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As of 07:34 CDT

Weather in O'Fallon, IL

59°Current weather

O'Fallon, Friday, 30 October, 07:34

Mostly clear. Feels like 59°. High 77°, low 58°.

Pressure30.24 inHg
Wind3.4 mph NE
Humidity92%
Visibility6.2 mi
Dew point56°

Two-week outlook for O'Fallon, IL: week one averages a high of 69.9° and week two 65.9°, so week two runs 4° cooler than week one. Around 1.8 inches of precipitation are expected over the 14 days, across 3 wet days. The nearest weekend, October 31: 73°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (October 30 – November 5)69.9°59.3°1.0 in / 2 d—
2nd (November 6 – November 12)65.9°50°0.9 in / 1 d—

Weekend weather

Sat, October 31
Overcast
73°58°
no precip.
Sun, November 1
Rain
69°60°
0.3 in
Sat, November 7
Overcast
67°48°
no precip.
Sun, November 8
Light rain
66°53°
0.02 in
Sat, 3173° / 58°0Overcast
73 °Overcast

O'Fallon, Saturday, 31 October

Overcast. High 73°, low 58°.

Pressure30.27 inHg
Wind4.5 mph SE
Humidity46%
Visibility6.2 mi
Dew point47°
Sun, 0169° / 60°0.3Rain
69 °Rain

O'Fallon, Sunday, 1 November

Rain. High 69°, low 60°.

Pressure30.27 inHg
Wind9.8 mph SE
Humidity88%
Visibility6.2 mi
Dew point59°
Mon, 0268° / 59°0Overcast
68 °Overcast

O'Fallon, Monday, 2 November

Overcast. High 68°, low 59°.

Pressure30.09 inHg
Wind12.3 mph S
Humidity75%
Visibility6.2 mi
Dew point58°
Tue, 0370° / 66°0.65Rain
70 °Rain

O'Fallon, Tuesday, 3 November

Rain. High 70°, low 66°.

Pressure29.80 inHg
Wind16.3 mph S
Humidity81%
Visibility—
Dew point64°
Wed, 0465° / 59°0.02Light rain
65 °Light rain

O'Fallon, Wednesday, 4 November

Light rain. High 65°, low 59°.

Pressure29.77 inHg
Wind10.6 mph NW
Humidity80%
Visibility—
Dew point57°
Thu, 0566° / 56°0Light rain
66 °Light rain

O'Fallon, Thursday, 5 November

Light rain. High 66°, low 56°.

Pressure29.68 inHg
Wind11.2 mph NW
Humidity69%
Visibility—
Dew point55°
Fri, 0665° / 49°0Partly cloudy
65 °Partly cloudy

O'Fallon, Friday, 6 November

Partly cloudy. High 65°, low 49°.

Pressure30.06 inHg
Wind7.5 mph NW
Humidity53%
Visibility—
Dew point44°
Sat, 0767° / 48°0Overcast
67 °Overcast

O'Fallon, Saturday, 7 November

Overcast. High 67°, low 48°.

Pressure30.24 inHg
Wind7.7 mph S
Humidity46%
Visibility—
Dew point41°
Sun, 0866° / 53°0.02Light rain
66 °Light rain

O'Fallon, Sunday, 8 November

Light rain. High 66°, low 53°.

Pressure30.21 inHg
Wind13.7 mph NW
Humidity38%
Visibility—
Dew point39°
Mon, 0966° / 47°0Clear
66 °Clear

O'Fallon, Monday, 9 November

Clear. High 66°, low 47°.

Pressure30.21 inHg
Wind5.2 mph N
Humidity48%
Visibility—
Dew point42°
Tue, 1066° / 49°0Overcast
66 °Overcast

O'Fallon, Tuesday, 10 November

Overcast. High 66°, low 49°.

Pressure30.00 inHg
Wind9.4 mph S
Humidity41%
Visibility—
Dew point39°
Wed, 1161° / 53°0.85Rain
61 °Rain

O'Fallon, Wednesday, 11 November

Rain. High 61°, low 53°.

Pressure29.62 inHg
Wind18.9 mph S
Humidity92%
Visibility—
Dew point52°
Thu, 1270° / 51°0Clear
70 °Clear

O'Fallon, Thursday, 12 November

Clear. High 70°, low 51°.

Pressure29.53 inHg
Wind18.1 mph SW
Humidity49%
Visibility—
Dew point46°

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.