Bloomington, United States experiences average highs of 18°C (64°F) and lows of 9°C (48°F) throughout the year. Rainfall is moderate, averaging about 10 rainy days per month. Average highs have stayed broadly stable across the available records.
Bloomington, United States Weather & Climate 2026
Monthly climate averages for Bloomington, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–Jul At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.5/10
Best: May, June, August, September, October
UV Index
6
High
Temperature 18°C / 9°C
Feels Like 17°C / 7°C
Rainy Days 10
Rainfall 102 mm
Sunshine 8 h
Humidity 71%
Wind Speed 15 km/h
Dew Point 8°C
Frost Days 13 days
Hottest Month
30°C
July
Avg Low21°C
Rain12days
Coldest Month
-4°C
January
Avg High4°C
Rain9days
Driest Month
7days
September
Avg High27°C
Avg Low17°C
Windiest Month
18 km/h
April (Gusts 44)
Worst Time to Visit
Consider avoiding January, February, December due to very cold temperatures.
Sun Position
Sunrise 06:21
Daylight 14.9h
Sunset 21:15
Live conditions—
Bloomington on the map · live conditions
Bloomington, United States
- Continent
- Americas
- Country
- United States
- City
- Bloomington
- Population
- 84.1K
- Elevation
- 235 m
- Coordinates
- 39.17°, -86.53°
Seasonal Breakdown
Spring
Mar–May
Avg High 18°C
Avg Low 8°C
Rain 13 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 29°C
Avg Low 20°C
Rain 11 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 20°C
Avg Low 11°C
Rain 8 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 6°C
Avg Low -2°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 4°C / -4°C . Feb: 8°C / -2°C . Mar: 13°C / 3°C . Apr: 18°C / 8°C . May: 23°C / 14°C . Jun: 28°C / 18°C . Jul: 30°C / 21°C . Aug: 29°C / 20°C . Sep: 27°C / 17°C . Oct: 20°C / 11°C . Nov: 12°C / 4°C . Dec: 7°C / -1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 93 mm. Feb: 99 mm. Mar: 133 mm. Apr: 129 mm. May: 120 mm. Jun: 103 mm. Jul: 123 mm. Aug: 97 mm. Sep: 71 mm. Oct: 75 mm. Nov: 87 mm. Dec: 88 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 71%. Feb: 69%. Mar: 67%. Apr: 68%. May: 74%. Jun: 70%. Jul: 75%. Aug: 73%. Sep: 69%. Oct: 68%. Nov: 70%. Dec: 73%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 17 km/h . Mar: 18 km/h . Apr: 18 km/h . May: 15 km/h . Jun: 14 km/h . Jul: 12 km/h . Aug: 12 km/h . Sep: 13 km/h . Oct: 15 km/h . Nov: 16 km/h . Dec: 16 km/h .
Sunshine
Sunshine
Sunshine: Jan: 5h. Feb: 6h. Mar: 7h. Apr: 9h. May: 10h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 8h. Nov: 6h. Dec: 5h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 9. Jul: UV 9. Aug: UV 8. Sep: UV 7. Oct: UV 5. Nov: UV 3. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Good May best
Excellent June best
Excellent July
Fair August best
Good September best
Excellent October best
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 4°C / -4°C | 0°C / -8°C | 9days (93 mm) Wet | 5.1h Fair | 71% Muggy | 2.9 Moderate | Poor | View Details |
| February | 8°C / -2°C | 4°C / -6°C | 10days (99 mm) Wet | 6.4h Fair | 69% Muggy | 4.2 Moderate | Poor | View Details |
| March | 13°C / 3°C | 10°C / -1°C | 12days (133 mm) Wet | 7.4h Good | 67% Muggy | 5.7 High | Poor | View Details |
| April | 18°C / 8°C | 17°C / 5°C | 12days (129 mm) Wet | 9h Good | 68% Muggy | 7.4 Very High | Good | View Details |
| May best | 23°C / 14°C | 24°C / 13°C | 14days (120 mm) Wet | 9.9h Good | 74% Muggy | 8.1 Very High | Excellent | View Details |
| June best | 28°C / 18°C | 31°C / 19°C | 11days (103 mm) Wet | 11.5h Excellent | 70% Muggy | 9.2 Very High | Excellent | View Details |
| July | 30°C / 21°C | 33°C / 23°C | 12days (123 mm) Wet | 11.8h Excellent | 75% Muggy | 9 Very High | Fair | View Details |
| August best | 29°C / 20°C | 32°C / 22°C | 10days (97 mm) Wet | 11.1h Excellent | 73% Muggy | 8.1 Very High | Good | View Details |
| September best | 27°C / 17°C | 28°C / 17°C | 7days (71 mm) Good | 10h Excellent | 69% Muggy | 6.9 High | Excellent | View Details |
| October best | 20°C / 11°C | 19°C / 9°C | 9days (75 mm) Wet | 7.9h Good | 68% Muggy | 4.9 Moderate | Good | View Details |
| November | 12°C / 4°C | 9°C / 0°C | 8days (87 mm) Wet | 6.4h Fair | 70% Muggy | 3.4 Moderate | Poor | View Details |
| December | 7°C / -1°C | 4°C / -5°C | 10days (88 mm) Wet | 5.2h Fair | 73% Muggy | 2.5 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Bloomington are May, June, August, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Bloomington, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Bloomington is July, with average daytime highs of 30°C (86°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Bloomington is January, with average overnight lows of -4°C (26°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Bloomington is March, averaging 133mm of precipitation across 12 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Bloomington runs through May, March, April, July, with the heaviest rainfall in May. Based on 10-year averages for Bloomington.
Bloomington receives approximately 102 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Bloomington.
The least favorable months to visit Bloomington are January, February, December, primarily due to very cold temperatures. For the best conditions, consider May, June, August, September, October instead.
The annual average UV index in Bloomington is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Bloomington is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Bloomington rarely sees significant snowfall but does experience frost, averaging 13 frost days during the colder months.
Average wind speeds in Bloomington are 15 km/h (9 mph). The windiest month is April with peak winds reaching 18 km/h (11 mph) (gusts up to 44 km/h / 27 mph).
Bloomington averages 4 clear-sky days per month with overall cloud cover around 59%. The clearest skies occur in September.
The annual average dew point in Bloomington is 8°C (46°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Bloomington has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Bloomington ranges from 7°C (45°F) to 17°C (63°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Bloomington. It earns a climate score of 8.1/10 with Excellent.
For June in Bloomington, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 28°C (83°F) and 11 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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