September weather forecastWalled Lake, MI
September
Weather in September
September, the first month of the autumn in Walled Lake, is also an agreeable month, with an average temperature fluctuating between 55°F (12.8°C) and 72°F (22.2°C).Temperature
During the shift to September, Walled Lake records a mild decrease in average high-temperature, moving from a moderately hot 78.4°F (25.8°C) in August to a pleasant 72°F (22.2°C). During September, Walled Lake observes a consistent average nighttime temperature of 55°F (12.8°C).Humidity
In Walled Lake, the average relative humidity in September is 77%.Rainfall
In Walled Lake, during September, the rain falls for 13.5 days and regularly aggregates up to 1.93" (49mm) of precipitation. In Walled Lake, during the entire year, the rain falls for 155.3 days and collects up to 27.48" (698mm) of precipitation.Snowfall
In Walled Lake, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:59 am and sunset at 8:07 pm. On the last day of September, sunrise is at 7:30 am and sunset at 7:16 pm EDT.
Sunshine
The average sunshine in September is 7.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Be vigilant - Suggestions to stave off sun damage are provided. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Walled Lake, MI
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Walled Lake, MI
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Walled Lake, MI
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Walled Lake, MI
- Average humidity in September: 77%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Walled Lake, MI
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is December (1.61").
Average rainfall days in September
Walled Lake, MI
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in September
Walled Lake, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.3").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Walled Lake, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Walled Lake, MI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 7h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Walled Lake, MI
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is September (14.8 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in September
Walled Lake, MI
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Walled Lake, MI
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Walled Lake, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
