Climate and monthly weather forecast
Bloomington, IN

Share

The climate of Bloomington

Bloomington, Indiana, USA, experiences a Humid Subtropical climate, with no dry season, under the Köppen Climate Classification of Cfa. This Midwestern city's geographical position contributes to its variety of weather conditions throughout the year. Annual weather distinctly reflects changes in monthly parameters, showcasing considerable difference in temperatures, rainfall, humidity, daylight, UV index, and other factors.

Throughout the year, Bloomington experiences varying degrees of weather changes. High temperatures range from 35.6°F (2°C) in January to a peak of 84°F (28.9°C) in July. The lower spectrum of temperatures, on the other hand, shifts between 22.5°F (-5.3°C) and 65.8°F (18.8°C) over the year. These temperatures reveal stark contrasts between Bloomington's seasons.

Humidity in the city demonstrates a consistency, fluctuating from 75% in October to 82% during both January and May. The rainfall measurement demonstrates a similar trend, with the highest rainfall of 3.11" (79mm) recorded in April, and the lowest, 1.65" (42mm), during both September and October. Simultaneously, the city experiences varying hours of daylight from 9.5 hours in December to as high as 14.9 hours in June.

October imposes the highest percentage of sunshine days (18.9), while May provides the lowest (9.2). The UV index reaches a maximum of 6 from May to August, signaling stronger sun radiation during these months. Snowfall is confined to the colder timeframe, from 2.28" (58mm) in January dropping to no recorded snowfall from May to October.

The best time to visit Bloomington

Analysis of weather patterns suggests that the most pleasant time to visit Bloomington is from May to September. The city enters the season of warmer temperatures, ranging from 72.9°F (22.7°C) to 84°F (28.9°C), during this period, with the lowest average temperature being 55.8°F (13.2°C). It also enjoys the longest daylight duration, averaging between 14.3 hours and 14.9 hours daily, giving visitors ample time to explore and enjoy the city. Rainfall is moderate, ensuring a comfortable atmosphere without major disruptions to travel plans.

The worst time to visit Bloomington

The least desirable time to visit Bloomington would be during the cold months of January and February. The city experiences the lowest temperatures during this period, with highs fluctuating between 35.6°F (2°C) and 40.5°F (4.7°C) and lows dropping to between 22.5°F (-5.3°C) and 26.2°F (-3.2°C). It also records higher snowfall, with an average of 2.28" (58mm) in January and 1.5" (38mm) in February.

Spring weather in Bloomington

As Bloomington transitions from winter to spring, the city experiences a very significant weather shift. From March to May, the high temperature gradually increases from 51.6°F (10.9°C) to 72.9°F (22.7°C), and the low temperature rises from 36.1°F (2.3°C) to 55.8°F (13.2°C). March experiences the most rain, however, with precipitation reaching 2.56" (65mm), but rainfall decreases to 2.99" (76mm) by May. The city also experiences extended daylight hours during spring, from 12 hours in March to 14.3 hours in May.

Summer weather in Bloomington

Bloomington experiences its warmest weather from June through August, during which temperatures escalate to an average high between 81.3°F (27.4°C) and 84°F (28.9°C). The lowest temperatures during these months remain comfortably warm, fluctuating from 63.5°F (17.5°C) to 65.8°F (18.8°C). Despite the heat, rainfall is relatively low, with the least amount in August at 2.13" (54mm). Additionally, the city gets to enjoy extended periods of daylight, reaching its peak in June with 14.9 hours daily.

Autumn weather in Bloomington

Bloomington undergoes a gradual temperature drop in Autumn, from September to November. High temperatures decrease from 77.2°F (25.1°C) to 51.3°F (10.7°C), whereas low temperatures fall from 58.1°F (14.5°C) to 36.1°F (2.3°C). Rainfall shows a decreasing trend from 1.65" (42mm) in September to 1.97" (50mm) in November. In contrast, the average daily sunlight hours drop, signaling shorter days.

Winter weather in Bloomington

Witnessing a characteristic cold season from December to February, Bloomington's high temperatures range from 35.6°F (2°C) to 40.6°F (4.8°C), while the low temperatures fluctuate between 22.5°F (-5.3°C) and 29.3°F (-1.5°C). The city sees most of its snowfall during these months, with an average of 2.28" (58mm) in January. As winter peaks, daylight hours decrease, with the shortest daylight duration of 9.5 hours in December.

Weather in January

Bloomington, Indiana, starts the year with temperatures at their lowest and extended periods of overcast skies. In comparison to the next month, January tends to be colder and experiences higher snowfall, with an average of 2.28" (58mm). Weather in January »

Weather in February

As Bloomington enters February, a subtle shift in weather patterns is discernible. A modest spike in temperature is noticed from January's averages of 35.6°F (2°C), coupled with a reduction in snowfall. Prevailing conditions permit slight relief to the residents, who start shedding layers in anticipation of warmth. Weather in February »

Weather in March

March signals the arrival of Spring in Bloomington, inducing noticeable transformations in the city’s weather. The temperature begins to scale upward from February’s average low of 26.2°F (-3.2°C) along with a significant drop in snowfall. Weather in March »

Weather in April

Bloomington in April becomes more jovial, showing visible signs of bidding adieu to the harsh winters. A general sense of warmth is noticeable, with an average high temperature that scales up to 63.1°F (17.3°C) from March’s 51.6°F (10.9°C). Weather in April »

Weather in May

May in Bloomington marks the official transition to the summer season. There is a significant improvement in weather conditions, especially when contrasted with April’s 2.56" (65mm) of rainfall. A distinct flurry of activities revitalizes the city after the long winter and spring seasons. Weather in May »

