Weather in Johnstown Center, WI
Johnstown Center, Sunday, 9 August, 01:32
Clear. Feels like 64°. High 78°, low 62°.
Monthly outlook for Johnstown Center, WI: average high 75.4°, average low 59.3°. That is 1.8° below the climate normal for August. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 10 August (85.4°), the coolest 20 August (50.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 77.7° | 78.7° | -0.6° |
| 19 August – 28 August | 71.6° | 78.8° | -4° |
| 29 August – 7 September | at normal | 77° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Darien (9 mi).
0.11
Johnstown Center, Monday, 10 August
Light rain. High 85°, low 69°.
0.59Johnstown Center, Tuesday, 11 August
Heavy rain. High 82°, low 65°.
0
Johnstown Center, Wednesday, 12 August
Overcast. High 79°, low 66°.
0Johnstown Center, Thursday, 13 August
Overcast. High 71°, low 59°.
0
Johnstown Center, Friday, 14 August
Mostly clear. High 73°, low 55°.
0Johnstown Center, Saturday, 15 August
Overcast. High 74°, low 54°.
0.03Johnstown Center, Sunday, 16 August
Light rain. High 74°, low 60°.
0Johnstown Center, Monday, 17 August
Mostly clear. High 79°, low 61°.
0.01Johnstown Center, Tuesday, 18 August
Light rain. High 82°, low 64°.
0.01Johnstown Center, Wednesday, 19 August
Light rain. High 71°, low 56°.
0Johnstown Center, Thursday, 20 August
Overcast. High 66°, low 51°.
0
Johnstown Center, Friday, 21 August
Clear. High 73°, low 52°.
0.17Johnstown Center, Saturday, 22 August
Light rain. High 65°, low 53°.
0.02Johnstown Center, Sunday, 23 August
Light rain. High 76°, low 63°.
0Johnstown Center, Monday, 24 August
Overcast. High 78°, low 58°.
0.09
Johnstown Center, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.15Johnstown Center, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.1Johnstown Center, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13
Johnstown Center, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Johnstown Center, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Johnstown Center, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Johnstown Center, Monday, 31 August
Climate normal for this date — 60-year average.
0.09Johnstown Center, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.05Johnstown Center, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Johnstown Center, Thursday, 3 September
Climate normal for this date — 60-year average.
0.08Johnstown Center, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Johnstown Center, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09Johnstown Center, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Johnstown Center, 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 Johnstown Center, 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 Johnstown Center, 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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