Yosemite National Park is definitely worth a visit
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Grantville (PA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grantville.
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Climate overview of Grantville
Grantville, Pennsylvania, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 30°C (86°F) in July, while winters cool to 3°C (37°F) in January.
The city has a wet climate, receiving around 1214 mm (48 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and cold winters. October is the wettest month. July is the sunniest month, averaging 10.3 hours of sunshine per day.
Grantville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grantville - and find the best time to visit.
Monthly Temperature in Grantville
Depending on the time of the year, temperatures range from comfortable to chilly in Grantville. On average, daytime temperatures range from a comfortable 30°C (86°F) in July to a chilly 3°C (37°F) in January.
Nighttime temperatures range from 18°C (64°F) in July to -6°C (21°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Grantville
Grantville has a relatively rain/snowy climate with high precipitation levels, averaging 1214 mm (48 in) of rain/snowfall annually. The amount of precipitation varies moderately throughout the year. The wettest month, October, sees around 132 mm (5.2 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 68 mm (2.7 in) of snow/rainfall. For more details, please visit our Grantville 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 Grantville
In Grantville, summer days are longer and more sunny, with daily sunshine hours peaking at 10.3 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.2 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Harrisburg, the United States of America (23 KM, 14 Miles).
Daily hours of sunshine
Data from: Harrisburg, the United States of America (23 KM, 14 Miles).
Daily percentage of sunshine
Data from: Harrisburg, the United States of America (23 KM, 14 Miles).
Humidity in Grantville by Month
The relative humidity is high throughout the year in Grantville.
The city experiences its highest humidity in September, reaching 73%. 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
Data from: Harrisburg, the United States of America (23 KM, 14 Miles).
Best Time to Visit Grantville
For comfortable weather, consider visiting Grantville in May, June, August and September. Conditions are usually least favourable in January, February, March and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
cold
Apr
good
May
very good
Jun
very good
Jul
mixed
Aug
very good
Sep
very good
Oct
good
Nov
mixed
Dec
wet
- Best overall: May, June, August and September
- Warmest weather: July and August
- Most sunshine: July
- Fewer rainy days: January, February, March, September and November
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Grantville
What is the best time to visit Grantville?
May, June, August and September typically offer the most optimal weather in Grantville. In contrast, January, February, March and December tend to have less optimal conditions. Grantville has warm summers and cold winters.
What temperatures can I expect in Grantville?
Daytime highs range from 3°C (37°F) in January to 30°C (86°F) in July. Nighttime lows range from -6°C (21°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Grantville get?
Annual rainfall is around 1214 mm (48 in). October is the wettest month with 132 mm (5.2 in), while February is the driest with 68 mm (2.7 in).
How sunny is Grantville?
Grantville receives around 2,609 hours of sunshine per year. July is the sunniest month with 310 hours, while December is the cloudiest with just 126 hours. Overall, Grantville enjoys abundant sunshine.
Grantville 3-Day Forecast
Grantville on the map
Grantville is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
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