Weather in Janesville, IA
Janesville, Tuesday, 10 November, 13:57
Clear. Feels like 60°. High 62°, low 37°.
Monthly outlook for Janesville, IA: average high 46.5°, average low 35°. That is 1.2° above the climate normal for November. Precipitation is expected on 6 days (about 1.4 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 10 November (62.3°), the coolest 25 November (24.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 November – 19 November | 48.4° | 45.9° | +1.4° |
| 20 November – 29 November | 43.4° | 40.1° | +1.8° |
| 30 November – 9 December | at normal | 34.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — New Hartford (10 mi).
0.12
Janesville, Wednesday, 11 November
Light rain. High 56°, low 40°.
0Janesville, Thursday, 12 November
Light rain. High 42°, low 35°.
0Janesville, Friday, 13 November
Clear. High 40°, low 26°.
0Janesville, Saturday, 14 November
Clear. High 43°, low 25°.
0Janesville, Sunday, 15 November
Clear. High 45°, low 28°.
0Janesville, Monday, 16 November
Clear. High 46°, low 31°.
0Janesville, Tuesday, 17 November
Clear. High 48°, low 33°.
0
Janesville, Wednesday, 18 November
Partly cloudy. High 50°, low 35°.
0.13Janesville, Thursday, 19 November
Light rain. High 51°, low 46°.
0.37Janesville, Friday, 20 November
Rain. High 51°, low 49°.
0.46Janesville, Saturday, 21 November
Rain. High 50°, low 46°.
0.28Janesville, Sunday, 22 November
Rain. High 50°, low 41°.
0.04
Janesville, Monday, 23 November
Snow. High 42°, low 35°.
0.01Janesville, Tuesday, 24 November
Light snow. High 36°, low 27°.
0
Janesville, Wednesday, 25 November
Mostly clear. High 31°, low 24°.
0.07
Janesville, Thursday, 26 November
Climate normal for this date — 60-year average.
0.09Janesville, Friday, 27 November
Climate normal for this date — 60-year average.
0.07Janesville, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Janesville, Sunday, 29 November
Climate normal for this date — 60-year average.
0.06Janesville, Monday, 30 November
Climate normal for this date — 60-year average.
0.08Janesville, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.04Janesville, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.07Janesville, Thursday, 3 December
Climate normal for this date — 60-year average.
0.04Janesville, Friday, 4 December
Climate normal for this date — 60-year average.
0.06Janesville, Saturday, 5 December
Climate normal for this date — 60-year average.
0.04Janesville, Sunday, 6 December
Climate normal for this date — 60-year average.
0.07Janesville, Monday, 7 December
Climate normal for this date — 60-year average.
0.05Janesville, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.06Janesville, Wednesday, 9 December
Climate normal for this date — 60-year average.
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, IA 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, IA 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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