September weather forecastBrockway, MI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Brockway, Michigan, with an average temperature varying between 70.5°F (21.4°C) and 53.8°F (12.1°C).Temperature
Brockway's progression into September involves a gentle drop in the average high-temperature, from a warm 76.6°F (24.8°C) in August to an agreeable 70.5°F (21.4°C). Nighttime temperatures in Brockway hover around an average low of 53.8°F (12.1°C) in September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Brockway, in September, during 9.8 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 104.6 rainfall days, and 8.5" (216mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:56 am and sunset at 8:05 pm. On the last day of September, in Brockway, Michigan, sunrise is at 7:28 am and sunset at 7:13 pm EDT.
Sunshine
In September, the average sunshine in Brockway is 8h.UV index
In September, the average daily maximum UV index in Brockway is 3. 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: In September, the maximum UV index of 3 transforms into these recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Brockway, MI
- Average high temperature in September: 70.5°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in September: 53.8°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 (17.4°F).
Average pressure in September
Brockway, 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 (29.93"Hg).
Average wind speed in September
Brockway, MI
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Brockway, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in September
Brockway, MI
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in September
Brockway, MI
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is May (12.8 days).
The months with the least rainy days are January and February (4.3 days).
Average snowfall in September
Brockway, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brockway, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brockway, 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: 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: 2h and 54min).
Average sunshine days in September
Brockway, MI
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is December (19.4 days).
The month with the least sunshine days is July (14.6 days).
Average UV index in September
Brockway, MI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Brockway, MI
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Brockway, MI
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





