Weather in Janesville, IA
Janesville, Friday, 13 November, 09:36
Clear. Feels like 25°. High 39°, low 25°.
Monthly outlook for Janesville, IA: average high 42.1°, average low 28.6°. That is 0.4° below the climate normal for November. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 19 November (56.5°), the coolest 24 November (16°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 November – 22 November | 49.3° | 44.9° | +2.4° |
| 23 November – 2 December | 30° | 38.4° | -4.6° |
| 3 December – 12 December | at normal | 32.6° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — New Hartford (10 mi).
0Janesville, Saturday, 14 November
Clear. High 41°, low 23°.
0Janesville, Sunday, 15 November
Clear. High 46°, low 26°.
0Janesville, Monday, 16 November
Clear. High 50°, low 30°.
0Janesville, Tuesday, 17 November
Clear. High 55°, low 36°.
0
Janesville, Wednesday, 18 November
Overcast. High 56°, low 42°.
0
Janesville, Thursday, 19 November
Partly cloudy. High 56°, low 46°.
0Janesville, Friday, 20 November
Overcast. High 52°, low 41°.
0.29
Janesville, Saturday, 21 November
Rain. High 56°, low 44°.
0Janesville, Sunday, 22 November
Partly cloudy. High 40°, low 29°.
0Janesville, Monday, 23 November
Overcast. High 29°, low 20°.
0Janesville, Tuesday, 24 November
Partly cloudy. High 25°, low 16°.
0Janesville, Wednesday, 25 November
Partly cloudy. High 28°, low 19°.
0Janesville, Thursday, 26 November
Overcast. High 36°, low 21°.
0Janesville, Friday, 27 November
Overcast. High 29°, low 21°.
0Janesville, Saturday, 28 November
Overcast. High 34°, low 19°.
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.
0.04
Janesville, 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.
0.04Janesville, Thursday, 10 December
Climate normal for this date — 60-year average.
0.06Janesville, Friday, 11 December
Climate normal for this date — 60-year average.
0.04Janesville, Saturday, 12 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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