Marion (IN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Marion.
Climate overview of Marion
Marion, Indiana, United States of America, sees big temperature differences between seasons, with July peaking at 29°C (84°F) and January dropping to 1°C (34°F).
Rain/snowfall is high, totalling around 1089 mm (43 in) per year. June is the wettest month and February the driest. The city also experiences warm summers and very cold winters. July is the sunniest month, averaging 11.5 hours of sunshine per day.
Marion Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Marion - and find the best time to visit.
Monthly Temperature in Marion
Visitors to Marion can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in July, the warmest time of the year, to a very cold 1°C (34°F) during cooler months like January.
At night, you can expect temperatures ranging from 17°C (63°F) in July to around -8°C (18°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Marion
Marion is known for its substantial rain/snowfall, with annual precipitation reaching 1089 mm (43 in). While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 135 mm (5.3 in) of precipitation, spread over 14 rainy days.
In contrast, the driest month February experiences a drier climate, with about 64 mm (2.5 in) of snow/rainfall spread across 11 snowy/rainy days. For more details, please visit our Marion 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 Marion
Seasonal changes in sunshine hours are quite dramatic in Marion. While July receives considerable daily sunshine with up to 11.5 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.5 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 Marion by Month
The relative humidity is high throughout the year in Marion.
The city experiences its highest humidity in December, reaching 77%. In May, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Marion
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and September
- Warmest weather: June, July and August
- Most sunshine: June and July
- 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 Marion
What is the best time to visit Marion?
July and September typically offer the most optimal weather in Marion. In contrast, January, February, March, November and December tend to have less optimal conditions. Marion has warm summers and very cold winters.
What temperatures can I expect in Marion?
Daytime highs range from 1°C (34°F) in January to 29°C (84°F) in July. Nighttime lows range from -8°C (18°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Marion get?
Annual rainfall is around 1089 mm (43 in). June is the wettest month with 135 mm (5.3 in), while February is the driest with 64 mm (2.5 in).
How sunny is Marion?
Marion receives around 2,779 hours of sunshine per year. July is the sunniest month with 345 hours, while December is the cloudiest with just 106 hours. Overall, Marion enjoys abundant sunshine.
Marion 3-Day Forecast
Marion on the map
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