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As of 21:30 CDT

Weather in O'Fallon, MO

60°Current weather

O'Fallon, Saturday, 24 October, 21:30

Partly cloudy. Feels like 59°. High 76°, low 48°.

Pressure30.33 inHg
Wind4.9 mph SE
Humidity67%
Visibility6.2 mi
Dew point49°

Two-week outlook for O'Fallon, MO: week one averages a high of 76.8° and week two 71.2°, so week two runs 5.6° cooler than week one. Around 1.4 inches of precipitation are expected over the 14 days, across 3 wet days. The nearest weekend, October 24: 76°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 24 – October 30)76.8°53.9°0.0 in / 0 d+14.7°
2nd (October 31 – November 6)71.2°58.2°1.4 in / 3 d+12.1°

Weekend weather

Sat, October 24
Overcast
76°48°
no precip.
Sun, October 25
Overcast
78°49°
no precip.
Sat, October 31
Light rain
79°65°
0.02 in
Sun, November 1
Light rain
81°70°
0.04 in
Sun, 2578° / 49°0Overcast
78 °Overcast

O'Fallon, Sunday, 25 October

Overcast. High 78°, low 49°.

Pressure30.39 inHg
Wind2.4 mph S
Humidity51%
Visibility6.2 mi
Dew point52°
Mon, 2676° / 53°0Overcast
76 °Overcast

O'Fallon, Monday, 26 October

Overcast. High 76°, low 53°.

Pressure30.30 inHg
Wind3.5 mph S
Humidity53%
Visibility6.2 mi
Dew point52°
Tue, 2773° / 53°0Overcast
73 °Overcast

O'Fallon, Tuesday, 27 October

Overcast. High 73°, low 53°.

Pressure30.21 inHg
Wind6.3 mph S
Humidity53%
Visibility6.2 mi
Dew point51°
Wed, 2877° / 55°0Clear
77 °Clear

O'Fallon, Wednesday, 28 October

Clear. High 77°, low 55°.

Pressure30.18 inHg
Wind6.3 mph S
Humidity52%
Visibility6.2 mi
Dew point54°
Thu, 2979° / 59°0Clear
79 °Clear

O'Fallon, Thursday, 29 October

Clear. High 79°, low 59°.

Pressure30.15 inHg
Wind7.9 mph S
Humidity47%
Visibility—
Dew point53°
Fri, 3078° / 59°0Overcast
78 °Overcast

O'Fallon, Friday, 30 October

Overcast. High 78°, low 59°.

Pressure30.15 inHg
Wind8.4 mph S
Humidity41%
Visibility—
Dew point49°
Sat, 3179° / 65°0.02Light rain
79 °Light rain

O'Fallon, Saturday, 31 October

Light rain. High 79°, low 65°.

Pressure30.03 inHg
Wind14.4 mph S
Humidity41%
Visibility—
Dew point52°
Sun, 0181° / 70°0.04Light rain
81 °Light rain

O'Fallon, Sunday, 1 November

Light rain. High 81°, low 70°.

Pressure29.91 inHg
Wind18.6 mph S
Humidity52%
Visibility—
Dew point60°
Mon, 0276° / 63°0Overcast
76 °Overcast

O'Fallon, Monday, 2 November

Overcast. High 76°, low 63°.

Pressure30.06 inHg
Wind6.8 mph N
Humidity45%
Visibility—
Dew point51°
Tue, 0364° / 53°0.83Rain
64 °Rain

O'Fallon, Tuesday, 3 November

Rain. High 64°, low 53°.

Pressure30.03 inHg
Wind18.1 mph E
Humidity86%
Visibility—
Dew point52°
Wed, 0461° / 56°0.54Heavy rain
61 °Heavy rain

O'Fallon, Wednesday, 4 November

Heavy rain. High 61°, low 56°.

Pressure29.77 inHg
Wind13.2 mph W
Humidity86%
Visibility—
Dew point53°
Thu, 0565° / 50°0Overcast
65 °Overcast

O'Fallon, Thursday, 5 November

Overcast. High 65°, low 50°.

Pressure30.12 inHg
Wind9.4 mph W
Humidity38%
Visibility—
Dew point35°
Fri, 0671° / 51°0Partly cloudy
71 °Partly cloudy

O'Fallon, Friday, 6 November

Partly cloudy. High 71°, low 51°.

Pressure29.91 inHg
Wind13.2 mph S
Humidity42%
Visibility—
Dew point44°

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.