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As of 19:21 CST

Weather in O'Fallon, MO

65°Current weather

O'Fallon, Tuesday, 3 November, 19:21

Light rain. Feels like 66°. High 69°, low 63°.

Pressure29.74 inHg
Wind9.2 mph SW
Humidity93%
Visibility6.0 mi
Dew point63°

10-day forecast for O'Fallon, MO: 37° to 69°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

67°
Best day: Tuesday, November 10
69° · 0.46 in
Worst day: Tuesday, November 3

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

Wed, 0461° / 54°0Overcast
MorningOvercast57°feels 55°
AfternoonOvercast58°feels 56°
EveningOvercast55°feels 53°
OvernightOvercast58°feels 57°
61 °Overcast

O'Fallon, Wednesday, 4 November

Overcast. High 61°, low 54°.

Pressure29.83 inHg
Wind12.7 mph W
Humidity62%
Visibility6.2 mi
Dew point46°
Thu, 0562° / 48°0Clear
MorningClear51°feels 49°
AfternoonClear62°feels 61°
EveningOvercast52°feels 50°
OvernightClear50°feels 49°
62 °Clear

O'Fallon, Thursday, 5 November

Clear. High 62°, low 48°.

Pressure29.88 inHg
Wind9.8 mph W
Humidity51%
Visibility6.2 mi
Dew point43°
Fri, 0655° / 48°0Overcast
MorningOvercast52°feels 50°
AfternoonOvercast54°feels 52°
EveningOvercast49°feels 48°
OvernightOvercast51°feels 50°
55 °Overcast

O'Fallon, Friday, 6 November

Overcast. High 55°, low 48°.

Pressure30.12 inHg
Wind9.6 mph N
Humidity59%
Visibility6.2 mi
Dew point41°
Sat, 0752° / 37°0Overcast
MorningOvercast42°feels 42°
AfternoonPartly cloudy51°feels 48°
EveningOvercast45°feels 45°
OvernightPartly cloudy41°feels 40°
52 °Overcast

O'Fallon, Saturday, 7 November

Overcast. High 52°, low 37°.

Pressure30.21 inHg
Wind2.9 mph W
Humidity54%
Visibility6.2 mi
Dew point34°
Sun, 0857° / 43°0.01Light rain
MorningLight rain47°feels 47°
AfternoonLight rain55°feels 53°
EveningLight rain49°feels 48°
OvernightLight rain45°feels 44°
57 °Light rain

O'Fallon, Sunday, 8 November

Light rain. High 57°, low 43°.

Pressure30.24 inHg
Wind5.7 mph NW
Humidity56%
Visibility—
Dew point39°
Mon, 0967° / 41°0Clear
MorningClear48°feels 44°
AfternoonClear62°feels 60°
EveningClear54°feels 51°
OvernightClear49°feels 46°
67 °Clear

O'Fallon, Monday, 9 November

Clear. High 67°, low 41°.

Pressure30.18 inHg
Wind9 mph SW
Humidity39%
Visibility—
Dew point35°
Tue, 1067° / 49°0Overcast
MorningOvercast54°feels 51°
AfternoonOvercast64°feels 63°
EveningOvercast57°feels 56°
OvernightOvercast53°feels 51°
67 °Overcast

O'Fallon, Tuesday, 10 November

Overcast. High 67°, low 49°.

Pressure30.12 inHg
Wind9.4 mph SW
Humidity52%
Visibility—
Dew point45°
Wed, 1157° / 52°0.19Light rain
MorningLight rain55°feels 54°
AfternoonLight rain56°feels 55°
EveningLight rain53°feels 53°
OvernightLight rain53°feels 52°
57 °Light rain

O'Fallon, Wednesday, 11 November

Light rain. High 57°, low 52°.

Pressure30.06 inHg
Wind4.3 mph E
Humidity72%
Visibility—
Dew point47°
Thu, 1255° / 52°0.01Light rain
MorningLight rain53°feels 52°
AfternoonLight rain55°feels 54°
EveningLight rain53°feels 52°
OvernightLight rain52°feels 51°
55 °Light rain

O'Fallon, Thursday, 12 November

Light rain. High 55°, low 52°.

Pressure30.00 inHg
Wind8.7 mph NE
Humidity91%
Visibility—
Dew point52°

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.