Mount Lebanon Climate by Month
Mount Lebanon, Pennsylvania, United States
Warm summers and cold winters, with rain spread through the year.
The climate in Mount Lebanon is one of warm summers and cold winters, with rain spread through the year. July is the warmest month, with highs around 85°F (30°C); January is the coolest at 38°F (4°C), and nights dip to 21°F (-6°C). About 39 in (983 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(30°C)
- Average high, July
- Coldest nights
- 21°F(-6°C)
- Average low, January
- Rain per year
- 39 in(983 mm)
- No clear rainy season
- Humidity
- 67%
- Sunniest: July
Best and worst months in Mount Lebanon
Best for weatherMay and September are the best time for weather in Mount Lebanon: highs near 76°F (24°C) and about 3.6 in (93 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 38°F (4°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Mount Lebanon weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 38°F(4°C) | 21°F(-6°C) | 2.8 in(70 mm) | 71% | 1.5 |
| FebFebruary | 42°F(6°C) | 23°F(-5°C) | 2.5 in(64 mm) | 65% | 2.4 |
| MarMarch | 52°F(11°C) | 30°F(-1°C) | 3.3 in(85 mm) | 58% | 3.4 |
| AprApril | 64°F(18°C) | 39°F(4°C) | 3.5 in(90 mm) | 62% | 4.5 |
| MayMayBest | 74°F(23°C) | 50°F(10°C) | 4.1 in(105 mm) | 64% | 5.3 |
| JunJune | 82°F(28°C) | 58°F(15°C) | 4.3 in(109 mm) | 68% | 5.7 |
| JulJuly | 85°F(30°C) | 63°F(17°C) | 3.7 in(93 mm) | 70% | 5.7 |
| AugAugust | 83°F(29°C) | 61°F(16°C) | 3.1 in(79 mm) | 70% | 5.2 |
| SepSeptemberBest | 78°F(26°C) | 54°F(12°C) | 3.1 in(80 mm) | 69% | 4.2 |
| OctOctober | 66°F(19°C) | 43°F(6°C) | 2.8 in(71 mm) | 69% | 2.8 |
| NovNovember | 53°F(12°C) | 33°F(1°C) | 2.6 in(67 mm) | 63% | 1.8 |
| DecDecember | 42°F(6°C) | 26°F(-3°C) | 2.8 in(70 mm) | 75% | 1.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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