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As of 02:17 CDT

Weather in O'Fallon, MO

55°Current weather

O'Fallon, Friday, 23 October, 02:17

Clear. Feels like 54°. High 76°, low 50°.

Pressure30.21 inHg
Wind1.8 mph SE
Humidity78%
Visibility6.2 mi
Dew point48°

Two-week outlook for O'Fallon, MO: week one averages a high of 74.7° and week two 64.2°, so week two runs 10.6° cooler than week one. Around 0.3 inches of precipitation are expected over the 14 days, across 1 wet days. The nearest weekend, October 24: 74°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 23 – October 29)74.7°52.9°0.0 in / 0 d+12.4°
2nd (October 30 – November 5)64.2°51.5°0.3 in / 1 d+4.4°

Weekend weather

Sat, October 24
Overcast
74°48°
no precip.
Sun, October 25
Partly cloudy
75°51°
no precip.
Sat, October 31
Light rain
64°59°
0.3 in
Sun, November 1
Light rain
67°61°
0.03 in
Sat, 2474° / 48°0Overcast
74 °Overcast

O'Fallon, Saturday, 24 October

Overcast. High 74°, low 48°.

Pressure30.33 inHg
Wind5 mph SE
Humidity53%
Visibility6.2 mi
Dew point50°
Sun, 2575° / 51°0Partly cloudy
75 °Partly cloudy

O'Fallon, Sunday, 25 October

Partly cloudy. High 75°, low 51°.

Pressure30.39 inHg
Wind2.7 mph S
Humidity54%
Visibility6.2 mi
Dew point53°
Mon, 2674° / 55°0Overcast
74 °Overcast

O'Fallon, Monday, 26 October

Overcast. High 74°, low 55°.

Pressure30.33 inHg
Wind1.1 mph S
Humidity55%
Visibility6.2 mi
Dew point52°
Tue, 2771° / 52°0Overcast
71 °Overcast

O'Fallon, Tuesday, 27 October

Overcast. High 71°, low 52°.

Pressure30.27 inHg
Wind5.6 mph SE
Humidity51%
Visibility—
Dew point48°
Wed, 2877° / 55°0Mostly clear
77 °Mostly clear

O'Fallon, Wednesday, 28 October

Mostly clear. High 77°, low 55°.

Pressure30.09 inHg
Wind10.2 mph S
Humidity39%
Visibility—
Dew point45°
Thu, 2978° / 60°0Overcast
78 °Overcast

O'Fallon, Thursday, 29 October

Overcast. High 78°, low 60°.

Pressure30.12 inHg
Wind11.4 mph S
Humidity26%
Visibility—
Dew point38°
Fri, 3073° / 59°0Light rain
73 °Light rain

O'Fallon, Friday, 30 October

Light rain. High 73°, low 59°.

Pressure30.06 inHg
Wind8.9 mph SW
Humidity35%
Visibility—
Dew point42°
Sat, 3164° / 59°0.3Light rain
64 °Light rain

O'Fallon, Saturday, 31 October

Light rain. High 64°, low 59°.

Pressure29.91 inHg
Wind14.2 mph S
Humidity90%
Visibility—
Dew point58°
Sun, 0167° / 61°0.03Light rain
67 °Light rain

O'Fallon, Sunday, 1 November

Light rain. High 67°, low 61°.

Pressure29.97 inHg
Wind10.1 mph S
Humidity80%
Visibility—
Dew point60°
Mon, 0268° / 53°0Overcast
68 °Overcast

O'Fallon, Monday, 2 November

Overcast. High 68°, low 53°.

Pressure30.03 inHg
Wind9.7 mph N
Humidity70%
Visibility—
Dew point55°
Tue, 0360° / 47°0Overcast
60 °Overcast

O'Fallon, Tuesday, 3 November

Overcast. High 60°, low 47°.

Pressure30.24 inHg
Wind11.9 mph NW
Humidity45%
Visibility—
Dew point37°
Wed, 0457° / 43°0Overcast
57 °Overcast

O'Fallon, Wednesday, 4 November

Overcast. High 57°, low 43°.

Pressure30.15 inHg
Wind14.8 mph NW
Humidity46%
Visibility—
Dew point34°
Thu, 0561° / 38°0Clear
61 °Clear

O'Fallon, Thursday, 5 November

Clear. High 61°, low 38°.

Pressure30.18 inHg
Wind12 mph W
Humidity34%
Visibility—
Dew point28°

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.