September weather forecast
Bloomington, MN

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Weather in September

September cradles the transition from warm summer to cooler fall with temperatures, daylight hours, and sunshine taking a moderate dip. Deciduous trees prepare to put on a colorful display and the pace of life subtly slows down. By the end of the month, autumn spirit fills the air, while the weather remains pleasing. The temperature drops down from summer highs to range from 53.2°F (11.8°C) to 71.4°F (21.9°C), offering a respite from earlier heat.

Temperature

Bloomington experiences a moderate temperature shift at the start of September, with average high-temperatures adjusting a bit from a moderately hot 78.6°F (25.9°C) in August to an agreeable 71.4°F (21.9°C). An average low-temperature of 53.2°F (11.8°C) is recorded in the month of September.

Humidity

The average relative humidity in September in Bloomington is 74%.

Rainfall

In Bloomington, in September, during 12.5 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 124.8 rainfall days, and 22.72" (577mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September in Bloomington is 12h and 31min.
On the first day of September in Bloomington, sunrise is at 6:36 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm CDT.

Sunshine

In Bloomington, the average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. To guard against the harmful effects of the Sun, minimize exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

What are the temperatures in Bloomington in September?

In September, in Bloomington, the average high-temperature is 71.4°F (21.9°C), and the average low-temperature is 53.2°F (11.8°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in September in Bloomington?

The average relative humidity in September is 74%.

How many days does it rain in September in Bloomington?

In Bloomington, Minnesota, in September, it is raining for 12.5 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow in Bloomington?

June through September are months without snowfall in Bloomington.

Does it snow in Bloomington in September?

In Bloomington, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Bloomington?

The average day length in September in Bloomington is 12h and 31min.

What time are sunrise and sunset in September in Bloomington?

On the first day of September, sunrise is at 6:36 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm CDT.

How long on average sun shines in September in Bloomington?

The average sunshine duration in September is 8.9h.

What is the UV index reading in September in Bloomington?

In Bloomington, Minnesota, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
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 September
Bloomington, MN

Average temperature in September - Bloomington, MN
  • Average high temperature in September: 71.4°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (20.5°F).

  • Average low temperature in September: 53.2°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).

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Average pressure in September
Bloomington, MN

Average pressure in September - Bloomington, MN
  • Average pressure in September: 30"Hg

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in September
Bloomington, MN

Average wind speed in September - Bloomington, MN
  • Average wind speed in September: 7.7mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

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Average humidity in September
Bloomington, MN

Average humidity in September - Bloomington, MN
  • Average humidity in September: 74%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and May (71%).

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Average rainfall in September
Bloomington, MN

Average rainfall in September - Bloomington, MN
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in September
Bloomington, MN

Average rainfall days in September - Bloomington, MN
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is January (2.7 days).

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Average snowfall in September
Bloomington, MN

Average snowfall in September - Bloomington, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Bloomington, MN

Average snowfall days in September - Bloomington, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Bloomington, MN

Average daylight in September / Average sunshine in September - Bloomington, MN
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).

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Average sunshine days in September
Bloomington, MN

Average sunshine days in September - Bloomington, MN
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in September
Bloomington, MN

Average UV index in September - Bloomington, MN
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in September
Bloomington, MN

Average cloud cover in September - Bloomington, MN
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in September
Bloomington, MN

Average visibility in September - Bloomington, MN
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Bloomington, Minnesota, USA

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