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 is characterized by a slight reduction in average high-temperature, easing from a moderately hot 74.8°F (23.8°C) in August to an enjoyable 67.6°F (19.8°C). Walloon Lake's September nights cool down to an average low-temperature of 52°F (11.1°C).Humidity
In Walloon Lake, the average relative humidity in September is 78%.Rainfall
In Walloon Lake, in September, during 12.5 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 130.9 rainfall days, and 20.43" (519mm) of precipitation is accumulated.Snowfall
In Walloon Lake, snow does not fall in June through September.Daylight
In Walloon Lake, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 7:02 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:21 pm EDT.
Sunshine
In September, the average sunshine is 7.8h.UV index
In September, the average daily maximum UV index in Walloon Lake is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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 Walloon Lake in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Walloon Lake have in September?
When is the sunrise / sunset in September in Walloon Lake?
How many hours of sunshine does Walloon Lake have in September?
What is the UV index intensity in September?
Average temperature in September
Walloon Lake, MI
- Average high temperature in September: 67.6°F
The warmest months (with the highest average high temperature) are July and August (74.8°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is August (57.6°F).
The coldest month (with the lowest average low temperature) is February (16°F).
Average pressure in September
Walloon Lake, MI
- 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 (29.92"Hg).
Average wind speed in September
Walloon Lake, MI
- Average wind speed in September: 7.8mph
The windiest months (with the highest average wind speed) are January and December (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in September
Walloon Lake, MI
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Walloon Lake, MI
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is October (2.44").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days in September
Walloon Lake, MI
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is October (17.3 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Walloon Lake, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.4").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Walloon Lake, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Walloon Lake, MI
- 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 30min).
Average sunshine days in September
Walloon Lake, MI
- 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 (7.6 days).
Average UV index in September
Walloon Lake, MI
- 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, March, November and December (UV index 1).
Average cloud cover in September
Walloon Lake, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 85).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Walloon Lake, MI
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Walloon Lake, Michigan, USA
Weather forecast for your location
2. Allow the app to use your location