Spring Valley, Friday, 9 October, 06:46
Overcast. Feels like 52°. High 77°, low 53°.
Spring Valley, Saturday, 10 October
Overcast. High 79°, low 59°.
Spring Valley, Sunday, 11 October
Clear. High 74°, low 58°.
Spring Valley, Monday, 12 October
Light rain. High 84°, low 60°.
Spring Valley, Tuesday, 13 October
Light rain. High 83°, low 65°.
Spring Valley, Wednesday, 14 October
Rain. High 74°, low 62°.
Spring Valley, Thursday, 15 October
Rain. High 72°, low 58°.
Spring Valley, Friday, 16 October
Partly cloudy. High 57°, low 46°.
Spring Valley, Saturday, 17 October
Overcast. High 47°, low 42°.
Spring Valley, Sunday, 18 October
Clear. High 55°, low 38°.
Spring Valley, Monday, 19 October
Overcast. High 60°, low 42°.
Spring Valley, Tuesday, 20 October
Clear. High 63°, low 44°.
Spring Valley, Wednesday, 21 October
Clear. High 66°, low 46°.
Spring Valley, Thursday, 22 October
Clear. High 67°, low 48°.
Spring Valley, Friday, 23 October
Clear. High 66°, low 47°.
Spring Valley, Saturday, 24 October
Clear. High 67°, low 48°.
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 Spring Valley, 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 Spring Valley, 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.