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As of 19:17 CST

Weather in O'Fallon, MO

45°Current weather

O'Fallon, Thursday, 12 November, 19:17

Overcast. Feels like 38°. High 50°, low 43°.

Pressure30.06 inHg
Wind15 mph N
Humidity58%
Visibility6.2 mi
Dew point31°

10-day forecast for O'Fallon, MO: 31° to 71°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.

71°
Best day: Saturday, November 21
48°
Worst day: Friday, November 13

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

Fri, 1348° / 35°0Overcast
MorningOvercast40°feels 34°
AfternoonOvercast47°feels 42°
EveningOvercast41°feels 37°
OvernightOvercast37°feels 30°
48 °Overcast

O'Fallon, Friday, 13 November

Overcast. High 48°, low 35°.

Pressure30.15 inHg
Wind10.6 mph N
Humidity62%
Visibility6.2 mi
Dew point24°
Sat, 1449° / 33°0Clear
MorningClear37°feels 34°
AfternoonClear46°feels 46°
EveningClear37°feels 37°
OvernightClear34°feels 31°
49 °Clear

O'Fallon, Saturday, 14 November

Clear. High 49°, low 33°.

Pressure30.36 inHg
Wind1.7 mph N
Humidity57%
Visibility6.2 mi
Dew point26°
Sun, 1549° / 32°0Overcast
MorningOvercast36°feels 36°
AfternoonPartly cloudy49°feels 49°
EveningClear39°feels 39°
OvernightClear34°feels 34°
49 °Overcast

O'Fallon, Sunday, 15 November

Overcast. High 49°, low 32°.

Pressure30.45 inHg
Wind1.4 mph E
Humidity52%
Visibility6.2 mi
Dew point30°
Mon, 1652° / 31°0Clear
MorningClear38°feels 38°
AfternoonClear52°feels 49°
EveningClear43°feels 40°
OvernightClear35°feels 35°
52 °Clear

O'Fallon, Monday, 16 November

Clear. High 52°, low 31°.

Pressure30.50 inHg
Wind2.7 mph SE
Humidity47%
Visibility6.2 mi
Dew point31°
Tue, 1754° / 33°0Clear
MorningClear39°feels 36°
AfternoonClear52°feels 49°
EveningClear45°feels 42°
OvernightClear41°feels 37°
54 °Clear

O'Fallon, Tuesday, 17 November

Clear. High 54°, low 33°.

Pressure30.45 inHg
Wind6.6 mph SE
Humidity54%
Visibility—
Dew point34°
Wed, 1865° / 38°0Partly cloudy
MorningPartly cloudy45°feels 41°
AfternoonPartly cloudy61°feels 58°
EveningPartly cloudy56°feels 53°
OvernightPartly cloudy52°feels 48°
65 °Partly cloudy

O'Fallon, Wednesday, 18 November

Partly cloudy. High 65°, low 38°.

Pressure30.27 inHg
Wind12.3 mph S
Humidity38%
Visibility—
Dew point33°
Thu, 1967° / 54°0.02Light rain
MorningLight rain58°feels 55°
AfternoonLight rain66°feels 64°
EveningLight rain61°feels 59°
OvernightLight rain58°feels 56°
67 °Light rain

O'Fallon, Thursday, 19 November

Light rain. High 67°, low 54°.

Pressure30.21 inHg
Wind12.2 mph SW
Humidity36%
Visibility—
Dew point37°
Fri, 2067° / 54°0.05Light rain
MorningLight rain56°feels 54°
AfternoonLight rain61°feels 59°
EveningLight rain58°feels 56°
OvernightLight rain55°feels 53°
67 °Light rain

O'Fallon, Friday, 20 November

Light rain. High 67°, low 54°.

Pressure30.30 inHg
Wind7.5 mph S
Humidity44%
Visibility—
Dew point38°
Sat, 2171° / 51°0Overcast
MorningOvercast56°feels 54°
AfternoonOvercast67°feels 66°
EveningOvercast60°feels 58°
OvernightOvercast56°feels 55°
71 °Overcast

O'Fallon, Saturday, 21 November

Overcast. High 71°, low 51°.

Pressure30.18 inHg
Wind12.2 mph S
Humidity45%
Visibility—
Dew point44°

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.