September weather forecastGarrison, MN
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Garrison, Minnesota, with an average temperature fluctuating between 49.5°F (9.7°C) and 68.7°F (20.4°C).Temperature
In September, the meteorological conditions change slightly, with the average high-temperature moving from a warm 76.8°F (24.9°C) in August to a pleasant 68.7°F (20.4°C). The average temperature during September nights in Garrison is registered at a chilly 49.5°F (9.7°C).Humidity
In September, the average relative humidity is 75%.Rainfall
In September, the rain falls for 10.2 days. Throughout September, 1.26" (32mm) of precipitation is accumulated. In Garrison, during the entire year, the rain falls for 109.6 days and collects up to 15.83" (402mm) of precipitation.Snowfall
June through September are months without snowfall in Garrison.Daylight
In Garrison, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 6:36 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:56 pm CDT.
Sunshine
In September, the average sunshine in Garrison is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Garrison, MN
- Average high temperature in September: 68.7°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (17.4°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).
Average pressure in September
Garrison, MN
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Garrison, MN
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Garrison, MN
- Average humidity in September: 75%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Garrison, MN
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is June (2.36").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Garrison, MN
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Garrison, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Garrison, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Garrison, MN
- Average daylight in September: 12h and 30min
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 36min
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
Garrison, MN
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is June (11 days).
Average UV index in September
Garrison, 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
Garrison, MN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Garrison, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
