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 transition into September subtly indicates a reduction in the average high-temperature, down to an agreeable 72.5°F (22.5°C) from August's moderately hot 78.4°F (25.8°C). During the nights in September, the temperature averages to a fresh 52.7°F (11.5°C).Humidity
In Bloomington, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 2.72" (69mm) of precipitation is accumulated. In Bloomington, during the entire year, the rain falls for 138.5 days and collects up to 28.46" (723mm) of precipitation.Snowfall
In Bloomington, snow does not fall in June through September.Daylight
In Bloomington, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:46 pm CDT.
Sunshine
In Bloomington, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index in Bloomington is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September in Bloomington?
When it does not snow?
Does it snow in September?
What is the average length of the day in September in Bloomington?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Bloomington, WI
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in September
Bloomington, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Bloomington, WI
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Bloomington, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Bloomington, WI
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Bloomington, WI
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in September
Bloomington, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bloomington, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 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, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Bloomington, WI
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Bloomington, WI
- 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, November and December (UV index 1).
Average cloud cover in September
Bloomington, WI
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Bloomington, WI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Bloomington, Wisconsin, USA
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