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As of 06:44 CDT

Weather in O'Fallon, MO

53°Current weather

O'Fallon, Wednesday, 28 October, 06:44

Partly cloudy. Feels like 52°. High 78°, low 52°.

Pressure30.21 inHg
Wind2 mph E
Humidity86%
Visibility6.2 mi
Dew point49°

10-day forecast for O'Fallon, MO: 42° to 80°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.

80°
Best day: Thursday, October 29
55° · 1.54 in
Worst day: Thursday, November 5

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

Thu, 2980° / 53°0Clear
MorningClear54°feels 53°
AfternoonClear77°feels 77°
EveningClear68°feels 68°
OvernightClear55°feels 54°
80 °Clear

O'Fallon, Thursday, 29 October

Clear. High 80°, low 53°.

Pressure30.15 inHg
Wind6.3 mph SW
Humidity56%
Visibility6.2 mi
Dew point58°
Fri, 3075° / 58°0Overcast
MorningPartly cloudy58°feels 59°
AfternoonOvercast74°feels 74°
EveningOvercast69°feels 69°
OvernightOvercast60°feels 60°
75 °Overcast

O'Fallon, Friday, 30 October

Overcast. High 75°, low 58°.

Pressure30.21 inHg
Wind6.6 mph SE
Humidity70%
Visibility6.2 mi
Dew point61°
Sat, 3172° / 60°0Overcast
MorningOvercast61°feels 61°
AfternoonOvercast70°feels 70°
EveningOvercast65°feels 65°
OvernightOvercast64°feels 64°
72 °Overcast

O'Fallon, Saturday, 31 October

Overcast. High 72°, low 60°.

Pressure30.24 inHg
Wind5.3 mph E
Humidity72%
Visibility6.2 mi
Dew point58°
Sun, 0175° / 59°0Overcast
MorningOvercast63°feels 63°
AfternoonOvercast72°feels 72°
EveningOvercast68°feels 68°
OvernightOvercast62°feels 61°
75 °Overcast

O'Fallon, Sunday, 1 November

Overcast. High 75°, low 59°.

Pressure30.24 inHg
Wind8.2 mph SE
Humidity58%
Visibility—
Dew point56°
Mon, 0272° / 61°0.89Heavy rain
MorningHeavy rain64°feels 64°
AfternoonHeavy rain71°feels 71°
EveningHeavy rain67°feels 67°
OvernightHeavy rain65°feels 65°
72 °Heavy rain

O'Fallon, Monday, 2 November

Heavy rain. High 72°, low 61°.

Pressure30.03 inHg
Wind13.7 mph S
Humidity58%
Visibility—
Dew point55°
Tue, 0365° / 52°0.33Rain
MorningRain56°feels 55°
AfternoonRain58°feels 56°
EveningRain54°feels 51°
OvernightRain52°feels 50°
65 °Rain

O'Fallon, Tuesday, 3 November

Rain. High 65°, low 52°.

Pressure29.71 inHg
Wind14.2 mph SE
Humidity62%
Visibility—
Dew point45°
Wed, 0456° / 48°0.38Rain
MorningRain51°feels 49°
AfternoonRain56°feels 56°
EveningRain54°feels 53°
OvernightRain52°feels 51°
56 °Rain

O'Fallon, Wednesday, 4 November

Rain. High 56°, low 48°.

Pressure29.77 inHg
Wind12.7 mph NW
Humidity93%
Visibility—
Dew point53°
Thu, 0555° / 50°1.54Rain
MorningRain53°feels 52°
AfternoonRain54°feels 54°
EveningRain53°feels 53°
OvernightRain52°feels 51°
55 °Rain

O'Fallon, Thursday, 5 November

Rain. High 55°, low 50°.

Pressure29.62 inHg
Wind20.2 mph NW
Humidity93%
Visibility—
Dew point52°
Fri, 0651° / 42°0Clear
MorningClear44°feels 39°
AfternoonClear49°feels 46°
EveningClear44°feels 41°
OvernightClear42°feels 38°
51 °Clear

O'Fallon, Friday, 6 November

Clear. High 51°, low 42°.

Pressure30.15 inHg
Wind15.3 mph N
Humidity50%
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.