September weather forecastMarquette, MI
September
Weather in September
September brings subtle hints of autumn to Marquette's weather with a decrease in average high temperature to 65.3°F (18.5°C), signaling the end of summer. The daylight hours noticeably decline, and the frequency of sunny days decreases as well. The transition from summer to fall becomes evident, setting the stage for the colorful spectacle of foliage that defines Michigan's autumns. Chilly mornings and evenings remind residents to slowly return their warm clothes to their wardrobes.Temperature
The advent of September in Marquette brings a subtle shift in temperature, with the average high moving from an agreeable 72.1°F (22.3°C) in August to a refreshing 65.3°F (18.5°C). In the month of September, Marquette's average low-temperature falls to a fresh 50°F (10°C).Humidity
In September, the average relative humidity is 79%.Rainfall
In Marquette, in September, it is raining for 13.6 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, there are 117.1 rainfall days, and 23.35" (593mm) of precipitation is accumulated.Snowfall
In Marquette, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:28 pm. On the last day of September, sunrise is at 7:47 am and sunset at 7:30 pm EDT.
Sunshine
In September, the average sunshine is 7.2h.UV index
The average daily maximum UV index in September in Marquette is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 3 in September transforms into this advice:
Make use of precautions - Suggestions to resist sunburn are communicated. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Marquette, MI
- Average high temperature in September: 65.3°F
The warmest month (with the highest average high temperature) is July (73.2°F).
The month with the lowest average high temperature is January (21.4°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is August (56.1°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure in September
Marquette, MI
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is March (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Marquette, MI
- Average wind speed in September: 8.7mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are June, July and August (7.5mph).
Average humidity in September
Marquette, MI
- Average humidity in September: 79%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Marquette, MI
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in September
Marquette, MI
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Marquette, MI
- Average snowfall in September: 0"
The month with the highest snowfall is December (9.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Marquette, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Marquette, MI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in September
Marquette, MI
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is July (15.8 days).
The month with the least sunshine days is January (7.3 days).
Average UV index in September
Marquette, 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, March, November and December (UV index 1).
Average cloud cover in September
Marquette, MI
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Marquette, MI
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (4mi).
