Weather in Janesville, IA
Janesville, Wednesday, 28 October, 02:40
Partly cloudy. Feels like 49°. High 70°, low 50°.
Monthly outlook for Janesville, IA: average high 54.3°, average low 43.9°. That is 1.8° above the climate normal for October. Precipitation is expected on 9 days (about 4.7 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 28 October (69.8°), the coolest 12 November (25.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 59.1° | 52.8° | +3.5° |
| 7 November – 16 November | 46.2° | 47.2° | -0.5° |
| 17 November – 26 November | at normal | 42.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — New Hartford (10 mi).
0.04
Janesville, Thursday, 29 October
Light rain. High 63°, low 47°.
0.66Janesville, Friday, 30 October
Heavy rain. High 54°, low 44°.
0.93Janesville, Saturday, 31 October
Heavy rain. High 65°, low 51°.
0
Janesville, Sunday, 1 November
Overcast. High 68°, low 53°.
0.13Janesville, Monday, 2 November
Light rain. High 59°, low 55°.
0.53Janesville, Tuesday, 3 November
Rain. High 57°, low 53°.
0.03Janesville, Wednesday, 4 November
Light rain. High 52°, low 50°.
0.02Janesville, Thursday, 5 November
Light rain. High 54°, low 50°.
0.29Janesville, Friday, 6 November
Light rain. High 49°, low 46°.
0.01Janesville, Saturday, 7 November
Light rain. High 46°, low 37°.
0
Janesville, Sunday, 8 November
Clear. High 46°, low 32°.
0Janesville, Monday, 9 November
Overcast. High 54°, low 38°.
0.75Janesville, Tuesday, 10 November
Rain. High 54°, low 37°.
0.89
Janesville, Wednesday, 11 November
Snow. High 43°, low 33°.
0
Janesville, Thursday, 12 November
Partly cloudy. High 34°, low 25°.
0.06Janesville, Friday, 13 November
Climate normal for this date — 60-year average.
0.03
Janesville, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Janesville, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Janesville, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Janesville, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Janesville, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Janesville, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Janesville, Friday, 20 November
Climate normal for this date — 60-year average.
0.06Janesville, Saturday, 21 November
Climate normal for this date — 60-year average.
0.02Janesville, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Janesville, Monday, 23 November
Climate normal for this date — 60-year average.
0.04Janesville, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.04Janesville, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.07
Janesville, Thursday, 26 November
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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