As of 02:40 CDT

Weather in Post Oak, IL

67°

Post Oak, Monday, 12 October, 02:40

Clear. Feels like 67°. High 90°, low 64°.

Pressure29.94 inHg

Wind8.1 mph SW

Humidity81%

Visibility6.2 mi

Dew point61°

See detailed hourly forecast

Tue, 1389° / 66°

89 °

Post Oak, Tuesday, 13 October

Clear. High 89°, low 66°.

Pressure29.91 inHg

Wind8.9 mph SW

Humidity50%

Visibility6.2 mi

Dew point64°

Wed, 1483° / 70°

0.24

83 °

Post Oak, Wednesday, 14 October

Rain. High 83°, low 70°.

Pressure30.00 inHg

Wind1.3 mph SW

Humidity68%

Visibility6.2 mi

Dew point69°

Thu, 1578° / 69°

0.75

78 °

Post Oak, Thursday, 15 October

Rain. High 78°, low 69°.

Pressure30.03 inHg

Wind7.9 mph SW

Humidity95%

Visibility4.2 mi

Dew point73°

Fri, 1671° / 52°

0.02

71 °

Post Oak, Friday, 16 October

Light rain. High 71°, low 52°.

Pressure30.36 inHg

Wind18.6 mph NW

Humidity42%

Visibility—

Dew point37°

Sat, 1760° / 43°

60 °

Post Oak, Saturday, 17 October

Clear. High 60°, low 43°.

Pressure30.50 inHg

Wind7.7 mph SE

Humidity42%

Visibility—

Dew point34°

Sun, 1865° / 36°

65 °

Post Oak, Sunday, 18 October

Clear. High 65°, low 36°.

Pressure30.45 inHg

Wind12.1 mph S

Humidity19%

Visibility—

Dew point16°

Mon, 1971° / 47°

71 °

Post Oak, Monday, 19 October

Overcast. High 71°, low 47°.

Pressure30.33 inHg

Wind13.2 mph S

Humidity41%

Visibility—

Dew point42°

Tue, 2078° / 55°

78 °

Post Oak, Tuesday, 20 October

Overcast. High 78°, low 55°.

Pressure30.18 inHg

Wind12.3 mph S

Humidity52%

Visibility—

Dew point52°

Wed, 2181° / 61°

0.02

81 °

Post Oak, Wednesday, 21 October

Light rain. High 81°, low 61°.

Pressure30.00 inHg

Wind18.8 mph S

Humidity46%

Visibility—

Dew point56°

Thu, 2270° / 54°

0.83

70 °

Post Oak, Thursday, 22 October

Heavy rain. High 70°, low 54°.

Pressure29.83 inHg

Wind22.4 mph S

Humidity53%

Visibility—

Dew point47°

Fri, 2356° / 46°

56 °

Post Oak, Friday, 23 October

Clear. High 56°, low 46°.

Pressure30.03 inHg

Wind17.8 mph NW

Humidity40%

Visibility—

Dew point31°

Sat, 2458° / 38°

58 °

Post Oak, Saturday, 24 October

Clear. High 58°, low 38°.

Pressure30.15 inHg

Wind7.3 mph NW

Humidity35%

Visibility—

Dew point26°

Sun, 2562° / 49°

62 °

Post Oak, Sunday, 25 October

Overcast. High 62°, low 49°.

Pressure29.74 inHg

Wind15.9 mph S

Humidity37%

Visibility—

Dew point34°

Mon, 2662° / 46°

62 °

Post Oak, Monday, 26 October

Overcast. High 62°, low 46°.

Pressure30.00 inHg

Wind11 mph N

Humidity51%

Visibility—

Dew point40°

Tue, 2759° / 47°

59 °

Post Oak, Tuesday, 27 October

Clear. High 59°, low 47°.

Pressure30.03 inHg

Wind12.5 mph NW

Humidity41%

Visibility—

Dew point34°

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 Post Oak, IL 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 Post Oak, IL 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.