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As of 11:31 CST

Weather in O'Fallon, IL

68°Current weather

O'Fallon, Wednesday, 11 November, 11:31

Clear. Feels like 67°. High 68°, low 45°.

Pressure29.80 inHg
Wind15 mph SW
Humidity68%
Visibility6.2 mi
Dew point57°

Two-week outlook for O'Fallon, IL: week one averages a high of 51.8° and week two 55.7°, so week two runs 3.8° warmer than week one. Around 0.3 inches of precipitation are expected over the 14 days, across 2 wet days. The nearest weekend, November 14: 46°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (November 11 – November 17)51.8°36°0.0 in / 0 d—
2nd (November 18 – November 24)55.7°36.6°0.3 in / 2 d—

Weekend weather

Sat, November 14
Clear
46°31°
no precip.
Sun, November 15
Partly cloudy
51°31°
no precip.
Sat, November 21
Light rain
61°41°
0.08 in
Sun, November 22
Clear
45°34°
no precip.
Thu, 1254° / 37°0Overcast
54 °Overcast

O'Fallon, Thursday, 12 November

Overcast. High 54°, low 37°.

Pressure29.97 inHg
Wind13 mph NW
Humidity52%
Visibility6.2 mi
Dew point33°
Fri, 1343° / 36°0Overcast
43 °Overcast

O'Fallon, Friday, 13 November

Overcast. High 43°, low 36°.

Pressure30.09 inHg
Wind10.8 mph NW
Humidity62%
Visibility6.2 mi
Dew point26°
Sat, 1446° / 31°0Clear
46 °Clear

O'Fallon, Saturday, 14 November

Clear. High 46°, low 31°.

Pressure30.30 inHg
Wind4.4 mph N
Humidity57%
Visibility6.2 mi
Dew point26°
Sun, 1551° / 31°0Partly cloudy
51 °Partly cloudy

O'Fallon, Sunday, 15 November

Partly cloudy. High 51°, low 31°.

Pressure30.39 inHg
Wind5.2 mph E
Humidity50%
Visibility—
Dew point29°
Mon, 1648° / 38°0.01Light rain
48 °Light rain

O'Fallon, Monday, 16 November

Light rain. High 48°, low 38°.

Pressure30.50 inHg
Wind5.7 mph E
Humidity70%
Visibility—
Dew point34°
Tue, 1753° / 34°0Clear
53 °Clear

O'Fallon, Tuesday, 17 November

Clear. High 53°, low 34°.

Pressure30.36 inHg
Wind6.6 mph E
Humidity37%
Visibility—
Dew point24°
Wed, 1855° / 33°0Clear
55 °Clear

O'Fallon, Wednesday, 18 November

Clear. High 55°, low 33°.

Pressure30.27 inHg
Wind7.6 mph SE
Humidity37%
Visibility—
Dew point24°
Thu, 1961° / 36°0.03Light rain
61 °Light rain

O'Fallon, Thursday, 19 November

Light rain. High 61°, low 36°.

Pressure29.97 inHg
Wind14.1 mph SW
Humidity39%
Visibility—
Dew point28°
Fri, 2065° / 46°0.17Rain
65 °Rain

O'Fallon, Friday, 20 November

Rain. High 65°, low 46°.

Pressure29.88 inHg
Wind16.4 mph S
Humidity41%
Visibility—
Dew point36°
Sat, 2161° / 41°0.08Light rain
61 °Light rain

O'Fallon, Saturday, 21 November

Light rain. High 61°, low 41°.

Pressure29.88 inHg
Wind18.6 mph SW
Humidity68%
Visibility—
Dew point43°
Sun, 2245° / 34°0Clear
45 °Clear

O'Fallon, Sunday, 22 November

Clear. High 45°, low 34°.

Pressure30.27 inHg
Wind14.4 mph NW
Humidity49%
Visibility—
Dew point23°
Mon, 2348° / 33°0Clear
48 °Clear

O'Fallon, Monday, 23 November

Clear. High 48°, low 33°.

Pressure30.30 inHg
Wind4.4 mph SE
Humidity42%
Visibility—
Dew point23°
Tue, 2454° / 34°0Clear
54 °Clear

O'Fallon, Tuesday, 24 November

Clear. High 54°, low 34°.

Pressure30.30 inHg
Wind10 mph SW
Humidity32%
Visibility—
Dew point21°

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.