September weather forecastSterling, MI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Sterling, Michigan, with an average temperature ranging between min 53.4°F (11.9°C) and max 70°F (21.1°C).Temperature
With the arrival of September, Sterling notices a mild change in the average high-temperature, sliding from August's warm 77°F (25°C) to an agreeable 70°F (21.1°C). Sterling, in September, witnesses an average low-temperature of 53.4°F (11.9°C).Humidity
In September, the average relative humidity in Sterling is 78%.Rainfall
The months with the least rainfall are February, September and November Rain falls for 10.8 days and accumulates 1.02" (26mm) of rain.Snowfall
May through October are months without snowfall in Sterling.Daylight
In September, the average length of the day in Sterling is 12h and 30min.On the first day of the month, sunrise is at 7:00 am and sunset at 8:11 pm. On the last day of September, in Sterling, sunrise is at 7:33 am and sunset at 7:18 pm EDT.
Sunshine
The average sunshine in September in Sterling, Michigan, is 7.9h.UV index
In September, the average daily maximum UV index in Sterling is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Around midday, solar radiation is most harmful; hence, exposure should be limited. 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
Sterling, MI
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Sterling, 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
Sterling, MI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Sterling, MI
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Sterling, MI
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.8").
The driest months (with the least rainfall) are February, September and November (1.02").
Average rainfall days in September
Sterling, MI
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Sterling, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Sterling, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sterling, MI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in September
Sterling, MI
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Sterling, 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, November and December (UV index 1).
Average cloud cover in September
Sterling, MI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Sterling, MI
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
