Monroeville Climate by Month
Monroeville, Pennsylvania, United States
Warm summers and cold winters, with rain spread through the year.
Monroeville has warm summers and cold winters, with rain spread through the year. Afternoon highs range from 38°F (3°C) in January to 85°F (29°C) in July, and January nights average 21°F (-6°C). It gets 40 in (1017 mm) of rain a year, spread across the months.
- Warmest month
- 85°F(29°C)
- Average high, July
- Coldest nights
- 21°F(-6°C)
- Average low, January
- Rain per year
- 40 in(1017 mm)
- No clear rainy season
- Humidity
- 68%
- Sunniest: July
Best and worst months in Monroeville
Best for weatherMay and September are the best time for weather in Monroeville: highs near 76°F (24°C) and about 3.7 in (95 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 38°F (3°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)
Monroeville weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 38°F(3°C) | 21°F(-6°C) | 2.8 in(71 mm) | 73% | 1.5 |
| FebFebruary | 42°F(5°C) | 22°F(-5°C) | 2.6 in(65 mm) | 66% | 2.4 |
| MarMarch | 51°F(11°C) | 29°F(-2°C) | 3.4 in(86 mm) | 60% | 3.4 |
| AprApril | 63°F(17°C) | 39°F(4°C) | 3.7 in(95 mm) | 63% | 4.5 |
| MayMayBest | 74°F(23°C) | 49°F(9°C) | 4.2 in(107 mm) | 65% | 5.2 |
| JunJune | 81°F(27°C) | 57°F(14°C) | 4.3 in(109 mm) | 69% | 5.6 |
| JulJuly | 85°F(29°C) | 61°F(16°C) | 3.9 in(99 mm) | 68% | 5.7 |
| AugAugust | 84°F(29°C) | 60°F(16°C) | 3.3 in(84 mm) | 71% | 5.2 |
| SepSeptemberBest | 78°F(25°C) | 53°F(12°C) | 3.3 in(83 mm) | 70% | 4.2 |
| OctOctober | 66°F(19°C) | 42°F(6°C) | 3.0 in(76 mm) | 70% | 2.8 |
| NovNovember | 53°F(12°C) | 33°F(1°C) | 2.8 in(70 mm) | 64% | 1.8 |
| DecDecember | 42°F(6°C) | 26°F(-3°C) | 2.8 in(72 mm) | 76% | 1.3 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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