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
Transition into September marks a drop in the average high-temperature, moving from a warm 78.6°F (25.9°C) in August to an agreeable 69.4°F (20.8°C). Brainerd's temperature in September lowers to a consistent average of 49.1°F (9.5°C) during the nights.Humidity
In Brainerd, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 9.7 days. Throughout September, 1.14" (29mm) of precipitation is accumulated. In Brainerd, during the entire year, the rain falls for 115.5 days and collects up to 19.69" (500mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Brainerd, Minnesota, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 6:38 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:58 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Brainerd, MN
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (4.1°F).
Average pressure in September
Brainerd, MN
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Brainerd, MN
- Average wind speed in September: 7.2mph
The windiest months (with the highest average wind speed) are April and October (7.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Brainerd, MN
- Average humidity in September: 74%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Brainerd, MN
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is June (2.95").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in September
Brainerd, MN
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Brainerd, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (8.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brainerd, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brainerd, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Brainerd, MN
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is September (19.1 days).
The month with the least sunshine days is February (10 days).
Average UV index in September
Brainerd, 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, February, November and December (UV index 1).
Average cloud cover in September
Brainerd, MN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Brainerd, MN
- Average visibility in September: 6mi
The months with the highest visibility are May, June, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Brainerd, Minnesota, USA
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