Weather in Glen Lyon, PA
Glen Lyon, Sunday, 9 August, 03:45
Mostly clear. Feels like 68°. High 85°, low 67°.
Monthly outlook for Glen Lyon, PA: average high 83.5°, average low 62°. That is 2.6° above the climate normal for August. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 6 days and 2.0 inches. The warmest day looks like 24 August (93.6°), the coolest 16 August (50.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80° | 79.5° | +0.3° |
| 19 August – 28 August | 89.3° | 78.2° | +6.2° |
| 29 August – 7 September | at normal | 76.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Conyngham (13 mi).
0.01
Glen Lyon, Monday, 10 August
Light rain. High 83°, low 68°.
0.35Glen Lyon, Tuesday, 11 August
Rain. High 86°, low 66°.
0.03Glen Lyon, Wednesday, 12 August
Light rain. High 83°, low 65°.
0.02Glen Lyon, Thursday, 13 August
Light rain. High 79°, low 59°.
0
Glen Lyon, Friday, 14 August
Overcast. High 70°, low 52°.
0
Glen Lyon, Saturday, 15 August
Clear. High 74°, low 51°.
0Glen Lyon, Sunday, 16 August
Overcast. High 77°, low 50°.
0
Glen Lyon, Monday, 17 August
Partly cloudy. High 79°, low 57°.
0Glen Lyon, Tuesday, 18 August
Overcast. High 84°, low 60°.
0Glen Lyon, Wednesday, 19 August
Partly cloudy. High 86°, low 64°.
0Glen Lyon, Thursday, 20 August
Partly cloudy. High 88°, low 63°.
0.48Glen Lyon, Friday, 21 August
Rain. High 90°, low 67°.
0.01Glen Lyon, Saturday, 22 August
Light rain. High 87°, low 67°.
0Glen Lyon, Sunday, 23 August
Clear. High 92°, low 64°.
0.13Glen Lyon, Monday, 24 August
Light rain. High 94°, low 71°.
0.07Glen Lyon, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.06
Glen Lyon, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.16
Glen Lyon, Thursday, 27 August
Climate normal for this date — 60-year average.
0.21Glen Lyon, Friday, 28 August
Climate normal for this date — 60-year average.
0.19Glen Lyon, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Glen Lyon, Sunday, 30 August
Climate normal for this date — 60-year average.
0.08Glen Lyon, Monday, 31 August
Climate normal for this date — 60-year average.
0.18Glen Lyon, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.12Glen Lyon, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Glen Lyon, Thursday, 3 September
Climate normal for this date — 60-year average.
0.15Glen Lyon, Friday, 4 September
Climate normal for this date — 60-year average.
0.09Glen Lyon, Saturday, 5 September
Climate normal for this date — 60-year average.
0.18Glen Lyon, Sunday, 6 September
Climate normal for this date — 60-year average.
0.1Glen Lyon, 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 Lyon, 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 Lyon, 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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