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As of 01:06 EDT

Weather in Collinsville, OH

75°Current weather

Collinsville, Sunday, 9 August, 01:06

Clear. Feels like 77°. High 89°, low 71°.

Pressure30.03 inHg
Wind3.8 mph NW
Humidity95%
Visibility6.2 mi
Dew point73°
Mon, 1090° / 74°0.06Light rain
90 °Light rain

Collinsville, Monday, 10 August

Light rain. High 90°, low 74°.

Pressure30.03 inHg
Wind12.6 mph W
Humidity66%
Visibility6.2 mi
Dew point72°
Tue, 1187° / 67°2.22Heavy rain
87 °Heavy rain

Collinsville, Tuesday, 11 August

Heavy rain. High 87°, low 67°.

Pressure29.94 inHg
Wind19.5 mph S
Humidity92%
Visibility6.2 mi
Dew point70°
Wed, 1285° / 71°0.27Light rain
85 °Light rain

Collinsville, Wednesday, 12 August

Light rain. High 85°, low 71°.

Pressure29.80 inHg
Wind7 mph W
Humidity77%
Visibility6.2 mi
Dew point74°
Thu, 1378° / 63°0.04Light rain
78 °Light rain

Collinsville, Thursday, 13 August

Light rain. High 78°, low 63°.

Pressure30.00 inHg
Wind10.1 mph NE
Humidity60%
Visibility—
Dew point61°
Fri, 1475° / 64°0.02Light rain
75 °Light rain

Collinsville, Friday, 14 August

Light rain. High 75°, low 64°.

Pressure30.12 inHg
Wind6.5 mph NE
Humidity79%
Visibility—
Dew point61°
Sat, 1577° / 58°0Overcast
77 °Overcast

Collinsville, Saturday, 15 August

Overcast. High 77°, low 58°.

Pressure30.24 inHg
Wind5.1 mph NE
Humidity55%
Visibility—
Dew point58°
Sun, 1674° / 64°0.01Light rain
74 °Light rain

Collinsville, Sunday, 16 August

Light rain. High 74°, low 64°.

Pressure30.15 inHg
Wind7.7 mph E
Humidity64%
Visibility—
Dew point60°
Mon, 1773° / 65°0.08Light rain
73 °Light rain

Collinsville, Monday, 17 August

Light rain. High 73°, low 65°.

Pressure30.06 inHg
Wind7.3 mph N
Humidity90%
Visibility—
Dew point66°
Tue, 1881° / 63°0Partly cloudy
81 °Partly cloudy

Collinsville, Tuesday, 18 August

Partly cloudy. High 81°, low 63°.

Pressure30.00 inHg
Wind4.8 mph E
Humidity65%
Visibility—
Dew point65°
Wed, 1984° / 65°0.07Light rain
84 °Light rain

Collinsville, Wednesday, 19 August

Light rain. High 84°, low 65°.

Pressure29.88 inHg
Wind10.9 mph W
Humidity62%
Visibility—
Dew point67°
Thu, 2069° / 56°0.02Light rain
69 °Light rain

Collinsville, Thursday, 20 August

Light rain. High 69°, low 56°.

Pressure30.00 inHg
Wind12.1 mph NW
Humidity73%
Visibility—
Dew point55°
Fri, 2173° / 54°0Partly cloudy
73 °Partly cloudy

Collinsville, Friday, 21 August

Partly cloudy. High 73°, low 54°.

Pressure30.06 inHg
Wind7.1 mph NE
Humidity58%
Visibility—
Dew point54°
Sat, 2280° / 54°0.02Light rain
80 °Light rain

Collinsville, Saturday, 22 August

Light rain. High 80°, low 54°.

Pressure29.94 inHg
Wind10.2 mph S
Humidity58%
Visibility—
Dew point57°
Sun, 2387° / 70°0.02Light rain
87 °Light rain

Collinsville, Sunday, 23 August

Light rain. High 87°, low 70°.

Pressure29.94 inHg
Wind10.2 mph W
Humidity55%
Visibility—
Dew point66°
Mon, 2483° / 67°0Overcast
83 °Overcast

Collinsville, Monday, 24 August

Overcast. High 83°, low 67°.

Pressure30.03 inHg
Wind4.8 mph NW
Humidity56%
Visibility—
Dew point64°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Collinsville, OH are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Collinsville, OH since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.