Weather in Forest Grove, PA
Forest Grove, Sunday, 9 August, 01:04
Clear. Feels like 70°. High 84°, low 68°.
Monthly outlook for Forest Grove, PA: average high 79.1°, average low 60.1°. That is 0.2° below the climate normal for August. Precipitation is expected on 6 days (about 2.9 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 10 August (86.4°), the coolest 22 August (52°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 79.4° | 79.8° | -0.2° |
| 19 August – 28 August | 78.4° | 79.2° | -0.5° |
| 29 August – 7 September | at normal | 77.7° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Mount Lebanon (8 mi).
2.1
Forest Grove, Monday, 10 August
Heavy rain. High 86°, low 66°.
0.13Forest Grove, Tuesday, 11 August
Rain. High 81°, low 65°.
0.07Forest Grove, Wednesday, 12 August
Light rain. High 79°, low 65°.
0Forest Grove, Thursday, 13 August
Light rain. High 74°, low 60°.
0
Forest Grove, Friday, 14 August
Clear. High 77°, low 55°.
0
Forest Grove, Saturday, 15 August
Partly cloudy. High 77°, low 55°.
0Forest Grove, Sunday, 16 August
Partly cloudy. High 80°, low 55°.
0.03Forest Grove, Monday, 17 August
Light rain. High 73°, low 60°.
0Forest Grove, Tuesday, 18 August
Clear. High 83°, low 58°.
0.47Forest Grove, Wednesday, 19 August
Rain. High 84°, low 64°.
0.05Forest Grove, Thursday, 20 August
Light rain. High 68°, low 58°.
0Forest Grove, Friday, 21 August
Clear. High 75°, low 53°.
0.02Forest Grove, Saturday, 22 August
Light rain. High 77°, low 52°.
0.02Forest Grove, Sunday, 23 August
Light rain. High 86°, low 64°.
0.04Forest Grove, Monday, 24 August
Light rain. High 81°, low 63°.
0.09Forest Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Forest Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Forest Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Forest Grove, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Forest Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
0.14Forest Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
0.16Forest Grove, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Forest Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.13Forest Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Forest Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Forest Grove, Friday, 4 September
Climate normal for this date — 60-year average.
0.11Forest Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
0.14Forest Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Forest Grove, 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 Forest Grove, PA 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 Forest Grove, PA 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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