Weather in June

Weather in Bloomington during June presents a quintessential summer scenario, featuring high temperatures and ample sunshine. Bloomington sees its highest average temperatures in June, peaking at 81.3°F (27.4°C) from May’s 72.9°F (22.7°C). Weather in June »

Weather in July

July in Bloomington proceeds to push the envelope further when it comes to summer warmth. The temperatures exceed June's peak and almost touch the sweltering level, the highest being 84°F (28.9°C). Simultaneously, the city's life continues unabated, shifting gracefully between long sunny days and cooler evenings. Weather in July »

Weather in August

With August, comes a slight relaxation in Bloomington's weather intensity. A minor drop in the average maximum temperature from 84°F (28.9°C) in July brings a subtle coolness in the city's air. As the month progresses, the weather gradually paves the way for the approaching fall. Weather in August »

Weather in September

September in Bloomington brings about untold transformations in its climate, signaling the commencement of Fall. A fall in temperature from August’s high of 82.9°F (28.3°C) introduces a fresh crispness to the air. Nature starts painting the city's foliage in hues of red, orange, and yellow. Weather in September »

Weather in October

Bloomington in October takes on a quaint charm as the Fall season sets in definitively. With temperatures receding from September’s high of 77.2°F (25.1°C), sweaters and light jackets make their first appearance for the season. Weather in October »

Weather in November

November amplifies the chill in Bloomington’s atmosphere, further plummeting from October’s average low of 46.9°F (8.3°C). Marks of vibrant autumn make way for the approaching winters, with the landscape turning a stark contrast of bare trees and fallen leaves. Weather in November »

Weather in December

December in Bloomington is a display of enchanting winters, characterized by dipping temperatures and increased snowfall. The average snowfall scales to 1.85" (47mm), biggest since January’s snowfall of 2.28" (58mm). It rings in the long-awaited festive season with the city beautifully festooned in Christmas decorations. Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Bloomington?

In Bloomington, January records the average lowest temperatures, peaking at 35.6°F (2°C) and reaching a low of 22.5°F (-5.3°C).

How much does it rain in Bloomington?

Throughout the year, there are 150.5 rainfall days, and 27.56" (700mm) of precipitation is accumulated.

When does it snow in Bloomington?

January through April, November and December are months with snowfall in Bloomington, Indiana.

How many days does it snow in Bloomington?

Throughout the year, there are 26.7 snowfall days, and 9.13" (232mm) of snow is accumulated.

What is the month with the lowest UV index in Bloomington?

The months with the lowest UV index are January, February, October and December, with an average maximum UV index of 2.

What is the snowiest month in Bloomington?

The month with the most snowfall is March, when snow falls for 4.3 days and typically aggregates up to 2.6" (66mm) of snow.

When is Daylight Saving Time (DST) in Bloomington?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the wettest month in Bloomington?

April is the month with the most rainfall in Bloomington. Rain falls for 15.3 days and accumulates 3.11" (79mm) of precipitation.

What are the most humid months in Bloomington?

The months with the highest humidity in Bloomington are May and December, with an average relative humidity of 82%.

When it does not snow in Bloomington?

In Bloomington, Indiana, snow does not fall in May through October.

What is the month with the highest UV index in Bloomington?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Bloomington, Indiana.

When are the longest days in Bloomington?

With an average of 14h and 54min of daylight, June has the longest days of the year in Bloomington.

What month has the most sunshine in Bloomington?

With an average of 10.2h of sunshine, June has the most sunshine of the year.

What month is the hottest in Bloomington?

July is the month when Bloomington's temperatures reach their peak, with averages of 84°F (28.9°C) and lows of 65.8°F (18.8°C).

What is the driest month in Bloomington?

September and October are months with the least rain when the rain falls for 12.4 days and typically aggregates up to 1.65" (42mm) of rain.

What is the least humid month in Bloomington?

With an average relative humidity of 75%, October is the least humid month in Bloomington.

What is the month with the shortest days in Bloomington?

December has the shortest days of the year in Bloomington, with an average of 9h and 30min of daylight.

What is the month with the least sunshine in Bloomington?

With an average of 4.2h of sunshine, December has the least sunshine of the year in Bloomington.

Average temperature
Bloomington, IN

Average temperature - Bloomington, IN

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.6°F).

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure
Bloomington, IN

Average pressure - Bloomington, IN

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Bloomington, IN

Average wind speed - Bloomington, IN

The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity
Bloomington, IN

Average humidity - Bloomington, IN

The months with the highest relative humidity are May and December (82%).
The month with the lowest relative humidity is October (75%).

Average rainfall
Bloomington, IN

Average rainfall - Bloomington, IN

The wettest month (with the highest rainfall) is April (3.11").
The driest months (with the least rainfall) are September and October (1.65").

Average rainfall days
Bloomington, IN

Average rainfall days - Bloomington, IN

The month with the highest number of rainy days is May (19.2 days).
The month with the least rainy days is January (7.9 days).

Average snowfall
Bloomington, IN

Average snowfall - Bloomington, IN

The month with the highest snowfall is March (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Bloomington, IN

Average snowfall days - Bloomington, IN

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Bloomington, IN

Average daylight / Average sunshine - Bloomington, IN

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

Average sunshine days
Bloomington, IN

Average sunshine days - Bloomington, IN

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (9.2 days).

Average UV index
Bloomington, IN

Average UV index - Bloomington, IN

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, October and December (UV index 2).

Average visibility
Bloomington, IN

Average visibility - Bloomington, IN

The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).

Bloomington, Indiana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location