Weather in Jefferson, WI
Jefferson, Wednesday, 14 October, 06:49
Overcast. Feels like 55°. High 70°, low 56°.
Monthly outlook for Jefferson, WI: average high 57°, average low 39.7°. That is 0.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 5 days and 1.3 inches. The warmest day looks like 14 October (69.8°), the coolest 26 October (28.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 October – 23 October | 60.4° | 57.6° | +1.5° |
| 24 October – 2 November | 51.4° | 53.8° | -1.3° |
| 3 November – 12 November | at normal | 48.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Fort Atkinson (6 mi).
0.18
Jefferson, Thursday, 15 October
Rain. High 66°, low 55°.
0.22Jefferson, Friday, 16 October
Rain. High 54°, low 43°.
0
Jefferson, Saturday, 17 October
Clear. High 55°, low 35°.
0Jefferson, Sunday, 18 October
Clear. High 60°, low 43°.
0Jefferson, Monday, 19 October
Overcast. High 62°, low 43°.
0Jefferson, Tuesday, 20 October
Clear. High 65°, low 44°.
0
Jefferson, Wednesday, 21 October
Partly cloudy. High 67°, low 47°.
0Jefferson, Thursday, 22 October
Clear. High 51°, low 36°.
0Jefferson, Friday, 23 October
Clear. High 53°, low 32°.
0Jefferson, Saturday, 24 October
Overcast. High 55°, low 36°.
0.14Jefferson, Sunday, 25 October
Light rain. High 47°, low 36°.
0
Jefferson, Monday, 26 October
Mostly clear. High 49°, low 29°.
0Jefferson, Tuesday, 27 October
Clear. High 50°, low 32°.
0Jefferson, Wednesday, 28 October
Clear. High 53°, low 32°.
0Jefferson, Thursday, 29 October
Clear. High 55°, low 35°.
0.09Jefferson, Friday, 30 October
Climate normal for this date — 60-year average.
0.09
Jefferson, Saturday, 31 October
Climate normal for this date — 60-year average.
0.19Jefferson, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Jefferson, Monday, 2 November
Climate normal for this date — 60-year average.
0.05Jefferson, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.08Jefferson, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.1Jefferson, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Jefferson, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Jefferson, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Jefferson, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Jefferson, Monday, 9 November
Climate normal for this date — 60-year average.
0.09Jefferson, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Jefferson, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Jefferson, Thursday, 12 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 Jefferson, WI 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 Jefferson, WI 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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