Weather in Summit Lawn, PA
Summit Lawn, Sunday, 9 August, 02:26
Partly cloudy. Feels like 73°. High 84°, low 72°.
Monthly outlook for Summit Lawn, PA: average high 79.7°, average low 62.7°. That is 0.8° below the climate normal for August. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 11 August (89.6°), the coolest 22 August (53.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.4° | 81.9° | -0.9° |
| 19 August – 28 August | 78.7° | 80.5° | -1° |
| 29 August – 7 September | at normal | 79° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Stiles (8 mi).
0.04
Summit Lawn, Monday, 10 August
Rain. High 86°, low 70°.
0.01Summit Lawn, Tuesday, 11 August
Light rain. High 90°, low 70°.
0.04Summit Lawn, Wednesday, 12 August
Light rain. High 83°, low 69°.
0.02Summit Lawn, Thursday, 13 August
Light rain. High 81°, low 63°.
0
Summit Lawn, Friday, 14 August
Clear. High 77°, low 57°.
0Summit Lawn, Saturday, 15 August
Clear. High 79°, low 56°.
0
Summit Lawn, Sunday, 16 August
Overcast. High 80°, low 55°.
0.03Summit Lawn, Monday, 17 August
Light rain. High 75°, low 58°.
0.13Summit Lawn, Tuesday, 18 August
Light rain. High 68°, low 64°.
0.05Summit Lawn, Wednesday, 19 August
Light rain. High 75°, low 64°.
1.06Summit Lawn, Thursday, 20 August
Heavy rain. High 77°, low 65°.
0Summit Lawn, Friday, 21 August
Clear. High 77°, low 58°.
0Summit Lawn, Saturday, 22 August
Clear. High 77°, low 53°.
0.04Summit Lawn, Sunday, 23 August
Light rain. High 81°, low 60°.
0.01Summit Lawn, Monday, 24 August
Light rain. High 84°, low 67°.
0.07
Summit Lawn, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.06Summit Lawn, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.19
Summit Lawn, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Summit Lawn, Friday, 28 August
Climate normal for this date — 60-year average.
0.14Summit Lawn, Saturday, 29 August
Climate normal for this date — 60-year average.
0.05Summit Lawn, Sunday, 30 August
Climate normal for this date — 60-year average.
0.06Summit Lawn, Monday, 31 August
Climate normal for this date — 60-year average.
0.15Summit Lawn, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.12Summit Lawn, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.14Summit Lawn, Thursday, 3 September
Climate normal for this date — 60-year average.
0.13Summit Lawn, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Summit Lawn, Saturday, 5 September
Climate normal for this date — 60-year average.
0.23Summit Lawn, Sunday, 6 September
Climate normal for this date — 60-year average.
0.13Summit Lawn, 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 Summit Lawn, 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 Summit Lawn, 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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