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As of 15:06 CST

Weather in O'Fallon, IL

72°Current weather

O'Fallon, Tuesday, 10 November, 15:06

Clear. Feels like 71°. High 72°, low 44°.

Pressure30.06 inHg
Wind6.9 mph W
Humidity47%
Visibility6.2 mi
Dew point52°

10-day forecast for O'Fallon, IL: 31° to 72°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

72°
Best day: Tuesday, November 10
45°
Worst day: Friday, November 13

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

Wed, 1168° / 45°0Overcast
MorningClear57°feels 56°
AfternoonMostly clear67°feels 66°
EveningClear51°feels 49°
OvernightPartly cloudy47°feels 45°
68 °Overcast

O'Fallon, Wednesday, 11 November

Overcast. High 68°, low 45°.

Pressure29.80 inHg
Wind12 mph W
Humidity67%
Visibility6.2 mi
Dew point53°
Thu, 1250° / 42°0Overcast
MorningClear46°feels 42°
AfternoonOvercast49°feels 44°
EveningOvercast44°feels 39°
OvernightClear48°feels 44°
50 °Overcast

O'Fallon, Thursday, 12 November

Overcast. High 50°, low 42°.

Pressure29.97 inHg
Wind12.8 mph NW
Humidity52%
Visibility6.2 mi
Dew point33°
Fri, 1345° / 35°0Partly cloudy
MorningOvercast39°feels 33°
AfternoonOvercast44°feels 39°
EveningClear37°feels 34°
OvernightClear39°feels 33°
45 °Partly cloudy

O'Fallon, Friday, 13 November

Partly cloudy. High 45°, low 35°.

Pressure30.12 inHg
Wind11.4 mph NW
Humidity56%
Visibility6.2 mi
Dew point21°
Sat, 1447° / 31°0Clear
MorningClear36°feels 36°
AfternoonPartly cloudy47°feels 47°
EveningClear39°feels 36°
OvernightClear33°feels 33°
47 °Clear

O'Fallon, Saturday, 14 November

Clear. High 47°, low 31°.

Pressure30.24 inHg
Wind0.9 mph W
Humidity56%
Visibility6.2 mi
Dew point27°
Sun, 1551° / 33°0Overcast
MorningOvercast39°feels 35°
AfternoonOvercast48°feels 46°
EveningOvercast43°feels 39°
OvernightOvercast39°feels 35°
51 °Overcast

O'Fallon, Sunday, 15 November

Overcast. High 51°, low 33°.

Pressure30.36 inHg
Wind6.6 mph SE
Humidity50%
Visibility—
Dew point30°
Mon, 1653° / 34°0Overcast
MorningOvercast39°feels 34°
AfternoonOvercast49°feels 46°
EveningOvercast42°feels 38°
OvernightOvercast38°feels 34°
53 °Overcast

O'Fallon, Monday, 16 November

Overcast. High 53°, low 34°.

Pressure30.50 inHg
Wind8.6 mph E
Humidity41%
Visibility—
Dew point26°
Tue, 1754° / 34°0Clear
MorningClear39°feels 35°
AfternoonClear51°feels 47°
EveningClear43°feels 39°
OvernightClear39°feels 34°
54 °Clear

O'Fallon, Tuesday, 17 November

Clear. High 54°, low 34°.

Pressure30.45 inHg
Wind6.4 mph SE
Humidity40%
Visibility—
Dew point26°
Wed, 1857° / 34°0Clear
MorningClear40°feels 35°
AfternoonClear53°feels 49°
EveningClear45°feels 41°
OvernightClear41°feels 36°
57 °Clear

O'Fallon, Wednesday, 18 November

Clear. High 57°, low 34°.

Pressure30.36 inHg
Wind8.9 mph SE
Humidity37%
Visibility—
Dew point26°
Thu, 1960° / 38°0Overcast
MorningOvercast44°feels 40°
AfternoonOvercast57°feels 54°
EveningOvercast51°feels 48°
OvernightOvercast46°feels 43°
60 °Overcast

O'Fallon, Thursday, 19 November

Overcast. High 60°, low 38°.

Pressure30.30 inHg
Wind10.2 mph S
Humidity36%
Visibility—
Dew point29°

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.