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 transition into September in Copper Harbor shows a subtle variation to a still refreshing 59.5°F (15.3°C) from August's 62.6°F (17°C) in the average high-temperature. Copper Harbor, in September, logs an average low-temperature of 54.5°F (12.5°C), a subtle step down from daytime readings.Humidity
In Copper Harbor, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 14.6 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. Throughout the year, there are 116.2 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
In Copper Harbor, snow does not fall in June through September.Daylight
The average length of the day in September in Copper Harbor, Michigan, is 12h and 33min.On the first day of September, sunrise is at 7:11 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 7:32 pm EDT.
Sunshine
In September, the average sunshine in Copper Harbor is 7.4h.UV index
In September, the average daily maximum UV index in Copper Harbor is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Make use of precautions - Suggestions to resist sunburn are communicated. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Copper Harbor in September?
What is the average humidity in September in Copper Harbor?
How many days does it rain in September in Copper Harbor?
When it does not snow in Copper Harbor?
Does it snow in Copper Harbor in September?
What is the average length of the day in September in Copper Harbor?
When are sunrise and sunset in September in Copper Harbor?
How long on average sun shines in September in Copper Harbor?
What is the UV index reading in September in Copper Harbor?
Average temperature in September
Copper Harbor, MI
- Average high temperature in September: 59.5°F
The warmest month (with the highest average high temperature) is August (62.6°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is August (57.6°F).
The coldest month (with the lowest average low temperature) is February (17.2°F).
Average pressure in September
Copper Harbor, MI
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The months with the lowest atmospheric pressure are June and July (29.92"Hg).
Average wind speed in September
Copper Harbor, MI
- Average wind speed in September: 13mph
The windiest month (with the highest average wind speed) is January (17.8mph).
The calmest month (with the lowest average wind speed) is July (10mph).
Average humidity in September
Copper Harbor, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and July (85%).
The months with the lowest relative humidity are October and November (78%).
Average rainfall in September
Copper Harbor, MI
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is August (2.48").
The driest month (with the least rainfall) is March (1.46").
Average rainfall days in September
Copper Harbor, MI
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is February (1.4 days).
Average snowfall in September
Copper Harbor, MI
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Copper Harbor, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Copper Harbor, 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 2min
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 12min).
Average sunshine days in September
Copper Harbor, MI
- Average sunshine days in September: 13.4 days
The months with the most sunshine days are July and August (16.7 days).
The month with the least sunshine days is January (3.8 days).
Average UV index in September
Copper Harbor, MI
- Average UV index in September: 3
The months with the highest UV index are 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
Copper Harbor, MI
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 89).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Copper Harbor, 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 and December (4mi).
Copper Harbor, Michigan, USA
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