EN
English Español

As of 15:01 CDT

Weather in O'Fallon, MO

69°Current weather

O'Fallon, Tuesday, 27 October, 15:01

Overcast. Feels like 68°. High 69°, low 51°.

Pressure30.15 inHg
Wind4.6 mph S
Humidity59%
Visibility6.2 mi
Dew point54°

Two-week outlook for O'Fallon, MO: week one averages a high of 72.2° and week two 59°, so week two runs 13.2° cooler than week one. Around 2.4 inches of precipitation are expected over the 14 days, across 7 wet days. The nearest weekend, October 31: 70°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 27 – November 2)72.2°56.1°0.4 in / 2 d+10.8°
2nd (November 3 – November 9)59°50.8°2.0 in / 5 d+1.3°

Weekend weather

Sat, October 31
Overcast
70°59°
no precip.
Sun, November 1
Light rain
67°60°
0.13 in
Sat, November 7
Overcast
59°47°
no precip.
Sun, November 8
Mostly clear
64°43°
no precip.
Wed, 2879° / 51°0Clear
79 °Clear

O'Fallon, Wednesday, 28 October

Clear. High 79°, low 51°.

Pressure30.21 inHg
Wind5.8 mph S
Humidity53%
Visibility6.2 mi
Dew point54°
Thu, 2977° / 54°0Mostly clear
77 °Mostly clear

O'Fallon, Thursday, 29 October

Mostly clear. High 77°, low 54°.

Pressure30.15 inHg
Wind6 mph SW
Humidity57%
Visibility6.2 mi
Dew point58°
Fri, 3071° / 58°0.27Rain
71 °Rain

O'Fallon, Friday, 30 October

Rain. High 71°, low 58°.

Pressure30.24 inHg
Wind2.3 mph SE
Humidity81%
Visibility6.2 mi
Dew point62°
Sat, 3170° / 59°0Overcast
70 °Overcast

O'Fallon, Saturday, 31 October

Overcast. High 70°, low 59°.

Pressure30.21 inHg
Wind2.9 mph SE
Humidity74%
Visibility6.2 mi
Dew point58°
Sun, 0167° / 60°0.13Light rain
67 °Light rain

O'Fallon, Sunday, 1 November

Light rain. High 67°, low 60°.

Pressure30.15 inHg
Wind7.6 mph E
Humidity68%
Visibility—
Dew point55°
Mon, 0272° / 60°0.01Light rain
72 °Light rain

O'Fallon, Monday, 2 November

Light rain. High 72°, low 60°.

Pressure29.83 inHg
Wind6.9 mph S
Humidity59%
Visibility—
Dew point55°
Tue, 0365° / 59°0.6Rain
65 °Rain

O'Fallon, Tuesday, 3 November

Rain. High 65°, low 59°.

Pressure29.83 inHg
Wind15.7 mph E
Humidity92%
Visibility—
Dew point58°
Wed, 0458° / 55°0.67Rain
58 °Rain

O'Fallon, Wednesday, 4 November

Rain. High 58°, low 55°.

Pressure29.74 inHg
Wind16.3 mph E
Humidity86%
Visibility—
Dew point54°
Thu, 0560° / 53°0.42Rain
60 °Rain

O'Fallon, Thursday, 5 November

Rain. High 60°, low 53°.

Pressure29.59 inHg
Wind13.7 mph NW
Humidity92%
Visibility—
Dew point58°
Fri, 0652° / 49°0.08Light rain
52 °Light rain

O'Fallon, Friday, 6 November

Light rain. High 52°, low 49°.

Pressure29.85 inHg
Wind13.1 mph NW
Humidity89%
Visibility—
Dew point46°
Sat, 0759° / 47°0Overcast
59 °Overcast

O'Fallon, Saturday, 7 November

Overcast. High 59°, low 47°.

Pressure29.94 inHg
Wind8.1 mph N
Humidity58%
Visibility—
Dew point41°
Sun, 0864° / 43°0Mostly clear
64 °Mostly clear

O'Fallon, Sunday, 8 November

Mostly clear. High 64°, low 43°.

Pressure30.03 inHg
Wind7.9 mph S
Humidity47%
Visibility—
Dew point38°
Mon, 0956° / 49°0.19Light rain
56 °Light rain

O'Fallon, Monday, 9 November

Light rain. High 56°, low 49°.

Pressure29.85 inHg
Wind14 mph SW
Humidity90%
Visibility—
Dew point51°

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.