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As of 09:42 CDT

Weather in O'Fallon, MO

62°Current weather

O'Fallon, Friday, 23 October, 09:42

Clear. Feels like 61°. High 75°, low 49°.

Pressure30.30 inHg
Wind3 mph SE
Humidity72%
Visibility6.2 mi
Dew point53°

10-day forecast for O'Fallon, MO: 48° to 77°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

77°
Best day: Thursday, October 29
57° · 0.31 in
Worst day: Friday, October 30

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

Sat, 2475° / 48°0Overcast
MorningPartly cloudy51°feels 50°
AfternoonMostly clear73°feels 72°
EveningPartly cloudy56°feels 55°
OvernightOvercast54°feels 53°
75 °Overcast

O'Fallon, Saturday, 24 October

Overcast. High 75°, low 48°.

Pressure30.36 inHg
Wind4.3 mph SE
Humidity52%
Visibility6.2 mi
Dew point50°
Sun, 2575° / 51°0Overcast
MorningOvercast52°feels 51°
AfternoonOvercast74°feels 73°
EveningOvercast62°feels 61°
OvernightOvercast55°feels 54°
75 °Overcast

O'Fallon, Sunday, 25 October

Overcast. High 75°, low 51°.

Pressure30.39 inHg
Wind3.1 mph SE
Humidity57%
Visibility6.2 mi
Dew point54°
Mon, 2673° / 54°0Overcast
MorningOvercast55°feels 54°
AfternoonOvercast72°feels 71°
EveningPartly cloudy62°feels 61°
OvernightOvercast56°feels 55°
73 °Overcast

O'Fallon, Monday, 26 October

Overcast. High 73°, low 54°.

Pressure30.33 inHg
Wind1.9 mph SW
Humidity55%
Visibility6.2 mi
Dew point53°
Tue, 2771° / 53°0Overcast
MorningOvercast56°feels 55°
AfternoonOvercast69°feels 68°
EveningOvercast63°feels 62°
OvernightOvercast56°feels 55°
71 °Overcast

O'Fallon, Tuesday, 27 October

Overcast. High 71°, low 53°.

Pressure30.21 inHg
Wind6.3 mph SE
Humidity51%
Visibility—
Dew point49°
Wed, 2876° / 57°0Clear
MorningClear62°feels 61°
AfternoonClear73°feels 72°
EveningClear66°feels 65°
OvernightClear62°feels 61°
76 °Clear

O'Fallon, Wednesday, 28 October

Clear. High 76°, low 57°.

Pressure30.09 inHg
Wind9.2 mph S
Humidity42%
Visibility—
Dew point47°
Thu, 2977° / 59°0Light rain
MorningLight rain64°feels 63°
AfternoonLight rain75°feels 74°
EveningLight rain65°feels 65°
OvernightLight rain59°feels 58°
77 °Light rain

O'Fallon, Thursday, 29 October

Light rain. High 77°, low 59°.

Pressure30.12 inHg
Wind10.2 mph SW
Humidity34%
Visibility—
Dew point44°
Fri, 3057° / 52°0.31Rain
MorningRain53°feels 52°
AfternoonRain54°feels 54°
EveningRain55°feels 55°
OvernightRain56°feels 55°
57 °Rain

O'Fallon, Friday, 30 October

Rain. High 57°, low 52°.

Pressure30.15 inHg
Wind9.2 mph NE
Humidity92%
Visibility—
Dew point52°
Sat, 3162° / 55°0.2Light rain
MorningLight rain57°feels 57°
AfternoonLight rain60°feels 60°
EveningLight rain59°feels 58°
OvernightLight rain58°feels 57°
62 °Light rain

O'Fallon, Saturday, 31 October

Light rain. High 62°, low 55°.

Pressure30.06 inHg
Wind6.3 mph E
Humidity77%
Visibility—
Dew point53°
Sun, 0169° / 54°0Overcast
MorningOvercast58°feels 58°
AfternoonOvercast67°feels 66°
EveningOvercast61°feels 60°
OvernightOvercast59°feels 58°
69 °Overcast

O'Fallon, Sunday, 1 November

Overcast. High 69°, low 54°.

Pressure30.12 inHg
Wind3.9 mph SE
Humidity56%
Visibility—
Dew point50°

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.