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As of 07:15 CDT

Weather in O'Fallon, MO

58°Current weather

O'Fallon, Saturday, 31 October, 07:15

Clear. Feels like 57°. High 70°, low 58°.

Pressure30.24 inHg
Wind1 mph SE
Humidity79%
Visibility6.2 mi
Dew point51°

10-day forecast for O'Fallon, MO: 49° to 71°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.

70°
Best day: Saturday, October 31
64° · 0.61 in
Worst day: Sunday, November 8

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

Sun, 0171° / 59°0.02Light rain
MorningOvercast61°feels 61°
AfternoonOvercast71°feels 70°
EveningOvercast61°feels 61°
OvernightOvercast62°feels 62°
71 °Light rain

O'Fallon, Sunday, 1 November

Light rain. High 71°, low 59°.

Pressure30.24 inHg
Wind10.8 mph SE
Humidity70%
Visibility6.2 mi
Dew point55°
Mon, 0269° / 58°0Light rain
MorningOvercast59°feels 58°
AfternoonLight rain68°feels 68°
EveningOvercast66°feels 66°
OvernightOvercast58°feels 58°
69 °Light rain

O'Fallon, Monday, 2 November

Light rain. High 69°, low 58°.

Pressure30.03 inHg
Wind11.1 mph SE
Humidity83%
Visibility6.2 mi
Dew point60°
Tue, 0371° / 65°0.02Light rain
MorningOvercast65°feels 66°
AfternoonOvercast71°feels 71°
EveningOvercast68°feels 69°
OvernightOvercast65°feels 65°
71 °Light rain

O'Fallon, Tuesday, 3 November

Light rain. High 71°, low 65°.

Pressure29.88 inHg
Wind15.6 mph S
Humidity75%
Visibility6.2 mi
Dew point62°
Wed, 0469° / 62°0.59Rain
MorningRain65°feels 66°
AfternoonRain68°feels 68°
EveningRain64°feels 64°
OvernightLight rain65°feels 66°
69 °Rain

O'Fallon, Wednesday, 4 November

Rain. High 69°, low 62°.

Pressure29.74 inHg
Wind10.6 mph SE
Humidity84%
Visibility—
Dew point63°
Thu, 0567° / 55°0.3Rain
MorningRain64°feels 64°
AfternoonRain66°feels 66°
EveningRain59°feels 59°
OvernightRain57°feels 56°
67 °Rain

O'Fallon, Thursday, 5 November

Rain. High 67°, low 55°.

Pressure29.59 inHg
Wind10.7 mph NW
Humidity82%
Visibility—
Dew point61°
Fri, 0668° / 49°0Partly cloudy
MorningPartly cloudy53°feels 52°
AfternoonPartly cloudy64°feels 63°
EveningPartly cloudy58°feels 57°
OvernightPartly cloudy55°feels 54°
68 °Partly cloudy

O'Fallon, Friday, 6 November

Partly cloudy. High 68°, low 49°.

Pressure29.97 inHg
Wind5.6 mph NE
Humidity53%
Visibility—
Dew point46°
Sat, 0763° / 54°0.01Light rain
MorningLight rain58°feels 57°
AfternoonLight rain63°feels 63°
EveningLight rain62°feels 62°
OvernightLight rain61°feels 61°
63 °Light rain

O'Fallon, Saturday, 7 November

Light rain. High 63°, low 54°.

Pressure29.94 inHg
Wind4.8 mph SE
Humidity84%
Visibility—
Dew point57°
Sun, 0864° / 59°0.61Rain
MorningRain60°feels 60°
AfternoonRain62°feels 62°
EveningRain61°feels 61°
OvernightRain59°feels 60°
64 °Rain

O'Fallon, Sunday, 8 November

Rain. High 64°, low 59°.

Pressure29.91 inHg
Wind9.4 mph E
Humidity90%
Visibility—
Dew point58°
Mon, 0968° / 57°0.18Rain
MorningRain61°feels 61°
AfternoonRain67°feels 66°
EveningRain60°feels 58°
OvernightRain58°feels 56°
68 °Rain

O'Fallon, Monday, 9 November

Rain. High 68°, low 57°.

Pressure29.85 inHg
Wind8.7 mph SE
Humidity54%
Visibility—
Dew point49°

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.