Weather in Mount Lebanon, PA
Mount Lebanon, Sunday, 9 August, 05:22
Clear. Feels like 68°. High 86°, low 67°.
Monthly outlook for Mount Lebanon, PA: average high 83.3°, average low 62.9°. That is 2.2° above the climate normal for August. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 21 August (94.8°), the coolest 16 August (53.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 78.4° | 79.8° | -0.8° |
| 19 August – 28 August | 91.5° | 79.2° | +6.8° |
| 29 August – 7 September | at normal | 77.7° | — |
August records over 66 years
0.56
Mount Lebanon, Monday, 10 August
Heavy rain. High 81°, low 68°.
0.83Mount Lebanon, Tuesday, 11 August
Heavy rain. High 83°, low 63°.
0.06Mount Lebanon, Wednesday, 12 August
Light rain. High 79°, low 64°.
0.05Mount Lebanon, Thursday, 13 August
Light rain. High 78°, low 61°.
0
Mount Lebanon, Friday, 14 August
Overcast. High 75°, low 56°.
0Mount Lebanon, Saturday, 15 August
Overcast. High 73°, low 55°.
0.01Mount Lebanon, Sunday, 16 August
Light rain. High 70°, low 53°.
0
Mount Lebanon, Monday, 17 August
Partly cloudy. High 78°, low 55°.
0
Mount Lebanon, Tuesday, 18 August
Clear. High 81°, low 60°.
0Mount Lebanon, Wednesday, 19 August
Partly cloudy. High 84°, low 60°.
0
Mount Lebanon, Thursday, 20 August
Mostly clear. High 89°, low 64°.
0.01Mount Lebanon, Friday, 21 August
Light rain. High 95°, low 73°.
0Mount Lebanon, Saturday, 22 August
Mostly clear. High 92°, low 66°.
0Mount Lebanon, Sunday, 23 August
Clear. High 94°, low 69°.
0.14Mount Lebanon, Monday, 24 August
Light rain. High 95°, low 73°.
0.09Mount Lebanon, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.09Mount Lebanon, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13
Mount Lebanon, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Mount Lebanon, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Mount Lebanon, Saturday, 29 August
Climate normal for this date — 60-year average.
0.14Mount Lebanon, Sunday, 30 August
Climate normal for this date — 60-year average.
0.16Mount Lebanon, Monday, 31 August
Climate normal for this date — 60-year average.
0.1Mount Lebanon, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.13Mount Lebanon, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Mount Lebanon, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Mount Lebanon, Friday, 4 September
Climate normal for this date — 60-year average.
0.11Mount Lebanon, Saturday, 5 September
Climate normal for this date — 60-year average.
0.14Mount Lebanon, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Mount Lebanon, 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 Mount Lebanon, 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 Mount Lebanon, 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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