September weather forecast
Gibraltar, MI

Weather in September

September, the first month of the autumn, in Gibraltar, is also an agreeable month, with average temperature fluctuating between 72°F (22.2°C) and 59.2°F (15.1°C).

Temperature

In Gibraltar, Michigan, the average high-temperature in September marginally drops, from a warm 77.5°F (25.3°C) in August, to an agreeable 72°F (22.2°C). In Gibraltar, in September, the average low-temperature is 59.2°F (15.1°C).

Humidity

In September, the average relative humidity is 76%.

Rainfall

In Gibraltar, during 13.5 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Gibraltar, during the entire year, the rain falls for 151.6 days and collects up to 26.97" (685mm) of precipitation.

Snowfall

June through October are months without snowfall in Gibraltar.

Ocean temperature

In Gibraltar, Michigan,, the average water temperature is 70.5°F (21.4°C).
Note: For swimming, a surface water temperature of 70.5°F (21.4°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In September, the average length of the day in Gibraltar is 12.5h.

Sunshine

In Gibraltar, Michigan, the average sunshine is 8.3h.

UV index

In Gibraltar, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the average humidity in September in Gibraltar?

The average relative humidity in September in Gibraltar is 76%.

How much does it rain in Gibraltar in September?

In Gibraltar, during September, the rain falls for 13.5 days and regularly aggregates up to 1.89" (48mm) of precipitation.

When it does not snow in Gibraltar?

June through October are months without snowfall in Gibraltar.

What is the ocean temperature in September in Gibraltar?

In September, the average ocean temperature in Gibraltar is 70.5°F (21.4°C). Swimming in 70.5°F (21.4°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in September in Gibraltar?

The average length of the day in September in Gibraltar, Michigan, is 12.5h.

How long on average sun shines in September in Gibraltar?

In Gibraltar, Michigan, the average sunshine in September is 8.3h.

What is the UV index reading in September in Gibraltar?

In Gibraltar, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
Gibraltar, MI

Average temperature in September - Gibraltar, MI
  • Average high temperature in September: 72°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (29.5°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 (19.8°F).

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Average pressure in September
Gibraltar, MI

Average pressure in September - Gibraltar, MI
  • Average pressure in September: 30.04"

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in September
Gibraltar, MI

Average wind speed in September - Gibraltar, MI
  • Average wind speed in September: 8.4mph

The windiest months (with the highest average wind speed) are January and November (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in September
Gibraltar, MI

Average humidity in September - Gibraltar, MI
  • Average humidity in September: 76%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in September
Gibraltar, MI

Average rainfall in September - Gibraltar, MI
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is December (1.26").

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Average rainfall days in September
Gibraltar, MI

Average rainfall days in September - Gibraltar, MI
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (6.5 days).

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Average snowfall in September
Gibraltar, MI

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

The month with the highest snowfall is February (4.17").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Gibraltar, MI

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

The month with the highest number of snowfall days is January (10.3 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average sea temperature in September
Gibraltar, MI

Average sea temperature in September - Gibraltar, MI
  • Average sea temperature in September: 70.6°F

The best month for swimming (with the highest average sea temperature) is August (75.4°F).
The coldest month (with the lowest average sea temperature) is February (32.7°F).

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

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

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in September: 8.3h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 3.1h).

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Average sunshine days in September
Gibraltar, MI

Average sunshine days in September - Gibraltar, MI
  • Average sunshine days in September: 14 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (10.3 days).

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Average UV index in September
Gibraltar, MI

Average UV index in September - Gibraltar, MI
  • Average UV index in September: 4

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).

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Average cloud cover in September
Gibraltar, MI

Average cloud cover in September - Gibraltar, MI
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 67).
Months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in September
Gibraltar, MI

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

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

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