Weather in Jefferson Hills, PA
Jefferson Hills, Sunday, 9 August, 07:41
Mostly clear. Feels like 68°. High 85°, low 68°.
Monthly outlook for Jefferson Hills, PA: average high 83.6°, average low 62.8°. That is 2.3° above the climate normal for August. Precipitation is expected on 4 days (about 2.0 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 23 August (94.8°), the coolest 16 August (52.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78.8° | 79.8° | -0.5° |
| 19 August – 28 August | 91.5° | 79.2° | +6.8° |
| 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).
0.65
Jefferson Hills, Monday, 10 August
Heavy rain. High 83°, low 67°.
0.98Jefferson Hills, Tuesday, 11 August
Heavy rain. High 84°, low 64°.
0.08Jefferson Hills, Wednesday, 12 August
Light rain. High 78°, low 65°.
0.03Jefferson Hills, Thursday, 13 August
Light rain. High 78°, low 61°.
0
Jefferson Hills, Friday, 14 August
Overcast. High 75°, low 55°.
0Jefferson Hills, Saturday, 15 August
Overcast. High 74°, low 55°.
0Jefferson Hills, Sunday, 16 August
Light rain. High 70°, low 53°.
0
Jefferson Hills, Monday, 17 August
Partly cloudy. High 79°, low 54°.
0
Jefferson Hills, Tuesday, 18 August
Clear. High 81°, low 59°.
0Jefferson Hills, Wednesday, 19 August
Partly cloudy. High 84°, low 59°.
0Jefferson Hills, Thursday, 20 August
Clear. High 90°, low 63°.
0Jefferson Hills, Friday, 21 August
Mostly clear. High 94°, low 72°.
0Jefferson Hills, Saturday, 22 August
Mostly clear. High 92°, low 67°.
0Jefferson Hills, Sunday, 23 August
Clear. High 95°, low 69°.
0.2Jefferson Hills, Monday, 24 August
Light rain. High 94°, low 74°.
0.09Jefferson Hills, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Jefferson Hills, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Jefferson Hills, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Jefferson Hills, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Jefferson Hills, Saturday, 29 August
Climate normal for this date — 60-year average.
0.14Jefferson Hills, Sunday, 30 August
Climate normal for this date — 60-year average.
0.16Jefferson Hills, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Jefferson Hills, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.13Jefferson Hills, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Jefferson Hills, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Jefferson Hills, Friday, 4 September
Climate normal for this date — 60-year average.
0.11Jefferson Hills, Saturday, 5 September
Climate normal for this date — 60-year average.
0.14Jefferson Hills, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Jefferson Hills, 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 Jefferson Hills, 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 Jefferson Hills, 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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