September weather forecast
Petoskey, MI

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A panorama of the scenic Petoskey, Michigan
A panorama of the scenic Petoskey, Michigan

Weather in September

September signals the onset of fall. As temperatures start to decline, a shift in the foliage can be noted. Minimal rain and temperatures averaging around 66.4°F (19.1°C) paint a clear picture of the transition. Diminishing daylight hours coupled with cooling temperatures calls for light jackets during early mornings and late evenings. As the vivid hues of fall start to emerge, vegetable farming and harvest-themed activities become common downtown.

Temperature

The start of September in Petoskey signals a gentle decrease in the average high-temperature, transitioning from an agreeable 73°F (22.8°C) in August to a refreshing 66.4°F (19.1°C). Petoskey records an average low-temperature of 53.1°F (11.7°C) throughout the month of September.

Humidity

In Petoskey, the average relative humidity in September is 78%.

Rainfall

In Petoskey, Michigan, in September, it is raining for 11.4 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, there are 129.6 rainfall days, and 23.43" (595mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Petoskey, the average length of the day in September is 12h and 31min.
On the first day of September, sunrise is at 7:02 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:21 pm EDT.

Sunshine

In Petoskey, the average sunshine in September is 7.8h.

UV index

In Petoskey, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In September, a daily UV index of 3 turns into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What are September temperatures in Petoskey?

In Petoskey, in September, the average high-temperature is 66.4°F (19.1°C), and the average low-temperature is 53.1°F (11.7°C).

What is the average humidity in September in Petoskey?

In September, the average relative humidity in Petoskey is 78%.

How much does it rain in Petoskey in September?

In September, in Petoskey, the rain falls for 11.4 days. Throughout September, 1.97" (50mm) of precipitation is accumulated.

When it does not snow in Petoskey?

June through September are months without snowfall in Petoskey.

Does it snow in Petoskey in September?

In Petoskey, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Petoskey have in September?

In Petoskey, Michigan, the average day length in September is 12h and 31min.

When are sunrise and sunset in September in Petoskey?

In September, on the first day of the month, sunrise is at 7:02 am and sunset at 8:16 pm. On the last day of the month, in Petoskey, sunrise is at 7:37 am and sunset at 7:21 pm EDT.

How long on average sun shines in September in Petoskey?

In Petoskey, the average sunshine duration in September is 7.8h.

How high is the UV index in September in Petoskey?

The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Petoskey, MI

Average temperature in September - Petoskey, MI
  • Average high temperature in September: 66.4°F

The warmest months (with the highest average high temperature) are July and August (73°F).
The month with the lowest average high temperature is January (25°F).

  • Average low temperature in September: 53.1°F

The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).

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Average pressure in September
Petoskey, MI

Average pressure in September - Petoskey, MI
  • Average pressure in September: 30.01"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).

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Average wind speed in September
Petoskey, MI

Average wind speed in September - Petoskey, MI
  • Average wind speed in September: 8.5mph

The windiest month (with the highest average wind speed) is December (11mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

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Average humidity in September
Petoskey, MI

Average humidity in September - Petoskey, MI
  • Average humidity in September: 78%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (74%).

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Average rainfall in September
Petoskey, MI

Average rainfall in September - Petoskey, MI
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is October (2.76").
The driest month (with the least rainfall) is February (1.34").

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Average rainfall days in September
Petoskey, MI

Average rainfall days in September - Petoskey, MI
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is October (18 days).
The month with the least rainy days is February (3.7 days).

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Average snowfall in September
Petoskey, MI

Average snowfall in September - Petoskey, MI
  • Average snowfall in September: 0"

The month with the highest snowfall is December (8.23").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Petoskey, MI

Average snowfall days in September - Petoskey, MI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (21.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Petoskey, MI

Average daylight in September / Average sunshine in September - Petoskey, MI
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 24min).

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Average sunshine days in September
Petoskey, MI

Average sunshine days in September - Petoskey, MI
  • Average sunshine days in September: 16 days

The month with the most sunshine days is September (16 days).
The month with the least sunshine days is January (6.2 days).

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Average UV index in September
Petoskey, MI

Average UV index in September - Petoskey, 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, November and December (UV index 1).

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Average cloud cover in September
Petoskey, MI

Average cloud cover in September - Petoskey, MI
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 85).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in September
Petoskey, MI

Average visibility in September - Petoskey, MI
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Petoskey, Michigan, USA

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