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
With September's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 74.5°F (23.6°C) in August to an enjoyable 66.6°F (19.2°C). The average temperature drops to a chilly 47.8°F (8.8°C) during the night in the month of September.Humidity
In September, the average relative humidity is 80%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 1.69" (43mm) of precipitation is accumulated. In Long Lake, during the entire year, the rain falls for 120.5 days and collects up to 19.17" (487mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Long Lake, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:16 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:36 pm CDT.
Sunshine
The average sunshine in September is 7.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 3 during September leads to these advisories:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
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 in Long Lake?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Long Lake, WI
- Average high temperature in September: 66.6°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in September: 47.8°F
The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in September
Long Lake, WI
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Long Lake, WI
- Average wind speed in September: 7.4mph
The windiest months (with the highest average wind speed) are January and November (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in September
Long Lake, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Long Lake, WI
- Average rainfall in September: 1.69"
The wettest months (with the highest rainfall) are May and June (2.24").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in September
Long Lake, WI
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Long Lake, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.32").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Long Lake, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Long Lake, WI
- 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: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).
Average sunshine days in September
Long Lake, WI
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The months with the least sunshine days are January and February (7.8 days).
Average UV index in September
Long Lake, WI
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Long Lake, WI
- Average cloud cover in September: 45
The months with the most cloud cover are January and February (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Long Lake, WI
- Average visibility in September: 5mi
The months with the highest visibility are May and June (6mi).
The months with the lowest visibility are January and February (4mi).
Long Lake, Wisconsin, USA
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