September weather forecastSpring Lake, MN
September
Weather in September
September, the first month of the autumn in Spring Lake, is still a comfortable month, with an average temperature varying between 66.7°F (19.3°C) and 46.9°F (8.3°C).Temperature
As August transitions into September, Spring Lake sees a drop in the average high-temperature, transitioning from a moderately hot 76.6°F (24.8°C) to a comfortable 66.7°F (19.3°C). In September, Spring Lake records an average nighttime temperature of 46.9°F (8.3°C).Humidity
The average relative humidity in September is 75%.Rainfall
In Spring Lake, during September, the rain falls for 11.8 days and regularly aggregates up to 1.46" (37mm) of precipitation. In Spring Lake, during the entire year, the rain falls for 107.6 days and collects up to 17.52" (445mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Spring Lake, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:55 pm. On the last day of September, sunrise is at 7:14 am and sunset at 6:56 pm CDT.
Sunshine
In September, the average sunshine is 8h.UV index
In Spring Lake, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Spring Lake, MN
- Average high temperature in September: 66.7°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: 46.9°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
Spring Lake, MN
- Average pressure in September: 29.97"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
Spring Lake, 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
Spring Lake, 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
Spring Lake, MN
- Average rainfall in September: 1.46"
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
Spring Lake, MN
- Average rainfall days in September: 11.8 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
Spring Lake, 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
Spring Lake, 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
Spring Lake, MN
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- 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
Spring Lake, MN
- Average sunshine days in September: 15.7 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
Spring Lake, 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
Spring Lake, 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
Spring Lake, 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).





