EN
English Español

As of 17:01 CST

Weather in O'Fallon, MO

47°Current weather

O'Fallon, Sunday, 15 November, 17:01

Clear. Feels like 47°. High 51°, low 26°.

Pressure30.45 inHg
Wind2 mph E
Humidity56%
Visibility6.2 mi
Dew point32°

10-day forecast for O'Fallon, MO: 26° to 69°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

69°
Best day: Saturday, November 21
48° · 0.28 in
Worst day: Tuesday, November 24

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

Mon, 1656° / 27°0Clear
MorningClear35°feels 33°
AfternoonClear56°feels 53°
EveningClear35°feels 31°
OvernightClear29°feels 29°
56 °Clear

O'Fallon, Monday, 16 November

Clear. High 56°, low 27°.

Pressure30.53 inHg
Wind2.9 mph S
Humidity52%
Visibility6.2 mi
Dew point35°
Tue, 1756° / 28°0Clear
MorningClear37°feels 33°
AfternoonClear56°feels 54°
EveningClear46°feels 41°
OvernightClear30°feels 25°
56 °Clear

O'Fallon, Tuesday, 17 November

Clear. High 56°, low 28°.

Pressure30.50 inHg
Wind5.6 mph S
Humidity57%
Visibility6.2 mi
Dew point39°
Wed, 1861° / 39°0Overcast
MorningPartly cloudy42°feels 37°
AfternoonOvercast61°feels 59°
EveningOvercast50°feels 46°
OvernightClear41°feels 37°
61 °Overcast

O'Fallon, Wednesday, 18 November

Overcast. High 61°, low 39°.

Pressure30.36 inHg
Wind8.1 mph S
Humidity50%
Visibility6.2 mi
Dew point40°
Thu, 1966° / 46°0Clear
MorningOvercast52°feels 50°
AfternoonClear65°feels 64°
EveningClear56°feels 55°
OvernightPartly cloudy46°feels 42°
66 °Clear

O'Fallon, Thursday, 19 November

Clear. High 66°, low 46°.

Pressure30.30 inHg
Wind8.7 mph SW
Humidity61%
Visibility6.2 mi
Dew point50°
Fri, 2069° / 51°0Clear
MorningClear57°feels 56°
AfternoonClear65°feels 64°
EveningClear60°feels 59°
OvernightClear56°feels 55°
69 °Clear

O'Fallon, Friday, 20 November

Clear. High 69°, low 51°.

Pressure30.21 inHg
Wind10.3 mph S
Humidity57%
Visibility—
Dew point49°
Sat, 2169° / 51°0Clear
MorningClear56°feels 55°
AfternoonClear67°feels 65°
EveningClear55°feels 54°
OvernightClear53°feels 51°
69 °Clear

O'Fallon, Saturday, 21 November

Clear. High 69°, low 51°.

Pressure29.94 inHg
Wind13.7 mph S
Humidity34%
Visibility—
Dew point37°
Sun, 2259° / 41°0Partly cloudy
MorningPartly cloudy46°feels 42°
AfternoonPartly cloudy56°feels 53°
EveningPartly cloudy48°feels 45°
OvernightPartly cloudy44°feels 40°
59 °Partly cloudy

O'Fallon, Sunday, 22 November

Partly cloudy. High 59°, low 41°.

Pressure30.15 inHg
Wind8.4 mph NW
Humidity37%
Visibility—
Dew point29°
Mon, 2355° / 37°0Overcast
MorningOvercast41°feels 37°
AfternoonOvercast52°feels 49°
EveningOvercast46°feels 42°
OvernightOvercast42°feels 37°
55 °Overcast

O'Fallon, Monday, 23 November

Overcast. High 55°, low 37°.

Pressure30.24 inHg
Wind9.9 mph E
Humidity44%
Visibility—
Dew point29°
Tue, 2448° / 39°0.28Rain
MorningRain42°feels 38°
AfternoonRain47°feels 44°
EveningRain45°feels 40°
OvernightRain45°feels 41°
48 °Rain

O'Fallon, Tuesday, 24 November

Rain. High 48°, low 39°.

Pressure30.15 inHg
Wind9.5 mph E
Humidity56%
Visibility—
Dew point32°

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.