September weather forecastForest Hills, MI
September
Weather in September
September, the first month of the autumn in Forest Hills, is also an agreeable month, with an average temperature fluctuating between 72.1°F (22.3°C) and 52.7°F (11.5°C).Temperature
As August transitions into September, Forest Hills sees a gentle drop in the average high-temperature, transitioning from a moderately hot 78.4°F (25.8°C) to a pleasant 72.1°F (22.3°C). September witnesses an average low-temperature hovering around a fresh 52.7°F (11.5°C).Humidity
The average relative humidity in September is 78%.Rainfall
In Forest Hills, during September, the rain falls for 11.5 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Forest Hills, during the entire year, the rain falls for 142.8 days and collects up to 27.28" (693mm) of precipitation.Snowfall
In Forest Hills, snow does not fall in May through September.Daylight
In Forest Hills, the average length of the day in September is 12h and 29min.On the first day of September in Forest Hills, sunrise is at 7:07 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:24 pm EDT.
Sunshine
In September, the average sunshine is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Forest Hills, MI
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in September
Forest Hills, MI
- Average pressure in September: 30.03"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
Forest Hills, MI
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Forest Hills, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Forest Hills, MI
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in September
Forest Hills, MI
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
Forest Hills, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.63").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Forest Hills, 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 May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Forest Hills, 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 54min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 12min).
Average sunshine days in September
Forest Hills, MI
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is January (9.2 days).
Average UV index in September
Forest Hills, MI
- Average UV index in September: 4
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Forest Hills, MI
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Forest Hills, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, October and November (6mi).
The month with the lowest visibility is January (4mi).
