Donegal (PA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Donegal.
Climate overview of Donegal
Temperatures in Donegal, Pennsylvania, United States of America, vary greatly throughout the year. July is the hottest month at 27°C (81°F), while February is the coldest at 2°C (36°F).
The city has a wet climate, receiving around 1252 mm (49 in) of rain/snowfall per year. June is the wettest month. Sunshine peaks in July, when the city sees around 8.5 hours of sunshine per day.
Donegal Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Donegal — and find the best time to visit.
Monthly Temperature in Donegal
The climate in Donegal is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold 2°C (36°F) in February.
Nighttime temperatures range from 15°C (59°F) in July to -9°C (16°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Donegal
Donegal has a notably wet climate with abundant precipitation, recording 1252 mm (49 in) of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, June, sees around 140 mm (5.5 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 76 mm (3 in) of snow/rainfall. For more details, please visit our Donegal 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 Donegal
In Donegal, 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 2.6 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Donegal
Frequently asked questions about the climate in Donegal
What is the best time to visit Donegal?
September typically offers the most optimal weather in Donegal. In contrast, January, February, March, November and December tend to have less optimal conditions.
What temperatures can I expect in Donegal?
Daytime highs range from 2°C (36°F) in February to 27°C (81°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 Donegal get?
Annual rainfall is around 1252 mm (49 in). June is the wettest month with 140 mm (5.5 in), while February is the driest with 76 mm (3 in).
How sunny is Donegal?
Donegal receives around 2,022 hours of sunshine per year. July is the sunniest month with 255 hours, while December is the cloudiest with just 78 hours. Overall, Donegal enjoys abundant sunshine.
Donegal 3-Day Forecast
Donegal (PA) 3-Day Forecast
Donegal on the map
Donegal 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.