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As of 07:12 CST

Weather in O'Fallon, IL

28°Current weather

O'Fallon, Saturday, 14 November, 07:12

Clear. Feels like 28°. High 46°, low 28°.

Pressure30.27 inHg
Wind0 mph N
Humidity87%
Visibility6.2 mi
Dew point26°

Two-week outlook for O'Fallon, IL: week one averages a high of 56.3° and week two 52.8°, so week two runs 3.5° cooler than week one. Around 0.1 inches of precipitation are expected over the 14 days, across 2 wet days. The nearest weekend, November 14: 46°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (November 14 – November 20)56.3°36.1°0.0 in / 0 d—
2nd (November 21 – November 27)52.8°37.1°0.1 in / 2 d—

Weekend weather

Sat, November 14
Clear
46°28°
no precip.
Sun, November 15
Partly cloudy
53°28°
no precip.
Sat, November 21
Light rain
69°50°
no precip.
Sun, November 22
Clear
54°44°
no precip.
Sun, 1553° / 28°0Partly cloudy
53 °Partly cloudy

O'Fallon, Sunday, 15 November

Partly cloudy. High 53°, low 28°.

Pressure30.47 inHg
Wind0.2 mph SE
Humidity51%
Visibility6.2 mi
Dew point32°
Mon, 1653° / 33°0Clear
53 °Clear

O'Fallon, Monday, 16 November

Clear. High 53°, low 33°.

Pressure30.53 inHg
Wind2.3 mph SW
Humidity49%
Visibility6.2 mi
Dew point33°
Tue, 1755° / 35°0Clear
55 °Clear

O'Fallon, Tuesday, 17 November

Clear. High 55°, low 35°.

Pressure30.50 inHg
Wind5.2 mph S
Humidity52%
Visibility6.2 mi
Dew point36°
Wed, 1859° / 39°0Overcast
59 °Overcast

O'Fallon, Wednesday, 18 November

Overcast. High 59°, low 39°.

Pressure30.36 inHg
Wind9.6 mph SE
Humidity51%
Visibility—
Dew point37°
Thu, 1961° / 47°0Overcast
61 °Overcast

O'Fallon, Thursday, 19 November

Overcast. High 61°, low 47°.

Pressure30.30 inHg
Wind9.7 mph S
Humidity67%
Visibility—
Dew point47°
Fri, 2066° / 44°0Partly cloudy
66 °Partly cloudy

O'Fallon, Friday, 20 November

Partly cloudy. High 66°, low 44°.

Pressure30.30 inHg
Wind7.9 mph SE
Humidity36%
Visibility—
Dew point34°
Sat, 2169° / 50°0.01Light rain
69 °Light rain

O'Fallon, Saturday, 21 November

Light rain. High 69°, low 50°.

Pressure30.06 inHg
Wind18.6 mph S
Humidity50%
Visibility—
Dew point46°
Sun, 2254° / 44°0Clear
54 °Clear

O'Fallon, Sunday, 22 November

Clear. High 54°, low 44°.

Pressure30.18 inHg
Wind15.3 mph W
Humidity42%
Visibility—
Dew point28°
Mon, 2352° / 37°0Mostly clear
52 °Mostly clear

O'Fallon, Monday, 23 November

Mostly clear. High 52°, low 37°.

Pressure30.21 inHg
Wind14.2 mph W
Humidity23%
Visibility—
Dew point12°
Tue, 2450° / 31°0Clear
50 °Clear

O'Fallon, Tuesday, 24 November

Clear. High 50°, low 31°.

Pressure30.27 inHg
Wind5.7 mph N
Humidity37%
Visibility—
Dew point20°
Wed, 2557° / 39°0.04Light rain
57 °Light rain

O'Fallon, Wednesday, 25 November

Light rain. High 57°, low 39°.

Pressure30.21 inHg
Wind11.8 mph N
Humidity36%
Visibility—
Dew point28°
Thu, 2643° / 29°0.08Snow
43 °Snow

O'Fallon, Thursday, 26 November

Snow. High 43°, low 29°.

Pressure30.45 inHg
Wind12.7 mph N
Humidity44%
Visibility—
Dew point19°
Fri, 2745° / 29°0Overcast
45 °Overcast

O'Fallon, Friday, 27 November

Overcast. High 45°, low 29°.

Pressure30.18 inHg
Wind12 mph NE
Humidity39%
Visibility—
Dew point17°

About this forecast

Can I plan a trip on a 2-week forecast?

Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.

What does the "Vs normal" column mean?

It is the gap between the forecast and the climate normal for those same dates in O'Fallon, IL, computed over 60 years. A positive value means the week runs warmer than usual.

Why are weekends shown separately?

Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.