Weather in West Tappan, MI
West Tappan, Sunday, 9 August, 05:20
Clear. Feels like 60°. High 87°, low 60°.
Monthly outlook for West Tappan, MI: average high 80.9°, average low 61.5°. That is 1.8° above the climate normal for August. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 20 August (91.1°), the coolest 15 August (51.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78.9° | 78.1° | +0.5° |
| 19 August – 28 August | 84.1° | 77.1° | +3.9° |
| 29 August – 7 September | at normal | 75.8° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Marysville (5 mi).
0.14
West Tappan, Monday, 10 August
Rain. High 86°, low 71°.
0
West Tappan, Tuesday, 11 August
Overcast. High 83°, low 63°.
0.05West Tappan, Wednesday, 12 August
Light rain. High 83°, low 61°.
0
West Tappan, Thursday, 13 August
Clear. High 72°, low 55°.
0
West Tappan, Friday, 14 August
Mostly clear. High 72°, low 52°.
0West Tappan, Saturday, 15 August
Overcast. High 73°, low 51°.
0West Tappan, Sunday, 16 August
Overcast. High 77°, low 55°.
0.02West Tappan, Monday, 17 August
Light rain. High 78°, low 63°.
0
West Tappan, Tuesday, 18 August
Partly cloudy. High 79°, low 59°.
0West Tappan, Wednesday, 19 August
Overcast. High 87°, low 61°.
0.05West Tappan, Thursday, 20 August
Light rain. High 91°, low 67°.
0West Tappan, Friday, 21 August
Mostly clear. High 83°, low 66°.
0West Tappan, Saturday, 22 August
Mostly clear. High 87°, low 64°.
0.41West Tappan, Sunday, 23 August
Rain. High 82°, low 69°.
0.01West Tappan, Monday, 24 August
Light rain. High 74°, low 66°.
0.08West Tappan, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09
West Tappan, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11West Tappan, Thursday, 27 August
Climate normal for this date — 60-year average.
0.17West Tappan, Friday, 28 August
Climate normal for this date — 60-year average.
0.13West Tappan, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07West Tappan, Sunday, 30 August
Climate normal for this date — 60-year average.
0.05West Tappan, Monday, 31 August
Climate normal for this date — 60-year average.
0.06West Tappan, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.08West Tappan, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1West Tappan, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09West Tappan, Friday, 4 September
Climate normal for this date — 60-year average.
0.04West Tappan, Saturday, 5 September
Climate normal for this date — 60-year average.
0.06West Tappan, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11West Tappan, 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 West Tappan, MI 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 West Tappan, MI 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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