As of 13:26 EDT

Weather in Collinsville, OH

65°

Collinsville, Monday, 19 October, 13:26

Clear. Feels like 64°. High 67°, low 37°.

Pressure30.42 inHg

Wind0 mph N

Humidity50%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

Tue, 2071° / 40°

71 °

Collinsville, Tuesday, 20 October

Clear. High 71°, low 40°.

Pressure30.39 inHg

Wind5.4 mph E

Humidity50%

Visibility6.2 mi

Dew point43°

Wed, 2168° / 42°

68 °

Collinsville, Wednesday, 21 October

Clear. High 68°, low 42°.

Pressure30.30 inHg

Wind0.5 mph N

Humidity58%

Visibility6.2 mi

Dew point48°

Thu, 2265° / 47°

65 °

Collinsville, Thursday, 22 October

Clear. High 65°, low 47°.

Pressure30.27 inHg

Wind6.2 mph NE

Humidity63%

Visibility6.2 mi

Dew point49°

Fri, 2360° / 42°

60 °

Collinsville, Friday, 23 October

Clear. High 60°, low 42°.

Pressure30.39 inHg

Wind7 mph E

Humidity65%

Visibility6.2 mi

Dew point43°

Sat, 2461° / 38°

61 °

Collinsville, Saturday, 24 October

Mostly clear. High 61°, low 38°.

Pressure30.47 inHg

Wind6.4 mph E

Humidity42%

Visibility—

Dew point33°

Sun, 2570° / 46°

70 °

Collinsville, Sunday, 25 October

Overcast. High 70°, low 46°.

Pressure30.36 inHg

Wind8.1 mph SW

Humidity39%

Visibility—

Dew point41°

Mon, 2668° / 54°

68 °

Collinsville, Monday, 26 October

Overcast. High 68°, low 54°.

Pressure30.27 inHg

Wind5.7 mph SW

Humidity43%

Visibility—

Dew point43°

Tue, 2769° / 52°

69 °

Collinsville, Tuesday, 27 October

Overcast. High 69°, low 52°.

Pressure30.06 inHg

Wind13.7 mph SW

Humidity44%

Visibility—

Dew point43°

Wed, 2855° / 33°

0.16

55 °

Collinsville, Wednesday, 28 October

Snow. High 55°, low 33°.

Pressure30.18 inHg

Wind16.7 mph NW

Humidity39%

Visibility—

Dew point22°

Thu, 2949° / 28°

49 °

Collinsville, Thursday, 29 October

Clear. High 49°, low 28°.

Pressure30.27 inHg

Wind10.1 mph W

Humidity26%

Visibility—

Dew point12°

Fri, 3054° / 33°

54 °

Collinsville, Friday, 30 October

Overcast. High 54°, low 33°.

Pressure30.12 inHg

Wind11.5 mph SW

Humidity22%

Visibility—

Dew point13°

Sat, 3149° / 46°

0.1

49 °

Collinsville, Saturday, 31 October

Light rain. High 49°, low 46°.

Pressure30.21 inHg

Wind7.5 mph SW

Humidity72%

Visibility—

Dew point38°

Sun, 0156° / 46°

0.5

56 °

Collinsville, Sunday, 1 November

Rain. High 56°, low 46°.

Pressure29.94 inHg

Wind8 mph S

Humidity96%

Visibility—

Dew point51°

Mon, 0253° / 42°

0.03

53 °

Collinsville, Monday, 2 November

Light rain. High 53°, low 42°.

Pressure29.94 inHg

Wind19.9 mph W

Humidity91%

Visibility—

Dew point40°

Tue, 0351° / 39°

51 °

Collinsville, Tuesday, 3 November

Overcast. High 51°, low 39°.

Pressure29.91 inHg

Wind12.4 mph NW

Humidity59%

Visibility—

Dew point36°

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.