August weather forecast
Bloomington, IN

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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. The outdoor activities continue, albeit with shorter hours, due to the receding sunlight by month-end. The decrease in rainfall from July’s 2.72" (69mm) is a well-celebrated change, encouraging Bloomington’s residents to make the most of the remaining summer days.

Temperature

Bloomington registers an average high-temperature of a still warm 82.9°F (28.3°C) at the commencement of August, closely related to the preceding month. An average nighttime temperature of 63.9°F (17.7°C) is observed during August.

Heat index

In August, the heat index is estimated at a tropical 91.4°F (33°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

The average relative humidity in August is 79%.

Rainfall

In Bloomington, during August, the rain falls for 13.3 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 150.5 rainfall days, and 27.56" (700mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Bloomington, the average length of the day in August is 13h and 39min.
On the first day of August, sunrise is at 6:47 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 8:17 pm EDT.

Sunshine

In August, the average sunshine is 9.4h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 6 in August suggests the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

An average high-temperature, in August, in Bloomington, is 82.9°F (28.3°C) and the average low-temperature is 63.9°F (17.7°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 91.4°F (33°C).

What is the average humidity in August?

In August, the average relative humidity is 79%.

How much does it rain in August?

In Bloomington, in August, it is raining for 13.3 days, with typically 2.13" (54mm) of accumulated precipitation.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Bloomington have in August?

The average day length in August is 13h and 39min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:47 am and sunset at 8:57 pm. On the last day of the month, in Bloomington, sunrise is at 7:14 am and sunset at 8:17 pm EDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.4h.

When is the highest UV index?

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

What is the UV index reading in August in Bloomington?

In Bloomington, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Bloomington, IN

Average temperature in August - Bloomington, IN
  • Average high temperature in August: 82.9°F

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).

  • Average low temperature in August: 63.9°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 in August
Bloomington, IN

Average pressure in August - Bloomington, IN
  • Average pressure in August: 29.98"Hg

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 in August
Bloomington, IN

Average wind speed in August - Bloomington, IN
  • Average wind speed in August: 5.2mph

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 in August
Bloomington, IN

Average humidity in August - Bloomington, IN
  • Average humidity in August: 79%

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

Average rainfall in August
Bloomington, IN

Average rainfall in August - Bloomington, IN
  • Average rainfall in August: 2.13"

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 in August
Bloomington, IN

Average rainfall days in August - Bloomington, IN
  • Average rainfall days in August: 13.3 days

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 in August
Bloomington, IN

Average snowfall in August - Bloomington, IN
  • Average snowfall in August: 0"

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 in August
Bloomington, IN

Average snowfall days in August - Bloomington, IN
  • Average snowfall days in August: 0 days

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 in August /
Average sunshine in August
Bloomington, IN

Average daylight in August / Average sunshine in August - Bloomington, IN
  • Average daylight in August: 13h and 4min

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).

  • Average sunshine in August: 9h and 2min

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 in August
Bloomington, IN

Average sunshine days in August - Bloomington, IN
  • Average sunshine days in August: 14 days

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 in August
Bloomington, IN

Average UV index in August - Bloomington, IN
  • Average UV index in August: 6

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 cloud cover in August
Bloomington, IN

Average cloud cover in August - Bloomington, IN
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in August
Bloomington, IN

Average visibility in August - Bloomington, IN
  • Average visibility in August: 5mi

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

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