September weather forecastBlack River, MI
September
Weather in September
September, the first month of the autumn in Black River, is still a refreshing month, with an average temperature ranging between max 67.1°F (19.5°C) and min 54.3°F (12.4°C).Temperature
The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a warm 73.9°F (23.3°C) in August to a refreshing 67.1°F (19.5°C). The average nighttime temperature in Black River lowers to a fresh 54.3°F (12.4°C) throughout September.Humidity
In Black River, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 11.3 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Black River, there are 119.4 rainfall days, and 13.9" (353mm) of precipitation is accumulated.Snowfall
In Black River, Michigan, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September in Black River, sunrise is at 6:56 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:15 pm EDT.
Sunshine
The average sunshine in September is 8h.UV index
The average daily maximum UV index in September in Black River, Michigan, is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 3 in September translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Black River, MI
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is August (60.3°F).
The coldest months (with the lowest average low temperature) are January and February (18°F).
Average pressure in September
Black River, MI
- Average pressure in September: 30.02"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
Black River, MI
- Average wind speed in September: 8.7mph
The windiest months (with the highest average wind speed) are January and December (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
Black River, 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 May (73%).
Average rainfall in September
Black River, MI
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in September
Black River, MI
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is October (14.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
Black River, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Black River, MI
- 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
Black River, MI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in September
Black River, MI
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is May (17.8 days).
The month with the least sunshine days is January (8.4 days).
Average UV index in September
Black River, 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, November and December (UV index 1).
Average cloud cover in September
Black River, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Black River, 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).
