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As of 00:27 CDT

Weather in O'Fallon, IL

53°Current weather

O'Fallon, Saturday, 24 October, 00:27

Clear. Feels like 52°. High 75°, low 47°.

Pressure30.27 inHg
Wind0 mph N
Humidity84%
Visibility6.2 mi
Dew point48°

Two-week outlook for O'Fallon, IL: week one averages a high of 75.6° and week two 67.9°, so week two runs 7.7° cooler than week one. Around 0.2 inches of precipitation are expected over the 14 days, across 1 wet days. The nearest weekend, October 24: 75°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 24 – October 30)75.6°53°0.0 in / 0 d—
2nd (October 31 – November 6)67.9°51.1°0.2 in / 1 d—

Weekend weather

Sat, October 24
Overcast
75°47°
no precip.
Sun, October 25
Overcast
76°47°
no precip.
Sat, October 31
Light rain
65°61°
0.03 in
Sun, November 1
Light rain
67°57°
0.14 in
Sun, 2576° / 47°0Overcast
76 °Overcast

O'Fallon, Sunday, 25 October

Overcast. High 76°, low 47°.

Pressure30.39 inHg
Wind2.2 mph S
Humidity51%
Visibility6.2 mi
Dew point52°
Mon, 2674° / 55°0Overcast
74 °Overcast

O'Fallon, Monday, 26 October

Overcast. High 74°, low 55°.

Pressure30.33 inHg
Wind3 mph SW
Humidity51%
Visibility6.2 mi
Dew point52°
Tue, 2772° / 53°0Overcast
72 °Overcast

O'Fallon, Tuesday, 27 October

Overcast. High 72°, low 53°.

Pressure30.24 inHg
Wind3.8 mph S
Humidity57%
Visibility6.2 mi
Dew point51°
Wed, 2876° / 54°0.02Light rain
76 °Light rain

O'Fallon, Wednesday, 28 October

Light rain. High 76°, low 54°.

Pressure30.21 inHg
Wind7.7 mph S
Humidity44%
Visibility—
Dew point48°
Thu, 2978° / 55°0Mostly clear
78 °Mostly clear

O'Fallon, Thursday, 29 October

Mostly clear. High 78°, low 55°.

Pressure30.24 inHg
Wind7.7 mph S
Humidity35%
Visibility—
Dew point44°
Fri, 3078° / 60°0Overcast
78 °Overcast

O'Fallon, Friday, 30 October

Overcast. High 78°, low 60°.

Pressure30.18 inHg
Wind7.4 mph S
Humidity29%
Visibility—
Dew point39°
Sat, 3165° / 61°0.03Light rain
65 °Light rain

O'Fallon, Saturday, 31 October

Light rain. High 65°, low 61°.

Pressure30.12 inHg
Wind12.8 mph S
Humidity43%
Visibility—
Dew point41°
Sun, 0167° / 57°0.14Light rain
67 °Light rain

O'Fallon, Sunday, 1 November

Light rain. High 67°, low 57°.

Pressure30.00 inHg
Wind13.5 mph S
Humidity84%
Visibility—
Dew point57°
Mon, 0262° / 45°0Partly cloudy
62 °Partly cloudy

O'Fallon, Monday, 2 November

Partly cloudy. High 62°, low 45°.

Pressure30.18 inHg
Wind12.9 mph NW
Humidity28%
Visibility—
Dew point26°
Tue, 0361° / 45°0Overcast
61 °Overcast

O'Fallon, Tuesday, 3 November

Overcast. High 61°, low 45°.

Pressure30.12 inHg
Wind11.1 mph NW
Humidity33%
Visibility—
Dew point29°
Wed, 0469° / 42°0Overcast
69 °Overcast

O'Fallon, Wednesday, 4 November

Overcast. High 69°, low 42°.

Pressure30.03 inHg
Wind10.2 mph SE
Humidity35%
Visibility—
Dew point31°
Thu, 0575° / 52°0Mostly clear
75 °Mostly clear

O'Fallon, Thursday, 5 November

Mostly clear. High 75°, low 52°.

Pressure30.06 inHg
Wind8.7 mph W
Humidity45%
Visibility—
Dew point46°
Fri, 0677° / 57°0Overcast
77 °Overcast

O'Fallon, Friday, 6 November

Overcast. High 77°, low 57°.

Pressure30.09 inHg
Wind11.6 mph SW
Humidity40%
Visibility—
Dew point47°

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.