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As of 19:02 CST

Weather in O'Fallon, IL

41°Current weather

O'Fallon, Saturday, 7 November, 19:02

Clear. Feels like 41°. High 54°, low 33°.

Pressure30.21 inHg
Wind0.5 mph SE
Humidity85%
Visibility6.2 mi
Dew point37°

10-day forecast for O'Fallon, IL: 31° to 66°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

66°
Best day: Monday, November 16
46°
Worst day: Friday, November 13

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

Sun, 0865° / 35°0Clear
MorningClear44°feels 40°
AfternoonClear65°feels 64°
EveningClear56°feels 55°
OvernightClear36°feels 33°
65 °Clear

O'Fallon, Sunday, 8 November

Clear. High 65°, low 35°.

Pressure30.15 inHg
Wind5.4 mph W
Humidity63%
Visibility6.2 mi
Dew point45°
Mon, 0963° / 42°0Clear
MorningOvercast45°feels 45°
AfternoonClear63°feels 61°
EveningClear52°feels 51°
OvernightClear44°feels 42°
63 °Clear

O'Fallon, Monday, 9 November

Clear. High 63°, low 42°.

Pressure30.21 inHg
Wind2.9 mph SW
Humidity59%
Visibility6.2 mi
Dew point46°
Tue, 1066° / 48°0Clear
MorningClear51°feels 50°
AfternoonClear66°feels 65°
EveningClear55°feels 55°
OvernightClear50°feels 49°
66 °Clear

O'Fallon, Tuesday, 10 November

Clear. High 66°, low 48°.

Pressure30.09 inHg
Wind4.4 mph W
Humidity65%
Visibility6.2 mi
Dew point52°
Wed, 1166° / 48°0.04Light rain
MorningOvercast53°feels 53°
AfternoonLight rain65°feels 64°
EveningLight rain57°feels 56°
OvernightPartly cloudy49°feels 49°
66 °Light rain

O'Fallon, Wednesday, 11 November

Light rain. High 66°, low 48°.

Pressure29.85 inHg
Wind7.6 mph W
Humidity71%
Visibility6.2 mi
Dew point56°
Thu, 1252° / 44°0Light rain
MorningLight rain48°feels 44°
AfternoonLight rain51°feels 48°
EveningLight rain46°feels 41°
OvernightLight rain44°feels 40°
52 °Light rain

O'Fallon, Thursday, 12 November

Light rain. High 52°, low 44°.

Pressure29.97 inHg
Wind14.5 mph NW
Humidity54%
Visibility—
Dew point35°
Fri, 1346° / 34°0Partly cloudy
MorningPartly cloudy40°feels 33°
AfternoonPartly cloudy44°feels 38°
EveningPartly cloudy36°feels 31°
OvernightPartly cloudy35°feels 28°
46 °Partly cloudy

O'Fallon, Friday, 13 November

Partly cloudy. High 46°, low 34°.

Pressure30.09 inHg
Wind13.1 mph N
Humidity43%
Visibility—
Dew point23°
Sat, 1452° / 31°0Partly cloudy
MorningPartly cloudy36°feels 32°
AfternoonPartly cloudy47°feels 44°
EveningPartly cloudy43°feels 39°
OvernightPartly cloudy39°feels 34°
52 °Partly cloudy

O'Fallon, Saturday, 14 November

Partly cloudy. High 52°, low 31°.

Pressure30.09 inHg
Wind7.5 mph S
Humidity26%
Visibility—
Dew point13°
Sun, 1566° / 40°0Clear
MorningClear47°feels 43°
AfternoonClear61°feels 59°
EveningClear55°feels 53°
OvernightClear49°feels 47°
66 °Clear

O'Fallon, Sunday, 15 November

Clear. High 66°, low 40°.

Pressure30.03 inHg
Wind10.2 mph W
Humidity45%
Visibility—
Dew point38°
Mon, 1666° / 48°0Overcast
MorningOvercast53°feels 52°
AfternoonOvercast64°feels 62°
EveningOvercast56°feels 54°
OvernightOvercast57°feels 55°
66 °Overcast

O'Fallon, Monday, 16 November

Overcast. High 66°, low 48°.

Pressure30.12 inHg
Wind10.8 mph S
Humidity42%
Visibility—
Dew point40°

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, IL 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.