Grantville (PA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grantville.
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 February.
The city has a wet climate, receiving around 1214 mm (48 in) of rain/snowfall per year. 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 February.
Nighttime temperatures range from 18°C (64°F) in July to -6°C (21°F) in February.
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
Daily hours of sunshine
Daily percentage of sunshine
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
Best Time to Visit Grantville
Rainfall during this time ranges from 107 mm (4.2 in) in July to 130 mm (5.1 in) in September. This means you can expect a mix of sunny days and occasional showers. Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
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.
What temperatures can I expect in Grantville?
Daytime highs range from 3°C (37°F) in February 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 (PA) 3-Day Forecast
Grantville on the map
Grantville is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.