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
September signifies a gentle decline in Summit Lake's average high-temperature, easing from a moderately hot 75.2°F (24°C) in August to a comfortable 67.1°F (19.5°C). An average nighttime temperature of 48°F (8.9°C) is noted in Summit Lake during the month of September.Humidity
The average relative humidity in September in Summit Lake, Wisconsin, is 80%.Rainfall
In Summit Lake, in September, it is raining for 12.4 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, in Summit Lake, there are 120.4 rainfall days, and 22.99" (584mm) of precipitation is accumulated.Snowfall
In Summit Lake, snow does not fall in June through September.Daylight
In Summit Lake, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:38 pm CDT.
Sunshine
In Summit Lake, the average sunshine in September is 7.6h.UV index
In Summit Lake, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 in September translates into these instructions:
Take precautions - Protection against skin and eye damage is obliged. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What is the usual temperature for Summit Lake in September?
What is the average humidity in September in Summit Lake?
How many days does it rain in September in Summit Lake?
When it does not snow in Summit Lake?
Does it snow in Summit Lake in September?
How many hours of daylight does Summit Lake have in September?
When is the sunrise / sunset in September in Summit Lake?
How many hours of sunshine does Summit Lake have in September?
What is the UV index intensity in September in Summit Lake?
Average temperature in September
Summit Lake, WI
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 48°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure in September
Summit 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
Summit Lake, WI
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are April and November (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in September
Summit 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 (72%).
Average rainfall in September
Summit Lake, WI
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is June (2.83").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in September
Summit Lake, WI
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is February (2.4 days).
Average snowfall in September
Summit Lake, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Summit Lake, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Summit Lake, WI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 12min).
Average sunshine days in September
Summit Lake, WI
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (10.8 days).
Average UV index in September
Summit 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, February, November and December (UV index 1).
Average cloud cover in September
Summit Lake, WI
- Average cloud cover in September: 46
The months with the most cloud cover are January and February (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in September
Summit Lake, WI
- Average visibility in September: 5mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January and February (4mi).
Summit Lake, Wisconsin, USA
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