Butler (PA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Butler.
Climate overview of Butler
Temperatures in Butler, Pennsylvania, United States of America, vary greatly throughout the year. July is the hottest month at 28°C (82°F), while January is the coldest at 1°C (34°F).
The city has a wet climate, receiving around 1083 mm (43 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. June is the wettest month. July is the sunniest month, averaging 8.5 hours of sunshine per day.
Butler Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Butler - and find the best time to visit.
Monthly Temperature in Butler
The climate in Butler is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 28°C (82°F) in July to a very cold 1°C (34°F) in January.
Nighttime temperatures range from 15°C (59°F) in July to -9°C (16°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Butler
Butler has a notably wet climate with abundant precipitation, recording 1083 mm (43 in) of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, June, sees around 123 mm (4.8 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 65 mm (2.6 in) of snow/rainfall. For more details, please visit our Butler Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Butler
In Butler, summer days are longer and more sunny, with daily sunshine hours peaking at 8.5 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 2.4 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Butler by Month
The relative humidity is high throughout the year in Butler.
The city experiences its highest humidity in September, reaching 72%. In April, the humidity drops to its lowest level at 59%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Butler
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, August and September
- Warmest weather: July and August
- Most sunshine: June and July
- Fewest rainy days: March, August, September and November
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Butler
What is the best time to visit Butler?
May, August and September typically offer the most optimal weather in Butler. In contrast, January, February, March, November and December tend to have less optimal conditions. Butler has warm summers and very cold winters.
What temperatures can I expect in Butler?
Daytime highs range from 1°C (34°F) in January to 28°C (82°F) in July. Nighttime lows range from -9°C (16°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Butler get?
Annual rainfall is around 1083 mm (43 in). June is the wettest month with 123 mm (4.8 in), while February is the driest with 65 mm (2.6 in).
How sunny is Butler?
Butler receives around 2,029 hours of sunshine per year. July is the sunniest month with 255 hours, while December is the cloudiest with just 73 hours. Overall, Butler enjoys abundant sunshine.
Butler 3-Day Forecast
Butler on the map
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