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
During September, Union Pier records an average high-temperature of an agreeable 71.4°F (21.9°C), marking a slight divergence from August's 76.6°F (24.8°C). During September, Union Pier observes a consistent average nighttime temperature of 59.2°F (15.1°C).Humidity
In Union Pier, the average relative humidity in September is 78%.Rainfall
In Union Pier, in September, during 13.4 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 152.6 rainfall days, and 26.3" (668mm) of precipitation is accumulated.Snowfall
In Union Pier, snow does not fall in June through October.Daylight
The average length of the day in September is 12h and 28min.On the first day of September in Union Pier, sunrise is at 7:13 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 7:29 pm EDT.
Sunshine
In September, the average sunshine in Union Pier is 8.4h.UV index
The average daily maximum UV index in September in Union Pier is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Union Pier in September?
What is the average humidity in September in Union Pier?
How much does it rain in Union Pier in September?
When it does not snow in Union Pier?
How many hours of daylight does Union Pier have in September?
What time are sunrise and sunset in September in Union Pier?
How many hours of sunshine does Union Pier have in September?
What is the UV index intensity in September in Union Pier?
Average temperature in September
Union Pier, MI
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Union Pier, MI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Union Pier, MI
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is January (12.8mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
Union Pier, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Union Pier, MI
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in September
Union Pier, MI
- Average rainfall days in September: 13.4 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is January (6 days).
Average snowfall in September
Union Pier, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.6").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Union Pier, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Union Pier, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Union Pier, MI
- Average sunshine days in September: 13 days
The month with the most sunshine days is March (14.4 days).
The month with the least sunshine days is January (10 days).
Average UV index in September
Union Pier, MI
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Union Pier, MI
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Union Pier, 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).
Union Pier, Michigan, USA
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