EN
English Español

As of 07:36 CDT

Weather in O'Fallon, MO

51°Current weather

O'Fallon, Friday, 23 October, 07:36

Clear. Feels like 50°. High 77°, low 50°.

Pressure30.27 inHg
Wind3.4 mph SE
Humidity85%
Visibility6.2 mi
Dew point47°

10-day forecast for O'Fallon, MO: 45° to 78°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

78°
Best day: Thursday, October 29
66° · 0.33 in
Worst day: Friday, October 30

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

Sat, 2476° / 48°0Overcast
MorningPartly cloudy51°feels 50°
AfternoonClear75°feels 74°
EveningOvercast62°feels 60°
OvernightOvercast54°feels 53°
76 °Overcast

O'Fallon, Saturday, 24 October

Overcast. High 76°, low 48°.

Pressure30.33 inHg
Wind4.9 mph SE
Humidity49%
Visibility6.2 mi
Dew point49°
Sun, 2576° / 52°0Overcast
MorningOvercast53°feels 52°
AfternoonPartly cloudy76°feels 75°
EveningOvercast63°feels 62°
OvernightPartly cloudy56°feels 55°
76 °Overcast

O'Fallon, Sunday, 25 October

Overcast. High 76°, low 52°.

Pressure30.36 inHg
Wind2.8 mph SE
Humidity51%
Visibility6.2 mi
Dew point52°
Mon, 2676° / 56°0Overcast
MorningOvercast56°feels 55°
AfternoonOvercast74°feels 73°
EveningPartly cloudy65°feels 64°
OvernightOvercast58°feels 57°
76 °Overcast

O'Fallon, Monday, 26 October

Overcast. High 76°, low 56°.

Pressure30.33 inHg
Wind1.8 mph S
Humidity51%
Visibility6.2 mi
Dew point52°
Tue, 2772° / 54°0Overcast
MorningOvercast59°feels 58°
AfternoonOvercast71°feels 70°
EveningOvercast64°feels 63°
OvernightPartly cloudy57°feels 56°
72 °Overcast

O'Fallon, Tuesday, 27 October

Overcast. High 72°, low 54°.

Pressure30.21 inHg
Wind5.1 mph S
Humidity46%
Visibility—
Dew point47°
Wed, 2876° / 58°0Clear
MorningClear63°feels 62°
AfternoonClear73°feels 72°
EveningClear67°feels 66°
OvernightClear63°feels 61°
76 °Clear

O'Fallon, Wednesday, 28 October

Clear. High 76°, low 58°.

Pressure30.03 inHg
Wind10 mph SW
Humidity38%
Visibility—
Dew point45°
Thu, 2978° / 58°0Overcast
MorningOvercast64°feels 62°
AfternoonOvercast75°feels 74°
EveningOvercast68°feels 66°
OvernightOvercast66°feels 64°
78 °Overcast

O'Fallon, Thursday, 29 October

Overcast. High 78°, low 58°.

Pressure30.12 inHg
Wind13.4 mph S
Humidity31%
Visibility—
Dew point41°
Fri, 3066° / 57°0.33Rain
MorningRain64°feels 63°
AfternoonRain59°feels 58°
EveningRain60°feels 59°
OvernightRain61°feels 60°
66 °Rain

O'Fallon, Friday, 30 October

Rain. High 66°, low 57°.

Pressure30.03 inHg
Wind13.5 mph S
Humidity82%
Visibility—
Dew point54°
Sat, 3162° / 57°0.28Rain
MorningRain60°feels 60°
AfternoonRain61°feels 61°
EveningRain59°feels 59°
OvernightRain58°feels 57°
62 °Rain

O'Fallon, Saturday, 31 October

Rain. High 62°, low 57°.

Pressure29.88 inHg
Wind11.9 mph S
Humidity96%
Visibility—
Dew point60°
Sun, 0153° / 45°0Overcast
MorningOvercast51°feels 48°
AfternoonOvercast53°feels 50°
EveningOvercast47°feels 42°
OvernightOvercast46°feels 41°
53 °Overcast

O'Fallon, Sunday, 1 November

Overcast. High 53°, low 45°.

Pressure30.09 inHg
Wind13.8 mph W
Humidity67%
Visibility—
Dew point42°

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.