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As of 03:07 CDT

Weather in Collinsville, IL

74°Current weather

Collinsville, Sunday, 9 August, 03:07

Partly cloudy. Feels like 75°. High 97°, low 73°.

Pressure30.00 inHg
Wind1 mph SE
Humidity90%
Visibility6.2 mi
Dew point71°

Two-week outlook for Collinsville, IL: week one averages a high of 91.2° and week two 98.9°, so week two runs 7.7° warmer than week one. Around 0.8 inches of precipitation are expected over the 14 days, across 6 wet days. The nearest weekend, August 9: 97°, dry.

Week one vs week two

WeekHighLowPrecipitationVs normal
1st (August 9 – August 15)91.2°70.4°0.7 in / 6 d—
2nd (August 16 – August 22)98.9°75.2°0.0 in / 0 d—

Weekend weather

Sun, August 9
Mostly clear
97°73°
no precip.
Sat, August 15
Light rain
87°66°
0.08 in
Sun, August 16
Overcast
89°70°
no precip.
Sat, August 22
Clear
107°79°
no precip.
Mon, 10100° / 70°0.11Rain
100 °Rain

Collinsville, Monday, 10 August

Rain. High 100°, low 70°.

Pressure29.94 inHg
Wind12 mph SW
Humidity46%
Visibility6.2 mi
Dew point71°
Tue, 11101° / 71°0.04Light rain
101 °Light rain

Collinsville, Tuesday, 11 August

Light rain. High 101°, low 71°.

Pressure29.88 inHg
Wind11.5 mph SW
Humidity44%
Visibility6.2 mi
Dew point70°
Wed, 1296° / 76°0.05Light rain
96 °Light rain

Collinsville, Wednesday, 12 August

Light rain. High 96°, low 76°.

Pressure29.83 inHg
Wind9.7 mph NW
Humidity52%
Visibility6.2 mi
Dew point71°
Thu, 1385° / 71°0.28Rain
85 °Rain

Collinsville, Thursday, 13 August

Rain. High 85°, low 71°.

Pressure29.91 inHg
Wind15.1 mph E
Humidity70%
Visibility—
Dew point72°
Fri, 1474° / 66°0.17Light rain
74 °Light rain

Collinsville, Friday, 14 August

Light rain. High 74°, low 66°.

Pressure30.06 inHg
Wind14.2 mph E
Humidity83%
Visibility—
Dew point65°
Sat, 1587° / 66°0.08Light rain
87 °Light rain

Collinsville, Saturday, 15 August

Light rain. High 87°, low 66°.

Pressure30.12 inHg
Wind11.4 mph SE
Humidity76%
Visibility—
Dew point69°
Sun, 1689° / 70°0Overcast
89 °Overcast

Collinsville, Sunday, 16 August

Overcast. High 89°, low 70°.

Pressure30.03 inHg
Wind10.1 mph SE
Humidity65%
Visibility—
Dew point72°
Mon, 1786° / 72°0.02Light rain
86 °Light rain

Collinsville, Monday, 17 August

Light rain. High 86°, low 72°.

Pressure30.06 inHg
Wind6.6 mph NE
Humidity63%
Visibility—
Dew point69°
Tue, 1891° / 68°0.01Light rain
91 °Light rain

Collinsville, Tuesday, 18 August

Light rain. High 91°, low 68°.

Pressure29.97 inHg
Wind10.5 mph E
Humidity57%
Visibility—
Dew point68°
Wed, 19104° / 77°0Partly cloudy
104 °Partly cloudy

Collinsville, Wednesday, 19 August

Partly cloudy. High 104°, low 77°.

Pressure29.88 inHg
Wind11.7 mph S
Humidity37%
Visibility—
Dew point66°
Thu, 20114° / 80°0Clear
114 °Clear

Collinsville, Thursday, 20 August

Clear. High 114°, low 80°.

Pressure29.83 inHg
Wind12.7 mph SW
Humidity20%
Visibility—
Dew point56°
Fri, 21101° / 81°0Clear
101 °Clear

Collinsville, Friday, 21 August

Clear. High 101°, low 81°.

Pressure29.85 inHg
Wind10.2 mph NW
Humidity29%
Visibility—
Dew point60°
Sat, 22107° / 79°0Clear
107 °Clear

Collinsville, Saturday, 22 August

Clear. High 107°, low 79°.

Pressure29.85 inHg
Wind9.6 mph SE
Humidity30%
Visibility—
Dew point62°

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 Collinsville, 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.