Weather in Janesville, IL
Janesville, Sunday, 9 August, 00:01
Clear. Feels like 79°. High 92°, low 72°.
0.04
Janesville, Monday, 10 August
Light rain. High 90°, low 75°.
0.02Janesville, Tuesday, 11 August
Light rain. High 91°, low 74°.
0.73Janesville, Wednesday, 12 August
Heavy rain. High 86°, low 69°.
2.8Janesville, Thursday, 13 August
Heavy rain. High 82°, low 67°.
0.09Janesville, Friday, 14 August
Light rain. High 75°, low 66°.
0.02Janesville, Saturday, 15 August
Light rain. High 69°, low 62°.
0.14Janesville, Sunday, 16 August
Light rain. High 72°, low 61°.
0.06Janesville, Monday, 17 August
Light rain. High 77°, low 65°.
0
Janesville, Tuesday, 18 August
Overcast. High 82°, low 65°.
0Janesville, Wednesday, 19 August
Overcast. High 82°, low 65°.
0.01Janesville, Thursday, 20 August
Light rain. High 73°, low 55°.
0Janesville, Friday, 21 August
Overcast. High 72°, low 54°.
0.04Janesville, Saturday, 22 August
Light rain. High 81°, low 60°.
0
Janesville, Sunday, 23 August
Clear. High 87°, low 68°.
0Janesville, Monday, 24 August
Overcast. High 84°, low 68°.
About the monthly outlook
How accurate is a 30-day forecast?
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 Janesville, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
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.
Where do the 66-year records come from?
They are real temperature extremes recorded in Janesville, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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