September weather forecastBig Falls, MN
September
Weather in September
September, the first month of the autumn in Big Falls, is also an enjoyable month, with an average temperature varying between 47.3°F (8.5°C) and 66.9°F (19.4°C).Temperature
September brings a drop in Big Falls's average high-temperature, falling from a moderately hot 76.6°F (24.8°C) in August to a refreshing 66.9°F (19.4°C). The average low-temperature during September nights is a frosty 47.3°F (8.5°C).Humidity
In September, the average relative humidity is 75%.Rainfall
In Big Falls, during September, the rain falls for 11.5 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Big Falls, during the entire year, the rain falls for 107.3 days and collects up to 17.48" (444mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Big Falls, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:14 am and sunset at 6:55 pm CDT.
Sunshine
In September, the average sunshine is 8h.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: The maximum UV index of 4 during September translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Big Falls, MN
- Average high temperature in September: 66.9°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 (15.3°F).
- Average low temperature in September: 47.3°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 (0.7°F).
Average pressure in September
Big Falls, MN
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Big Falls, MN
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Big Falls, MN
- Average humidity in September: 75%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Big Falls, MN
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in September
Big Falls, MN
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in September
Big Falls, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Big Falls, MN
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Big Falls, MN
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in September
Big Falls, MN
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is August (16.7 days).
The month with the least sunshine days is March (11.1 days).
Average UV index in September
Big Falls, 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
Big Falls, MN
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Big Falls, MN
- Average visibility in September: 5mi
The months with the highest visibility are May, June and July (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
