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As of 13:07 CDT

Weather in O'Fallon, MO

77°Current weather

O'Fallon, Sunday, 25 October, 13:07

Clear. Feels like 77°. High 77°, low 48°.

Pressure30.36 inHg
Wind5.7 mph SW
Humidity41%
Visibility6.2 mi
Dew point52°

10-day forecast for O'Fallon, MO: 48° to 78°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.

77°
Best day: Sunday, October 25
72° · 0.44 in
Worst day: Sunday, November 1

Tap any day below to see morning, afternoon, evening and overnight.

Mon, 2675° / 54°0Overcast
MorningOvercast56°feels 55°
AfternoonOvercast74°feels 73°
EveningClear59°feels 58°
OvernightOvercast56°feels 55°
75 °Overcast

O'Fallon, Monday, 26 October

Overcast. High 75°, low 54°.

Pressure30.33 inHg
Wind3.9 mph S
Humidity57%
Visibility6.2 mi
Dew point52°
Tue, 2771° / 52°0Overcast
MorningOvercast53°feels 52°
AfternoonOvercast70°feels 69°
EveningOvercast62°feels 61°
OvernightOvercast54°feels 53°
71 °Overcast

O'Fallon, Tuesday, 27 October

Overcast. High 71°, low 52°.

Pressure30.24 inHg
Wind7.1 mph S
Humidity55%
Visibility6.2 mi
Dew point52°
Wed, 2875° / 55°0.06Rain
MorningOvercast57°feels 56°
AfternoonClear74°feels 74°
EveningClear65°feels 64°
OvernightOvercast57°feels 56°
75 °Rain

O'Fallon, Wednesday, 28 October

Rain. High 75°, low 55°.

Pressure30.21 inHg
Wind6 mph S
Humidity58%
Visibility6.2 mi
Dew point55°
Thu, 2978° / 58°0.02Light rain
MorningClear61°feels 60°
AfternoonLight rain75°feels 75°
EveningLight rain68°feels 68°
OvernightClear60°feels 59°
78 °Light rain

O'Fallon, Thursday, 29 October

Light rain. High 78°, low 58°.

Pressure30.15 inHg
Wind7.7 mph SW
Humidity57%
Visibility6.2 mi
Dew point57°
Fri, 3075° / 58°0Overcast
MorningOvercast62°feels 62°
AfternoonOvercast72°feels 73°
EveningOvercast68°feels 68°
OvernightOvercast64°feels 64°
75 °Overcast

O'Fallon, Friday, 30 October

Overcast. High 75°, low 58°.

Pressure30.21 inHg
Wind6 mph E
Humidity71%
Visibility—
Dew point61°
Sat, 3165° / 62°0.35Rain
MorningRain64°feels 63°
AfternoonRain64°feels 63°
EveningRain62°feels 62°
OvernightRain62°feels 62°
65 °Rain

O'Fallon, Saturday, 31 October

Rain. High 65°, low 62°.

Pressure30.12 inHg
Wind12.5 mph S
Humidity72%
Visibility—
Dew point55°
Sun, 0172° / 60°0.44Rain
MorningRain63°feels 63°
AfternoonRain69°feels 69°
EveningRain65°feels 65°
OvernightRain64°feels 63°
72 °Rain

O'Fallon, Sunday, 1 November

Rain. High 72°, low 60°.

Pressure30.06 inHg
Wind10.6 mph NW
Humidity59%
Visibility—
Dew point54°
Mon, 0277° / 57°0Overcast
MorningOvercast62°feels 62°
AfternoonOvercast74°feels 74°
EveningOvercast71°feels 71°
OvernightOvercast68°feels 68°
77 °Overcast

O'Fallon, Monday, 2 November

Overcast. High 77°, low 57°.

Pressure29.97 inHg
Wind14.9 mph S
Humidity58%
Visibility—
Dew point57°
Tue, 0376° / 57°0.06Light rain
MorningLight rain68°feels 68°
AfternoonLight rain73°feels 72°
EveningLight rain61°feels 60°
OvernightLight rain59°feels 58°
76 °Light rain

O'Fallon, Tuesday, 3 November

Light rain. High 76°, low 57°.

Pressure29.88 inHg
Wind13.7 mph SW
Humidity38%
Visibility—
Dew point47°

About this forecast

How reliable is a 10-day forecast?

The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.

What does the time-of-day table show?

Temperature in O'Fallon, MO around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.

How is the best day chosen?

We weigh the daytime high against precipitation: a warm, dry day scores highest.