Bloomington (IN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Bloomington.
Climate overview of Bloomington
Bloomington, Indiana, United States of America, sees big temperature differences between seasons, with August peaking at 29°C (84°F) and January dropping to 3°C (37°F).
With around 1321 mm (52 in) of annual rain/snowfall, Bloomington has a notably wet climate. The wettest month is June. The most sunshine falls in July, with an average of 9.9 hours of daily sunshine.
Bloomington Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Bloomington — and find the best time to visit.
Monthly Temperature in Bloomington
Visitors to Bloomington can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 29°C (84°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 3°C (37°F).
At night, temperatures range from around 18°C (64°F) in August to -7°C (19°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Bloomington
Bloomington is known for its substantial rain/snowfall, with annual precipitation reaching 1321 mm (52 in). Bloomington can be quite wet during June, receiving approximately 168 mm (6.6 in) of precipitation over 13 rainy days.
In contrast, during the driest month (August), you will experience much drier conditions, with 74 mm (2.9 in) of precipitation spread across 8 rainy days days. For more details, please visit our Bloomington 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 Bloomington
Bloomington can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.9 hours of sunshine daily. In contrast, the city experiences much darker days in December, 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 Bloomington by Month
The relative humidity is high throughout the year in Bloomington.
The city experiences its highest humidity in December, reaching 78%. In April, the humidity drops to its lowest level at 66%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Bloomington
The weather does bring rainfall during this period, between 74 mm (2.9 in) and 147 mm (5.8 in).
Plan accordingly for June, when conditions bring the heaviest precipitation. Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
Frequently asked questions about the climate in Bloomington
What is the best time to visit Bloomington?
August and September typically offer the most optimal weather in Bloomington. In contrast, January, February, March and December tend to have less optimal conditions.
What temperatures can I expect in Bloomington?
Daytime highs range from 3°C (37°F) in January to 29°C (84°F) in August. Nighttime lows range from -7°C (19°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Bloomington get?
Annual rainfall is around 1321 mm (52 in). June is the wettest month with 168 mm (6.6 in), while August is the driest with 74 mm (2.9 in).
How sunny is Bloomington?
Bloomington receives around 2,470 hours of sunshine per year. July is the sunniest month with 297 hours, while December is the cloudiest with just 105 hours. Overall, Bloomington enjoys abundant sunshine.
Bloomington 3-Day Forecast
Bloomington (IN) 3-Day Forecast
Bloomington on the map
Bloomington is highlighted — select any city to see its climate.
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