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As of 02:22 CST

Weather in O'Fallon, MO

50°Current weather

O'Fallon, Wednesday, 11 November, 02:22

Clear. Feels like 50°. High 70°, low 46°.

Pressure29.97 inHg
Wind1 mph SW
Humidity84%
Visibility6.2 mi
Dew point45°

10-day forecast for O'Fallon, MO: 28° to 70°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.

70°
Best day: Wednesday, November 11
57° · 0.39 in
Worst day: Friday, November 20

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

Thu, 1253° / 40°0Overcast
MorningMostly clear48°feels 44°
AfternoonOvercast47°feels 41°
EveningOvercast42°feels 36°
OvernightClear47°feels 43°
53 °Overcast

O'Fallon, Thursday, 12 November

Overcast. High 53°, low 40°.

Pressure30.03 inHg
Wind13.6 mph NW
Humidity55%
Visibility6.2 mi
Dew point31°
Fri, 1344° / 33°0Overcast
MorningPartly cloudy38°feels 32°
AfternoonOvercast44°feels 38°
EveningClear36°feels 32°
OvernightClear36°feels 31°
44 °Overcast

O'Fallon, Friday, 13 November

Overcast. High 44°, low 33°.

Pressure30.15 inHg
Wind11.4 mph N
Humidity61%
Visibility6.2 mi
Dew point24°
Sat, 1446° / 28°0Clear
MorningClear34°feels 34°
AfternoonPartly cloudy45°feels 45°
EveningOvercast38°feels 38°
OvernightClear31°feels 28°
46 °Clear

O'Fallon, Saturday, 14 November

Clear. High 46°, low 28°.

Pressure30.27 inHg
Wind1.5 mph NW
Humidity57%
Visibility6.2 mi
Dew point26°
Sun, 1550° / 32°0Overcast
MorningOvercast37°feels 36°
AfternoonOvercast47°feels 45°
EveningOvercast41°feels 39°
OvernightOvercast33°feels 33°
50 °Overcast

O'Fallon, Sunday, 15 November

Overcast. High 50°, low 32°.

Pressure30.39 inHg
Wind5 mph SE
Humidity51%
Visibility—
Dew point29°
Mon, 1652° / 33°0Mostly clear
MorningMostly clear38°feels 37°
AfternoonMostly clear50°feels 47°
EveningMostly clear43°feels 41°
OvernightMostly clear40°feels 37°
52 °Mostly clear

O'Fallon, Monday, 16 November

Mostly clear. High 52°, low 33°.

Pressure30.45 inHg
Wind5.4 mph SE
Humidity49%
Visibility—
Dew point30°
Tue, 1754° / 36°0Clear
MorningClear40°feels 39°
AfternoonClear51°feels 48°
EveningClear45°feels 42°
OvernightClear42°feels 39°
54 °Clear

O'Fallon, Tuesday, 17 November

Clear. High 54°, low 36°.

Pressure30.36 inHg
Wind5.9 mph SE
Humidity38%
Visibility—
Dew point25°
Wed, 1857° / 37°0Clear
MorningClear42°feels 38°
AfternoonClear54°feels 50°
EveningClear49°feels 45°
OvernightClear47°feels 43°
57 °Clear

O'Fallon, Wednesday, 18 November

Clear. High 57°, low 37°.

Pressure30.24 inHg
Wind11.2 mph SE
Humidity36%
Visibility—
Dew point26°
Thu, 1962° / 48°0.05Light rain
MorningLight rain52°feels 48°
AfternoonLight rain59°feels 58°
EveningLight rain55°feels 53°
OvernightLight rain51°feels 49°
62 °Light rain

O'Fallon, Thursday, 19 November

Light rain. High 62°, low 48°.

Pressure30.03 inHg
Wind11.3 mph S
Humidity53%
Visibility—
Dew point41°
Fri, 2057° / 52°0.39Light rain
MorningLight rain55°feels 54°
AfternoonLight rain56°feels 55°
EveningLight rain57°feels 56°
OvernightLight rain55°feels 55°
57 °Light rain

O'Fallon, Friday, 20 November

Light rain. High 57°, low 52°.

Pressure29.91 inHg
Wind12.8 mph S
Humidity66%
Visibility—
Dew point45°

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.