Hanover (PA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Hanover.
Climate overview of Hanover
Hanover, Pennsylvania, United States of America, sees big temperature differences between seasons, with July peaking at 30°C (86°F) and January dropping to 4°C (39°F).
With around 1148 mm (45 in) of annual rain/snowfall, Hanover has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has very warm summers and cold winters. The wettest month is September. The sunniest month is July, with 10.3 hours of sunshine per day on average.
Hanover Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Hanover - and find the best time to visit.
Monthly Temperature in Hanover
Visitors to Hanover can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 30°C (86°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 4°C (39°F).
At night, temperatures range from around 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 Hanover
Hanover is known for its substantial rain/snowfall, with annual precipitation reaching 1148 mm (45 in). Hanover experiences moderate seasonal variation in rainfall, with monthly averages ranging from 132 mm (5.2 in) in September, the wettest month, and 68 mm (2.7 in) in January, the driest month. For more details, please visit our Hanover 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 Hanover
Hanover can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.3 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Hanover by Month
The relative humidity is high throughout the year in Hanover.
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 Hanover
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, June, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Hanover
What is the best time to visit Hanover?
April, May, June, August and September typically offer the most optimal weather in Hanover. In contrast, January, February and December tend to have less optimal conditions. Hanover has very warm summers and cold winters.
What temperatures can I expect in Hanover?
Daytime highs range from 4°C (39°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 Hanover get?
Annual rainfall is around 1148 mm (45 in). September is the wettest month with 132 mm (5.2 in), while January is the driest with 68 mm (2.7 in).
How sunny is Hanover?
Hanover 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, Hanover enjoys abundant sunshine.
Hanover 3-Day Forecast
Hanover on the map
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