Weather in South Byron, WI
South Byron, Sunday, 9 August, 08:23
Overcast. Feels like 68°. High 80°, low 61°.
Monthly outlook for South Byron, WI: average high 76.5°, average low 58.6°. That is 0.5° below the climate normal for August. Precipitation is expected on 7 days (about 1.3 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 10 August (84.3°), the coolest 23 August (51°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 76.2° | 77.5° | -0.7° |
| 19 August – 28 August | 77° | 77.5° | -0.2° |
| 29 August – 7 September | at normal | 75.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Theresa (9 mi).
0South Byron, Monday, 10 August
Overcast. High 84°, low 70°.
0.04
South Byron, Tuesday, 11 August
Rain. High 78°, low 62°.
0
South Byron, Wednesday, 12 August
Clear. High 84°, low 63°.
0South Byron, Thursday, 13 August
Overcast. High 69°, low 57°.
0
South Byron, Friday, 14 August
Partly cloudy. High 75°, low 54°.
0.05South Byron, Saturday, 15 August
Light rain. High 71°, low 57°.
0.15South Byron, Sunday, 16 August
Light rain. High 68°, low 63°.
0South Byron, Monday, 17 August
Partly cloudy. High 78°, low 57°.
0South Byron, Tuesday, 18 August
Overcast. High 75°, low 58°.
0.04South Byron, Wednesday, 19 August
Light rain. High 77°, low 60°.
0South Byron, Thursday, 20 August
Overcast. High 76°, low 54°.
0.07South Byron, Friday, 21 August
Light rain. High 77°, low 59°.
0.19South Byron, Saturday, 22 August
Light rain. High 76°, low 58°.
0South Byron, Sunday, 23 August
Overcast. High 75°, low 51°.
0South Byron, Monday, 24 August
Clear. High 81°, low 56°.
0.09South Byron, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.13
South Byron, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12South Byron, Thursday, 27 August
Climate normal for this date — 60-year average.
0.17South Byron, Friday, 28 August
Climate normal for this date — 60-year average.
0.11South Byron, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07South Byron, Sunday, 30 August
Climate normal for this date — 60-year average.
0.04
South Byron, Monday, 31 August
Climate normal for this date — 60-year average.
0.07South Byron, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.07South Byron, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09South Byron, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07South Byron, Friday, 4 September
Climate normal for this date — 60-year average.
0.08South Byron, Saturday, 5 September
Climate normal for this date — 60-year average.
0.08South Byron, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11South Byron, Monday, 7 September
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 South Byron, 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 South Byron, 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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