Weather in Glen Roy, PA
Glen Roy, Sunday, 9 August, 00:27
Overcast. Feels like 73°. High 87°, low 72°.
Monthly outlook for Glen Roy, PA: average high 79°, average low 63.6°. That is 1.4° below the climate normal for August. Precipitation is expected on 7 days (about 1.6 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 9 August (87.2°), the coolest 22 August (54.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 79.7° | 82.3° | -1.5° |
| 19 August – 28 August | 78° | 81.1° | -1.7° |
| 29 August – 7 September | at normal | 79.8° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Lincoln University (7 mi).
0.05
Glen Roy, Monday, 10 August
Light rain. High 86°, low 72°.
0.32Glen Roy, Tuesday, 11 August
Rain. High 84°, low 68°.
0.07Glen Roy, Wednesday, 12 August
Light rain. High 84°, low 69°.
0
Glen Roy, Thursday, 13 August
Mostly clear. High 81°, low 65°.
0
Glen Roy, Friday, 14 August
Partly cloudy. High 77°, low 58°.
0
Glen Roy, Saturday, 15 August
Clear. High 77°, low 58°.
0Glen Roy, Sunday, 16 August
Overcast. High 77°, low 58°.
0.2Glen Roy, Monday, 17 August
Light rain. High 76°, low 62°.
0.19Glen Roy, Tuesday, 18 August
Light rain. High 68°, low 64°.
0.06Glen Roy, Wednesday, 19 August
Light rain. High 75°, low 65°.
0.74Glen Roy, Thursday, 20 August
Rain. High 76°, low 66°.
0Glen Roy, Friday, 21 August
Clear. High 77°, low 58°.
0Glen Roy, Saturday, 22 August
Partly cloudy. High 75°, low 54°.
0.01Glen Roy, Sunday, 23 August
Light rain. High 81°, low 60°.
0Glen Roy, Monday, 24 August
Clear. High 84°, low 69°.
0.06Glen Roy, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.07Glen Roy, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.18
Glen Roy, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Glen Roy, Friday, 28 August
Climate normal for this date — 60-year average.
0.1Glen Roy, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Glen Roy, Sunday, 30 August
Climate normal for this date — 60-year average.
0.08Glen Roy, Monday, 31 August
Climate normal for this date — 60-year average.
0.14Glen Roy, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.1Glen Roy, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Glen Roy, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Glen Roy, Friday, 4 September
Climate normal for this date — 60-year average.
0.11Glen Roy, Saturday, 5 September
Climate normal for this date — 60-year average.
0.23Glen Roy, Sunday, 6 September
Climate normal for this date — 60-year average.
0.09Glen Roy, 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 Glen Roy, 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 Glen Roy, 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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