Weather in Janesville, IA
Janesville, Tuesday, 27 October, 09:53
Overcast. Feels like 51°. High 64°, low 51°.
Monthly outlook for Janesville, IA: average high 57.4°, average low 46.7°. That is 3.2° above the climate normal for October. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 28 October (70.5°), the coolest 11 November (33.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 60° | 53.3° | +3.7° |
| 6 November – 15 November | 53.1° | 47.6° | +3° |
| 16 November – 25 November | at normal | 43.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — New Hartford (10 mi).
0.07
Janesville, Wednesday, 28 October
Light rain. High 71°, low 52°.
0.38Janesville, Thursday, 29 October
Heavy rain. High 64°, low 48°.
0.27Janesville, Friday, 30 October
Rain. High 58°, low 44°.
0.03Janesville, Saturday, 31 October
Light rain. High 63°, low 52°.
0Janesville, Sunday, 1 November
Overcast. High 67°, low 56°.
0.16Janesville, Monday, 2 November
Light rain. High 56°, low 54°.
0.13Janesville, Tuesday, 3 November
Light rain. High 55°, low 52°.
0.03Janesville, Wednesday, 4 November
Light rain. High 54°, low 48°.
0.32Janesville, Thursday, 5 November
Light rain. High 48°, low 45°.
0.02Janesville, Friday, 6 November
Light rain. High 55°, low 45°.
0
Janesville, Saturday, 7 November
Mostly clear. High 55°, low 40°.
0Janesville, Sunday, 8 November
Overcast. High 57°, low 42°.
0.1Janesville, Monday, 9 November
Light rain. High 59°, low 48°.
0Janesville, Tuesday, 10 November
Overcast. High 47°, low 37°.
0Janesville, Wednesday, 11 November
Overcast. High 46°, low 33°.
0.06
Janesville, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Janesville, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Janesville, 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.
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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