EN
English Español

As of 12:03 CST

Weather in O'Fallon, MO

57°Current weather

O'Fallon, Wednesday, 4 November, 12:03

Overcast. Feels like 56°. High 61°, low 53°.

Pressure29.80 inHg
Wind12.7 mph W
Humidity77%
Visibility6.2 mi
Dew point50°

10-day forecast for O'Fallon, MO: 36° to 66°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.

66°
Best day: Monday, November 9
52°
Worst day: Saturday, November 7

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

Thu, 0562° / 47°0Clear
MorningClear50°feels 49°
AfternoonMostly clear62°feels 60°
EveningOvercast56°feels 54°
OvernightClear50°feels 47°
62 °Clear

O'Fallon, Thursday, 5 November

Clear. High 62°, low 47°.

Pressure29.88 inHg
Wind9.6 mph W
Humidity52%
Visibility6.2 mi
Dew point43°
Fri, 0654° / 40°0Overcast
MorningOvercast51°feels 49°
AfternoonOvercast54°feels 51°
EveningClear44°feels 41°
OvernightOvercast50°feels 49°
54 °Overcast

O'Fallon, Friday, 6 November

Overcast. High 54°, low 40°.

Pressure30.18 inHg
Wind8.8 mph N
Humidity62%
Visibility6.2 mi
Dew point40°
Sat, 0752° / 36°0Overcast
MorningClear40°feels 38°
AfternoonOvercast52°feels 50°
EveningPartly cloudy43°feels 43°
OvernightClear38°feels 36°
52 °Overcast

O'Fallon, Saturday, 7 November

Overcast. High 52°, low 36°.

Pressure30.30 inHg
Wind2.7 mph NW
Humidity53%
Visibility6.2 mi
Dew point34°
Sun, 0862° / 37°0Clear
MorningClear44°feels 41°
AfternoonClear57°feels 56°
EveningClear52°feels 51°
OvernightClear38°feels 35°
62 °Clear

O'Fallon, Sunday, 8 November

Clear. High 62°, low 37°.

Pressure30.21 inHg
Wind6.1 mph SW
Humidity56%
Visibility6.2 mi
Dew point43°
Mon, 0966° / 43°0Clear
MorningClear49°feels 48°
AfternoonClear62°feels 61°
EveningClear54°feels 53°
OvernightClear49°feels 48°
66 °Clear

O'Fallon, Monday, 9 November

Clear. High 66°, low 43°.

Pressure30.21 inHg
Wind4.3 mph W
Humidity65%
Visibility—
Dew point48°
Tue, 1065° / 42°0Clear
MorningClear47°feels 44°
AfternoonClear61°feels 58°
EveningClear53°feels 50°
OvernightClear47°feels 43°
65 °Clear

O'Fallon, Tuesday, 10 November

Clear. High 65°, low 42°.

Pressure30.09 inHg
Wind7.8 mph NW
Humidity36%
Visibility—
Dew point32°
Wed, 1159° / 40°0Overcast
MorningOvercast45°feels 42°
AfternoonOvercast56°feels 53°
EveningOvercast50°feels 47°
OvernightOvercast47°feels 44°
59 °Overcast

O'Fallon, Wednesday, 11 November

Overcast. High 59°, low 40°.

Pressure30.21 inHg
Wind6.5 mph NE
Humidity37%
Visibility—
Dew point29°
Thu, 1257° / 44°0Overcast
MorningOvercast47°feels 45°
AfternoonOvercast55°feels 52°
EveningOvercast47°feels 45°
OvernightOvercast44°feels 42°
57 °Overcast

O'Fallon, Thursday, 12 November

Overcast. High 57°, low 44°.

Pressure30.21 inHg
Wind5.9 mph NE
Humidity46%
Visibility—
Dew point34°
Fri, 1360° / 39°0Clear
MorningClear44°feels 41°
AfternoonClear56°feels 53°
EveningClear49°feels 46°
OvernightClear44°feels 41°
60 °Clear

O'Fallon, Friday, 13 November

Clear. High 60°, low 39°.

Pressure30.21 inHg
Wind7.5 mph NW
Humidity40%
Visibility—
Dew point31°

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.