Rock, Friday, 9 October, 23:07
Clear. Feels like 51°. High 87°, low 52°.
Rock, Saturday, 10 October
Light rain. High 72°, low 53°.
Rock, Sunday, 11 October
Clear. High 79°, low 52°.
Rock, Monday, 12 October
Clear. High 85°, low 61°.
Rock, Tuesday, 13 October
Clear. High 86°, low 65°.
Rock, Wednesday, 14 October
Rain. High 79°, low 70°.
Rock, Thursday, 15 October
Rain. High 75°, low 65°.
Rock, Friday, 16 October
Heavy rain. High 71°, low 58°.
Rock, Saturday, 17 October
Overcast. High 52°, low 41°.
Rock, Sunday, 18 October
Clear. High 55°, low 34°.
Rock, Monday, 19 October
Mostly clear. High 62°, low 37°.
Rock, Tuesday, 20 October
Overcast. High 67°, low 46°.
Rock, Wednesday, 21 October
Rain. High 63°, low 50°.
Rock, Thursday, 22 October
Heavy rain. High 63°, low 56°.
Rock, Friday, 23 October
Clear. High 68°, low 50°.
Rock, Saturday, 24 October
Overcast. High 62°, 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 Rock, 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 Rock, 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.