Post Oak, Saturday, 10 October, 11:30
Overcast. Feels like 74°. High 77°, low 56°.
Post Oak, Sunday, 11 October
Clear. High 82°, low 50°.
Post Oak, Monday, 12 October
Clear. High 88°, low 58°.
Post Oak, Tuesday, 13 October
Clear. High 90°, low 68°.
Post Oak, Wednesday, 14 October
Light rain. High 78°, low 68°.
Post Oak, Thursday, 15 October
Rain. High 65°, low 57°.
Post Oak, Friday, 16 October
Light rain. High 64°, low 46°.
Post Oak, Saturday, 17 October
Overcast. High 43°, low 35°.
Post Oak, Sunday, 18 October
Clear. High 52°, low 29°.
Post Oak, Monday, 19 October
Partly cloudy. High 60°, low 35°.
Post Oak, Tuesday, 20 October
Partly cloudy. High 65°, low 40°.
Post Oak, Wednesday, 21 October
Rain. High 59°, low 49°.
Post Oak, Thursday, 22 October
Clear. High 68°, low 44°.
Post Oak, Friday, 23 October
Clear. High 68°, low 49°.
Post Oak, Saturday, 24 October
Light rain. High 69°, low 47°.
Post Oak, Sunday, 25 October
Light rain. High 65°, low 51°.
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.
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.
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.
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.