September weather forecast
Saint Ignace, MI

Weather in September

September, the first month of the autumn, in Saint Ignace, is also an enjoyable month, with average temperature ranging between max 64.8°F (18.2°C) and min 53.1°F (11.7°C).

Temperature

In September, the average high-temperature marginally drops, from a pleasant 71.1°F (21.7°C) in August, to an enjoyable 64.8°F (18.2°C). The average low-temperature, in September, is 53.1°F (11.7°C).

Humidity

In September, the average relative humidity is 79%.

Rainfall

In Saint Ignace, it is raining for 11.4 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, in Saint Ignace, there are 131 rainfall days, and 21.22" (539mm) of precipitation is accumulated.

Snowfall

In Saint Ignace snow does not fall in June through September.

Ocean temperature

In September, the average ocean temperature in Saint Ignace is 64.9°F (18.3°C).
Note: For most, swimming in 64.9°F (18.3°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In Saint Ignace, the average length of the day is 12.5h.

Sunshine

In Saint Ignace, the average sunshine in September is 7.8h.

UV index

In Saint Ignace, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
[Resources]

FAQ

What is the average humidity in September in Saint Ignace?

In September, the average relative humidity in Saint Ignace, Michigan, is 79%.

How many days does it rain in September in Saint Ignace?

In Saint Ignace, Michigan, in September, it is raining for 11.4 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow in Saint Ignace?

In Saint Ignace snow does not fall in June through September.

Does it snow in Saint Ignace in September?

In Saint Ignace, Michigan, in September, it doesn't snow. In October, it regularly snows.

What is the ocean temperature in September in Saint Ignace?

In September, the average ocean temperature in Saint Ignace, Michigan, is 64.9°F (18.3°C). For most, swimming in 64.9°F (18.3°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Saint Ignace have in September?

In September, the average length of the day in Saint Ignace, Michigan, is 12.5h.

How many hours of sunshine does Saint Ignace have in September?

In Saint Ignace, the average sunshine in September is 7.8h.

What is the UV index intensity in September in Saint Ignace?

In September, the average daily maximum UV index in Saint Ignace, Michigan, is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in September
Saint Ignace, MI

Average temperature in September - Saint Ignace, MI
  • Average high temperature in September: 64.8°F

The warmest month (with the highest average high temperature) is July (71.4°F).
The month with the lowest average high temperature is January (23.4°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 (14.4°F).

[Resources]

Average pressure in September
Saint Ignace, MI

Average pressure in September - Saint Ignace, MI
  • Average pressure in September: 30.01"

The month with the highest atmospheric pressure is March (30.09").
The month with the lowest atmospheric pressure is June (29.92").

[Resources]

Average wind speed in September
Saint Ignace, MI

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

The windiest months (with the highest average wind speed) are November and December (10.9mph).
The calmest months (with the lowest average wind speed) are June and July (7.6mph).

[Resources]

Average humidity in September
Saint Ignace, MI

Average humidity in September - Saint Ignace, MI
  • Average humidity in September: 79%

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (75%).

[Resources]

Average rainfall in September
Saint Ignace, MI

Average rainfall in September - Saint Ignace, MI
  • Average rainfall in September: 1.73"

The wettest month (with the highest rainfall) is October (2.72").
The driest month (with the least rainfall) is January (1.3").

[Resources]

Average rainfall days in September
Saint Ignace, MI

Average rainfall days in September - Saint Ignace, MI
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (5.3 days).

[Resources]

Average snowfall in September
Saint Ignace, MI

Average snowfall in September - Saint Ignace, MI
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5.91").
Months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in September
Saint Ignace, MI

Average snowfall days in September - Saint Ignace, MI
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (21.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average sea temperature in September
Saint Ignace, MI

Average sea temperature in September - Saint Ignace, MI
  • Average sea temperature in September: 64.9°F

The best month for swimming (with the highest average sea temperature) is August (68.6°F).
The coldest month (with the lowest average sea temperature) is March (33.1°F).

[Resources]

Average daylight in September /
Average sunshine in September
Saint Ignace, MI

Average daylight in September / Average sunshine in September - Saint Ignace, MI
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in September: 7.8h

The month with the most sunshine is July (Average sunshine: 10.1h).
The month with the least sunshine is January (Average sunshine: 1.9h).

[Resources]

Average sunshine days in September
Saint Ignace, MI

Average sunshine days in September - Saint Ignace, MI
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is January (7.1 days).

[Resources]

Average UV index in September
Saint Ignace, MI

Average UV index in September - Saint Ignace, MI
  • Average UV index in September: 3

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 1).

[Resources]

Average cloud cover in September
Saint Ignace, MI

Average cloud cover in September - Saint Ignace, MI
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 80).
Months with the least cloud cover are July and August (Cloud cover 32).

[Resources]

Average visibility in September
Saint Ignace, MI

Average visibility in September - Saint Ignace, MI
  • Average visibility in September: 6mi

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location