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As of 18:20 CDT

Weather in O'Fallon, MO

69°Current weather

O'Fallon, Friday, 30 October, 18:20

Clear. Feels like 69°. High 74°, low 57°.

Pressure30.21 inHg
Wind3.4 mph E
Humidity76%
Visibility6.2 mi
Dew point61°

10-day forecast for O'Fallon, MO: 53° to 76°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.

74°
Best day: Friday, November 6
69° · 0.35 in
Worst day: Tuesday, November 3

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

Sat, 3169° / 61°0Overcast
MorningOvercast61°feels 60°
AfternoonOvercast67°feels 67°
EveningOvercast64°feels 63°
OvernightOvercast65°feels 65°
69 °Overcast

O'Fallon, Saturday, 31 October

Overcast. High 69°, low 61°.

Pressure30.27 inHg
Wind4.2 mph SE
Humidity61%
Visibility6.2 mi
Dew point50°
Sun, 0166° / 57°0.01Light rain
MorningMostly clear57°feels 57°
AfternoonOvercast66°feels 65°
EveningOvercast62°feels 61°
OvernightOvercast63°feels 63°
66 °Light rain

O'Fallon, Sunday, 1 November

Light rain. High 66°, low 57°.

Pressure30.27 inHg
Wind8.7 mph SE
Humidity72%
Visibility6.2 mi
Dew point56°
Mon, 0270° / 58°0Overcast
MorningOvercast59°feels 58°
AfternoonOvercast69°feels 69°
EveningMostly clear66°feels 66°
OvernightOvercast58°feels 58°
70 °Overcast

O'Fallon, Monday, 2 November

Overcast. High 70°, low 58°.

Pressure30.06 inHg
Wind10.8 mph SE
Humidity67%
Visibility6.2 mi
Dew point55°
Tue, 0369° / 64°0.35Rain
MorningOvercast64°feels 65°
AfternoonLight rain68°feels 68°
EveningRain64°feels 65°
OvernightOvercast64°feels 64°
69 °Rain

O'Fallon, Tuesday, 3 November

Rain. High 69°, low 64°.

Pressure29.83 inHg
Wind16.1 mph S
Humidity75%
Visibility6.2 mi
Dew point60°
Wed, 0469° / 61°0.34Rain
MorningRain63°feels 64°
AfternoonRain67°feels 66°
EveningRain63°feels 62°
OvernightRain62°feels 61°
69 °Rain

O'Fallon, Wednesday, 4 November

Rain. High 69°, low 61°.

Pressure29.71 inHg
Wind10 mph W
Humidity59%
Visibility—
Dew point52°
Thu, 0573° / 57°0Mostly clear
MorningMostly clear61°feels 60°
AfternoonMostly clear71°feels 69°
EveningMostly clear62°feels 60°
OvernightMostly clear58°feels 57°
73 °Mostly clear

O'Fallon, Thursday, 5 November

Mostly clear. High 73°, low 57°.

Pressure29.94 inHg
Wind7.7 mph S
Humidity41%
Visibility—
Dew point45°
Fri, 0674° / 53°0Partly cloudy
MorningPartly cloudy58°feels 57°
AfternoonPartly cloudy70°feels 69°
EveningPartly cloudy64°feels 63°
OvernightPartly cloudy59°feels 58°
74 °Partly cloudy

O'Fallon, Friday, 6 November

Partly cloudy. High 74°, low 53°.

Pressure29.97 inHg
Wind7.1 mph S
Humidity42%
Visibility—
Dew point45°
Sat, 0772° / 56°0Overcast
MorningOvercast61°feels 59°
AfternoonOvercast70°feels 69°
EveningOvercast65°feels 64°
OvernightOvercast62°feels 61°
72 °Overcast

O'Fallon, Saturday, 7 November

Overcast. High 72°, low 56°.

Pressure30.00 inHg
Wind7.2 mph S
Humidity44%
Visibility—
Dew point46°
Sun, 0876° / 59°0.06Light rain
MorningLight rain64°feels 64°
AfternoonLight rain75°feels 75°
EveningLight rain68°feels 68°
OvernightLight rain65°feels 65°
76 °Light rain

O'Fallon, Sunday, 8 November

Light rain. High 76°, low 59°.

Pressure30.06 inHg
Wind11 mph SE
Humidity56%
Visibility—
Dew point57°

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.