Old Du Quoin, Sunday, 9 August, 06:37
Clear. Feels like 70°. High 93°, low 69°.
Old Du Quoin, Monday, 10 August
Clear. High 97°, low 76°.
Old Du Quoin, Tuesday, 11 August
Mostly clear. High 101°, low 76°.
Old Du Quoin, Wednesday, 12 August
Light rain. High 100°, low 73°.
Old Du Quoin, Thursday, 13 August
Light rain. High 94°, low 71°.
Old Du Quoin, Friday, 14 August
Rain. High 81°, low 69°.
Old Du Quoin, Saturday, 15 August
Light rain. High 94°, low 66°.
Old Du Quoin, Sunday, 16 August
Partly cloudy. High 96°, low 71°.
Old Du Quoin, Monday, 17 August
Light rain. High 90°, low 72°.
Old Du Quoin, Tuesday, 18 August
Light rain. High 95°, low 69°.
Old Du Quoin, Wednesday, 19 August
Light rain. High 102°, low 75°.
Old Du Quoin, Thursday, 20 August
Partly cloudy. High 114°, low 82°.
Old Du Quoin, Friday, 21 August
Clear. High 110°, low 83°.
Old Du Quoin, Saturday, 22 August
Mostly clear. High 113°, low 80°.
Old Du Quoin, Sunday, 23 August
Rain. High 108°, low 78°.
Old Du Quoin, Monday, 24 August
Light rain. High 100°, low 75°.
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 Old Du Quoin, 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 Old Du Quoin, 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.