August weather forecast
Port Sanilac, MI

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Weather in August

August, the last month of the summer in Port Sanilac, is also an agreeable month, with an average temperature fluctuating between 73°F (22.8°C) and 63.7°F (17.6°C).

Temperature

August, with its high-temperature average of 73°F (22.8°C) and a low-temperature average of 63.7°F (17.6°C), is the warmest month.

Humidity

The average relative humidity in August is 80%.

Rainfall

In August, in Port Sanilac, the rain falls for 14.4 days. Throughout August, 1.85" (47mm) of precipitation is accumulated. Throughout the year, there are 131.4 rainfall days, and 16.69" (424mm) of precipitation is accumulated.

Snowfall

In Port Sanilac, Michigan, snow does not fall in May through September.

Daylight

In August, the average length of the day in Port Sanilac is 13h and 55min.
On the first day of August in Port Sanilac, sunrise is at 6:20 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 8:06 pm EDT.

Sunshine

In August, the average sunshine in Port Sanilac is 10.1h.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index in Port Sanilac, Michigan. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: In August, the UV index of 5 transforms into the following advice:
Be vigilant - Preventing sunburn is recommended. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year in Port Sanilac?

In Port Sanilac, August is the month with the highest recorded average temperatures, measuring a high of 73°F (22.8°C) and a low of 63.7°F (17.6°C).

What are the temperatures in Port Sanilac in August?

An average high-temperature, in August, in Port Sanilac, is 73°F (22.8°C) and the average low-temperature is 63.7°F (17.6°C).

What is the average humidity in August in Port Sanilac?

In August, the average relative humidity in Port Sanilac, Michigan, is 80%.

How many days does it rain in August in Port Sanilac?

In Port Sanilac, Michigan, in August, it is raining for 14.4 days, with typically 1.85" (47mm) of accumulated precipitation.

When it does not snow in Port Sanilac?

In Port Sanilac, Michigan, snow does not fall in May through September.

How many hours of daylight does Port Sanilac have in August?

In Port Sanilac, the average day length in August is 13h and 55min.

When are sunrise and sunset in August in Port Sanilac?

On the first day of August in Port Sanilac, sunrise is at 6:20 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 8:06 pm EDT.

How many hours of sunshine does Port Sanilac have in August?

In Port Sanilac, the average sunshine duration in August is 10.1h.

What is the month with the highest UV index in Port Sanilac?

The months with the highest UV index in Port Sanilac are June through August, with an average maximum UV index of 5.

How high is the UV index in August in Port Sanilac?

The average daily maximum UV index in August in Port Sanilac, Michigan, is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
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 August
Port Sanilac, MI

Average temperature in August - Port Sanilac, MI
  • Average high temperature in August: 73°F

The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in August
Port Sanilac, MI

Average pressure in August - Port Sanilac, MI
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Port Sanilac, MI

Average wind speed in August - Port Sanilac, MI
  • Average wind speed in August: 9mph

The windiest month (with the highest average wind speed) is January (14.4mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

Average humidity in August
Port Sanilac, MI

Average humidity in August - Port Sanilac, MI
  • Average humidity in August: 80%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are September, October and November (78%).

Average rainfall in August
Port Sanilac, MI

Average rainfall in August - Port Sanilac, MI
  • Average rainfall in August: 1.85"

The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is February (0.67").

Average rainfall days in August
Port Sanilac, MI

Average rainfall days in August - Port Sanilac, MI
  • Average rainfall days in August: 14.4 days

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (4.4 days).

Average snowfall in August
Port Sanilac, MI

Average snowfall in August - Port Sanilac, MI
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Port Sanilac, MI

Average snowfall days in August - Port Sanilac, MI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Port Sanilac, MI

Average daylight in August / Average sunshine in August - Port Sanilac, MI
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

Average sunshine days in August
Port Sanilac, MI

Average sunshine days in August - Port Sanilac, MI
  • Average sunshine days in August: 13.7 days

The month with the most sunshine days is June (15.8 days).
The month with the least sunshine days is February (10.7 days).

Average UV index in August
Port Sanilac, MI

Average UV index in August - Port Sanilac, MI
  • Average UV index in August: 5

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 and December (UV index 1).

Average cloud cover in August
Port Sanilac, MI

Average cloud cover in August - Port Sanilac, MI
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in August
Port Sanilac, MI

Average visibility in August - Port Sanilac, MI
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Port Sanilac, Michigan, USA

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