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 drop in Brookston's average high-temperature, falling from a warm 76.8°F (24.9°C) in August to an enjoyable 67.8°F (19.9°C). September brings an average low-temperature of 48.6°F (9.2°C) to Brookston.Humidity
The average relative humidity in September in Brookston is 77%.Rainfall
In September, in Brookston, the rain falls for 12.7 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. Throughout the year, in Brookston, there are 120.8 rainfall days, and 22.87" (581mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Brookston.Daylight
In Brookston, Minnesota, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:49 pm. On the last day of September, in Brookston, sunrise is at 7:08 am and sunset at 6:51 pm CDT.
Sunshine
The average sunshine in September is 8h.UV index
In September, the average daily maximum UV index in Brookston, Minnesota, is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What are the temperatures in Brookston in September?
What is the average humidity in September in Brookston?
How much does it rain in Brookston in September?
When it does not snow in Brookston?
Does it snow in Brookston in September?
What is the average length of the day in September in Brookston?
What time are sunrise and sunset in September in Brookston?
How long on average sun shines in September in Brookston?
What is the UV index reading in September in Brookston?
Average temperature in September
Brookston, MN
- Average high temperature in September: 67.8°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (16.2°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (2.5°F).
Average pressure in September
Brookston, MN
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Brookston, MN
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Brookston, MN
- Average humidity in September: 77%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Brookston, MN
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Brookston, MN
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in September
Brookston, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.6").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brookston, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brookston, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Brookston, MN
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in September
Brookston, MN
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Brookston, MN
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Brookston, MN
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Brookston, Minnesota, USA
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