Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's agreeable 69.4°F (20.8°C) to a comfortable 63.5°F (17.5°C). Allouez records a mean low-temperature of 52.7°F (11.5°C) in September.Humidity
In September, the average relative humidity in Allouez is 79%.Rainfall
In September, the rain falls for 14.5 days. Throughout September, 1.77" (45mm) of precipitation is accumulated. In Allouez, during the entire year, the rain falls for 120.3 days and collects up to 22.28" (566mm) of precipitation.Snowfall
June through September are months without snowfall in Allouez, Michigan.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September, sunrise is at 7:13 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 7:34 pm EDT.
Sunshine
The average sunshine in September is 7.5h.UV index
In Allouez, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Allouez?
What is the average humidity in September in Allouez?
How much does it rain in Allouez in September?
When it does not snow in Allouez?
Does it snow in Allouez in September?
How many hours of daylight does Allouez have in September?
When are sunrise and sunset in September in Allouez?
How many hours of sunshine does Allouez have in September?
What is the UV index reading in September in Allouez?
Average temperature in September
Allouez, MI
- Average high temperature in September: 63.5°F
The warmest month (with the highest average high temperature) is August (69.4°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
Allouez, MI
- Average pressure in September: 29.99"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
Allouez, MI
- Average wind speed in September: 9.6mph
The windiest month (with the highest average wind speed) is January (12.7mph).
The calmest month (with the lowest average wind speed) is June (7.7mph).
Average humidity in September
Allouez, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Allouez, MI
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is October (2.4").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in September
Allouez, MI
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is September (14.5 days).
The month with the least rainy days is January (2.5 days).
Average snowfall in September
Allouez, MI
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Allouez, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Allouez, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 7h and 3min
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 30min).
Average sunshine days in September
Allouez, MI
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is July (16.4 days).
The month with the least sunshine days is January (5.3 days).
Average UV index in September
Allouez, MI
- Average UV index in September: 4
The months with the highest UV index are 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
Allouez, MI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 86).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Allouez, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
Allouez, Michigan, USA
Weather forecast for your location
2. Allow the app to use your location