Weather in Sun Prairie, WI
Sun Prairie, Monday, 19 October, 14:05
Overcast. Feels like 64°. High 65°, low 40°.
Monthly outlook for Sun Prairie, WI: average high 55.5°, average low 37.9°. That is 1° above the climate normal for October. Precipitation is expected on 3 days (about 1.7 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 21 October (66.4°), the coolest 29 October (26.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 60.4° | 54.9° | +3.1° |
| 29 October – 7 November | 47.3° | 50.5° | -1.7° |
| 8 November – 17 November | at normal | 44.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Windsor (5 mi).
0
Sun Prairie, Tuesday, 20 October
Clear. High 66°, low 42°.
0Sun Prairie, Wednesday, 21 October
Clear. High 66°, low 44°.
0
Sun Prairie, Thursday, 22 October
Partly cloudy. High 65°, low 47°.
0Sun Prairie, Friday, 23 October
Partly cloudy. High 62°, low 45°.
0Sun Prairie, Saturday, 24 October
Overcast. High 63°, low 48°.
0Sun Prairie, Sunday, 25 October
Overcast. High 64°, low 49°.
0.13
Sun Prairie, Monday, 26 October
Light rain. High 59°, low 42°.
1.11Sun Prairie, Tuesday, 27 October
Rain. High 55°, low 36°.
0Sun Prairie, Wednesday, 28 October
Clear. High 38°, low 27°.
0
Sun Prairie, Thursday, 29 October
Mostly clear. High 48°, low 27°.
0Sun Prairie, Friday, 30 October
Overcast. High 53°, low 33°.
0Sun Prairie, Saturday, 31 October
Overcast. High 50°, low 32°.
0.42
Sun Prairie, Sunday, 1 November
Snow. High 46°, low 35°.
0.01Sun Prairie, Monday, 2 November
Light snow. High 43°, low 30°.
0Sun Prairie, Tuesday, 3 November
Overcast. High 45°, low 29°.
0.08Sun Prairie, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.09Sun Prairie, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Sun Prairie, Friday, 6 November
Climate normal for this date — 60-year average.
0.03Sun Prairie, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Sun Prairie, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Sun Prairie, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Sun Prairie, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Sun Prairie, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Sun Prairie, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Sun Prairie, Friday, 13 November
Climate normal for this date — 60-year average.
0.04Sun Prairie, Saturday, 14 November
Climate normal for this date — 60-year average.
0.05Sun Prairie, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Sun Prairie, Monday, 16 November
Climate normal for this date — 60-year average.
0.08Sun Prairie, Tuesday, 17 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 Sun Prairie, 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 Sun Prairie, 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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