Indiana (PA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Indiana.
Climate overview of Indiana
Indiana, Pennsylvania, United States of America, sees big temperature differences between seasons, with July peaking at 28°C (82°F) and January dropping to 2°C (36°F).
With around 1195 mm (47 in) of annual rain/snowfall, Indiana has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has warm summers and very cold winters. The wettest month is July.
Indiana Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Indiana - and find the best time to visit.
Monthly Temperature in Indiana
Visitors to Indiana can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a very cold 2°C (36°F).
At night, temperatures range from around 16°C (61°F) in July to -8°C (18°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Indiana
Indiana is known for its substantial rain/snowfall, with annual precipitation reaching 1195 mm (47 in). Indiana experiences moderate seasonal variation in rainfall, with monthly averages ranging from 134 mm (5.3 in) in July, the wettest month, and 68 mm (2.7 in) in February, the driest month. For more details, please visit our Indiana Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Indiana
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September
- Warmest weather: July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Indiana
What is the best time to visit Indiana?
September typically offers the most optimal weather in Indiana. In contrast, January, February, March and December tend to have less optimal conditions. Indiana has warm summers and very cold winters.
What temperatures can I expect in Indiana?
Daytime highs range from 2°C (36°F) in January to 28°C (82°F) in July. Nighttime lows range from -8°C (18°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Indiana get?
Annual rainfall is around 1195 mm (47 in). July is the wettest month with 134 mm (5.3 in), while February is the driest with 68 mm (2.7 in).
Indiana 3-Day Forecast
Indiana (PA) 3-Day Forecast
Indiana on the map
Indiana 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.