Rock Falls, Sunday, 11 October, 09:20
Clear. Feels like 62°. High 78°, low 55°.
Rock Falls, Monday, 12 October
Partly cloudy. High 83°, low 62°.
Rock Falls, Tuesday, 13 October
Rain. High 79°, low 67°.
Rock Falls, Wednesday, 14 October
Heavy rain. High 71°, low 61°.
Rock Falls, Thursday, 15 October
Rain. High 60°, low 56°.
Rock Falls, Friday, 16 October
Overcast. High 60°, low 48°.
Rock Falls, Saturday, 17 October
Clear. High 44°, low 31°.
Rock Falls, Sunday, 18 October
Partly cloudy. High 52°, low 32°.
Rock Falls, Monday, 19 October
Partly cloudy. High 61°, low 41°.
Rock Falls, Tuesday, 20 October
Overcast. High 64°, low 45°.
Rock Falls, Wednesday, 21 October
Light rain. High 65°, low 50°.
Rock Falls, Thursday, 22 October
Light rain. High 65°, low 54°.
Rock Falls, Friday, 23 October
Light rain. High 68°, low 57°.
Rock Falls, Saturday, 24 October
Mostly clear. High 67°, low 53°.
Rock Falls, Sunday, 25 October
Rain. High 70°, low 51°.
Rock Falls, Monday, 26 October
Partly cloudy. High 50°, low 44°.
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 Falls, 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 Falls, 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.