Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The start of September signals a gentle decrease in the average high-temperature, transitioning from a moderately hot 78.6°F (25.9°C) in August to a pleasant 71.4°F (21.9°C). Bloomington records an average nighttime low of 53.2°F (11.8°C) in September.Humidity
In Bloomington, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. In Bloomington, during the entire year, the rain falls for 124.8 days and collects up to 22.72" (577mm) of precipitation.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 the month, sunrise is at 6:36 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:10 am and sunset at 6:54 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Around midday, solar radiation is most harmful; hence, exposure should be limited. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Bloomington have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Bloomington have in September?
What is the UV index reading in September?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
Bloomington, Minnesota, USA
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