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
September brings a slight decrease in the average high-temperature, shifting from a warm 77.9°F (25.5°C) in August to a pleasant 71.1°F (21.7°C). An average low-temperature of 51.3°F (10.7°C) is observed in Brownsville during the September nights.Humidity
In Brownsville, Minnesota, the average relative humidity in September is 80%.Rainfall
In Brownsville, in September, it is raining for 12.1 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, there are 130.5 rainfall days, and 26.5" (673mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:29 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:47 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Brownsville?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Brownsville have in September?
How high is the UV index in September?
Average temperature in September
Brownsville, MN
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (21.7°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (8.8°F).
Average pressure in September
Brownsville, MN
- 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 (29.89"Hg).
Average wind speed in September
Brownsville, MN
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Brownsville, MN
- Average humidity in September: 80%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Brownsville, MN
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is June (4.61").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in September
Brownsville, MN
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Brownsville, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brownsville, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brownsville, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Brownsville, MN
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (17.7 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in September
Brownsville, MN
- Average UV index in September: 3
The month with the highest UV index is 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
Brownsville, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Brownsville, MN
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).
Brownsville, Minnesota, USA
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