September weather forecastBackus, MN
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Backus, Minnesota, with an average temperature ranging between max 68.4°F (20.2°C) and min 48.9°F (9.4°C).Temperature
September indicates a shift in the average high-temperature, from August's moderately hot 77.5°F (25.3°C) to an agreeable 68.4°F (20.2°C). In the month of September, the average low-temperature usually rests at a frosty 48.9°F (9.4°C).Humidity
The average relative humidity in September in Backus is 74%.Rainfall
In Backus, in September, during 11 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In Backus, during the entire year, the rain falls for 110.5 days and collects up to 17.87" (454mm) of precipitation.Snowfall
In Backus, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:16 am and sunset at 6:59 pm CDT.
Sunshine
In Backus, the average sunshine in September is 8.6h.UV index
In Backus, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Backus, MN
- Average high temperature in September: 68.4°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (17.2°F).
- Average low temperature in September: 48.9°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (3.2°F).
Average pressure in September
Backus, 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
Backus, MN
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Backus, MN
- Average humidity in September: 74%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Backus, MN
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is June (2.83").
The driest months (with the least rainfall) are January and February (0.59").
Average rainfall days in September
Backus, MN
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is January (2.1 days).
Average snowfall in September
Backus, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Backus, MN
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (19.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Backus, MN
- Average daylight in September: 12h and 30min
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 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 24min).
Average sunshine days in September
Backus, MN
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is June (11 days).
Average UV index in September
Backus, 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
Backus, MN
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Backus, MN
- Average visibility in September: 6mi
The months with the highest visibility are May, June, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).





