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As of 06:50 CDT

Weather in O'Fallon, MO

51°Current weather

O'Fallon, Sunday, 25 October, 06:50

Overcast. Feels like 50°. High 79°, low 50°.

Pressure30.39 inHg
Wind2.9 mph S
Humidity85%
Visibility6.2 mi
Dew point47°

Two-week outlook for O'Fallon, MO: week one averages a high of 76° and week two 67.7°, so week two runs 8.3° cooler than week one. Around 1.6 inches of precipitation are expected over the 14 days, across 3 wet days. The nearest weekend, October 25: 79°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 25 – October 31)76°56.4°0.1 in / 1 d+14.2°
2nd (November 1 – November 7)67.7°51.2°1.4 in / 2 d+9.3°

Weekend weather

Sun, October 25
Overcast
79°50°
no precip.
Sat, October 31
Light rain
70°63°
0.09 in
Sun, November 1
Rain
71°61°
0.66 in
Sat, November 7
Mostly clear
68°50°
no precip.
Mon, 2677° / 54°0Overcast
77 °Overcast

O'Fallon, Monday, 26 October

Overcast. High 77°, low 54°.

Pressure30.30 inHg
Wind3.6 mph S
Humidity52%
Visibility6.2 mi
Dew point52°
Tue, 2772° / 54°0Overcast
72 °Overcast

O'Fallon, Tuesday, 27 October

Overcast. High 72°, low 54°.

Pressure30.21 inHg
Wind6.6 mph S
Humidity49%
Visibility6.2 mi
Dew point50°
Wed, 2876° / 54°0.01Light rain
76 °Light rain

O'Fallon, Wednesday, 28 October

Light rain. High 76°, low 54°.

Pressure30.18 inHg
Wind6.9 mph S
Humidity53%
Visibility6.2 mi
Dew point55°
Thu, 2979° / 59°0.02Light rain
79 °Light rain

O'Fallon, Thursday, 29 October

Light rain. High 79°, low 59°.

Pressure30.12 inHg
Wind8.1 mph SW
Humidity50%
Visibility—
Dew point55°
Fri, 3078° / 61°0Overcast
78 °Overcast

O'Fallon, Friday, 30 October

Overcast. High 78°, low 61°.

Pressure30.12 inHg
Wind7.1 mph S
Humidity54%
Visibility—
Dew point57°
Sat, 3170° / 63°0.09Light rain
70 °Light rain

O'Fallon, Saturday, 31 October

Light rain. High 70°, low 63°.

Pressure30.12 inHg
Wind9.5 mph SE
Humidity50%
Visibility—
Dew point47°
Sun, 0171° / 61°0.66Rain
71 °Rain

O'Fallon, Sunday, 1 November

Rain. High 71°, low 61°.

Pressure30.03 inHg
Wind14.7 mph S
Humidity73%
Visibility—
Dew point60°
Mon, 0276° / 64°0.77Rain
76 °Rain

O'Fallon, Monday, 2 November

Rain. High 76°, low 64°.

Pressure29.77 inHg
Wind21 mph SW
Humidity75%
Visibility—
Dew point64°
Tue, 0366° / 51°0Partly cloudy
66 °Partly cloudy

O'Fallon, Tuesday, 3 November

Partly cloudy. High 66°, low 51°.

Pressure29.83 inHg
Wind14.1 mph W
Humidity55%
Visibility—
Dew point48°
Wed, 0461° / 43°0Clear
61 °Clear

O'Fallon, Wednesday, 4 November

Clear. High 61°, low 43°.

Pressure29.94 inHg
Wind12.9 mph NW
Humidity29%
Visibility—
Dew point25°
Thu, 0564° / 42°0Partly cloudy
64 °Partly cloudy

O'Fallon, Thursday, 5 November

Partly cloudy. High 64°, low 42°.

Pressure30.00 inHg
Wind6.3 mph NW
Humidity36%
Visibility—
Dew point32°
Fri, 0667° / 48°0Overcast
67 °Overcast

O'Fallon, Friday, 6 November

Overcast. High 67°, low 48°.

Pressure29.88 inHg
Wind11 mph SW
Humidity46%
Visibility—
Dew point42°
Sat, 0768° / 50°0Mostly clear
68 °Mostly clear

O'Fallon, Saturday, 7 November

Mostly clear. High 68°, low 50°.

Pressure29.71 inHg
Wind14.8 mph SW
Humidity45%
Visibility—
Dew point45°

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.