EN
English Español

As of 00:29 CDT

Weather in O'Fallon, MO

56°Current weather

O'Fallon, Tuesday, 27 October, 00:29

Overcast. Feels like 55°. High 76°, low 52°.

Pressure30.21 inHg
Wind3 mph S
Humidity80%
Visibility6.2 mi
Dew point49°

10-day forecast for O'Fallon, MO: 41° to 79°, with precipitation expected on 6 days. The table below breaks each day into morning, afternoon, evening and overnight.

79°
Best day: Wednesday, October 28
67° · 1 in
Worst day: Sunday, November 1

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

Wed, 2879° / 51°0Clear
MorningClear53°feels 52°
AfternoonClear76°feels 75°
EveningClear66°feels 65°
OvernightClear55°feels 54°
79 °Clear

O'Fallon, Wednesday, 28 October

Clear. High 79°, low 51°.

Pressure30.18 inHg
Wind5.1 mph S
Humidity52%
Visibility6.2 mi
Dew point54°
Thu, 2978° / 58°0.01Light rain
MorningClear59°feels 58°
AfternoonClear78°feels 77°
EveningPartly cloudy68°feels 69°
OvernightClear60°feels 59°
78 °Light rain

O'Fallon, Thursday, 29 October

Light rain. High 78°, low 58°.

Pressure30.12 inHg
Wind5.7 mph SW
Humidity55%
Visibility6.2 mi
Dew point57°
Fri, 3075° / 59°0.01Light rain
MorningOvercast60°feels 60°
AfternoonOvercast74°feels 74°
EveningOvercast69°feels 69°
OvernightOvercast61°feels 61°
75 °Light rain

O'Fallon, Friday, 30 October

Light rain. High 75°, low 59°.

Pressure30.18 inHg
Wind4.8 mph SE
Humidity75%
Visibility6.2 mi
Dew point62°
Sat, 3167° / 61°0.09Light rain
MorningLight rain63°feels 62°
AfternoonLight rain65°feels 65°
EveningLight rain62°feels 62°
OvernightLight rain61°feels 61°
67 °Light rain

O'Fallon, Saturday, 31 October

Light rain. High 67°, low 61°.

Pressure30.12 inHg
Wind5.8 mph SE
Humidity75%
Visibility—
Dew point57°
Sun, 0167° / 58°1Heavy rain
MorningHeavy rain60°feels 60°
AfternoonHeavy rain64°feels 64°
EveningHeavy rain61°feels 61°
OvernightHeavy rain59°feels 59°
67 °Heavy rain

O'Fallon, Sunday, 1 November

Heavy rain. High 67°, low 58°.

Pressure29.94 inHg
Wind7.6 mph N
Humidity81%
Visibility—
Dew point58°
Mon, 0265° / 56°0.25Light rain
MorningLight rain60°feels 59°
AfternoonLight rain65°feels 64°
EveningLight rain63°feels 64°
OvernightLight rain62°feels 63°
65 °Light rain

O'Fallon, Monday, 2 November

Light rain. High 65°, low 56°.

Pressure29.77 inHg
Wind15.9 mph SE
Humidity67%
Visibility—
Dew point53°
Tue, 0366° / 59°0.29Light rain
MorningLight rain63°feels 63°
AfternoonLight rain65°feels 64°
EveningLight rain61°feels 60°
OvernightLight rain60°feels 59°
66 °Light rain

O'Fallon, Tuesday, 3 November

Light rain. High 66°, low 59°.

Pressure29.77 inHg
Wind13.9 mph SE
Humidity65%
Visibility—
Dew point53°
Wed, 0459° / 48°0.76Rain
MorningRain53°feels 49°
AfternoonRain58°feels 56°
EveningRain51°feels 49°
OvernightRain49°feels 43°
59 °Rain

O'Fallon, Wednesday, 4 November

Rain. High 59°, low 48°.

Pressure29.65 inHg
Wind16.4 mph NW
Humidity57%
Visibility—
Dew point43°
Thu, 0549° / 41°0.04Light rain
MorningLight rain45°feels 37°
AfternoonLight rain45°feels 37°
EveningLight rain43°feels 36°
OvernightLight rain42°feels 34°
49 °Light rain

O'Fallon, Thursday, 5 November

Light rain. High 49°, low 41°.

Pressure29.80 inHg
Wind22.3 mph W
Humidity53%
Visibility—
Dew point29°

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.