rain
60 °Light rain

O'Fallon, Thursday, 5 November

Light rain. High 60°, low 52°.

Pressure29.62 inHg
Wind13.5 mph W
Humidity78%
Visibility—
Dew point52°
Fri, 0652° / 45°0Light rain
52 °Light rain

O'Fallon, Friday, 6 November

Light rain. High 52°, low 45°.

Pressure29.88 inHg
Wind13.6 mph NW
Humidity79%
Visibility—
Dew point43°
Sat, 0753° / 35°0Partly cloudy
53 °Partly cloudy

O'Fallon, Saturday, 7 November

Partly cloudy. High 53°, low 35°.

Pressure30.24 inHg
Wind7.8 mph N
Humidity34%
Visibility—
Dew point21°
Sun, 0852° / 37°0Overcast
52 °Overcast

O'Fallon, Sunday, 8 November

Overcast. High 52°, low 37°.

Pressure30.33 inHg
Wind5.3 mph E
Humidity36%
Visibility—
Dew point23°
Mon, 0947° / 42°0.12Light rain
47 °Light rain

O'Fallon, Monday, 9 November

Light rain. High 47°, low 42°.

Pressure30.27 inHg
Wind6.3 mph SE
Humidity89%
Visibility—
Dew point40°
Tue, 1055° / 40°0Mostly clear
55 °Mostly clear

O'Fallon, Tuesday, 10 November

Mostly clear. High 55°, low 40°.

Pressure30.21 inHg
Wind8.7 mph N
Humidity54%
Visibility—
Dew point35°
Wed, 1162° / 40°0Clear
62 °Clear

O'Fallon, Wednesday, 11 November

Clear. High 62°, low 40°.

Pressure30.15 inHg
Wind6.9 mph S
Humidity43%
Visibility—
Dew point34°

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.