September weather forecast
Brighton, MI

Weather in September

September, the first month of the autumn in Brighton, is still a pleasant month, with an average temperature ranging between max 71.6°F (22°C) and min 53.6°F (12°C).

Temperature

In September, the average high-temperature marginally drops from a warm 77.5°F (25.3°C) in August to a pleasant 71.6°F (22°C). In September, the average low-temperature is 53.6°F (12°C).

Humidity

In Brighton, the average relative humidity in September is 79%.

Rainfall

In Brighton, in September, it is raining for 13.7 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, in Brighton, there are 147.8 rainfall days, and 25.35" (644mm) of precipitation is accumulated.

Snowfall

In Brighton, snow does not fall in June through September.

Daylight

In September, the average length of the day in Brighton is 12h and 29min.
On the first day of September in Brighton, sunrise is at 7:00 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:18 pm EDT.

Sunshine

In Brighton, the average sunshine in September is 7.7h.

UV index

The average daily maximum UV index in September in Brighton is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 3 in September interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. 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.
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FAQ

What is the average humidity in September in Brighton?

The average relative humidity in September in Brighton, Michigan, is 79%.

How many days does it rain in September in Brighton?

In September, in Brighton, Michigan, the rain falls for 13.7 days. Throughout September, 1.85" (47mm) of precipitation is accumulated.

When it does not snow in Brighton?

June through September are months without snowfall.

Does it snow in Brighton in September?

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

How many hours of daylight does Brighton have in September?

The average day length in September in Brighton is 12h and 29min.

What time are sunrise and sunset in September in Brighton?

In September, on the first day of the month, sunrise is at 7:00 am and sunset at 8:09 pm. On the last day of the month, in Brighton, sunrise is at 7:31 am and sunset at 7:18 pm EDT.

How long on average sun shines in September in Brighton?

The average sunshine duration in September in Brighton is 7.7h.

How high is the UV index in September in Brighton?

In September, the average daily maximum UV index in Brighton, Michigan, is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.

Average temperature in September
Brighton, MI

Average temperature in September - Brighton, MI
  • Average high temperature in September: 71.6°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in September: 53.6°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in September
Brighton, MI

Average pressure in September - Brighton, MI
  • Average pressure in September: 30.04"Hg

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

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Average wind speed in September
Brighton, MI

Average wind speed in September - Brighton, MI
  • Average wind speed in September: 7.1mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

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Average humidity in September
Brighton, MI

Average humidity in September - Brighton, MI
  • Average humidity in September: 79%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in September
Brighton, MI

Average rainfall in September - Brighton, MI
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is December (1.18").

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Average rainfall days in September
Brighton, MI

Average rainfall days in September - Brighton, MI
  • Average rainfall days in September: 13.7 days

The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (4.4 days).

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Average snowfall in September
Brighton, MI

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

The month with the highest snowfall is February (5.35").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Brighton, MI

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

The month with the highest number of snowfall days is January (12.1 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
Brighton, MI

Average daylight in September / Average sunshine in September - Brighton, MI
  • Average daylight in September: 12h and 29min

The month with the longest days is June (Average daylight: 15h and 15min).
The month with the shortest days is December (Average daylight: 9h and 7min).

  • Average sunshine in September: 7.7h

The month with the most sunshine is July (Average sunshine: 10.1h).
The month with the least sunshine is January (Average sunshine: 2.7h).

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Average sunshine days in September
Brighton, MI

Average sunshine days in September - Brighton, MI
  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is December (17.3 days).
The month with the least sunshine days is May (10.1 days).

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Average UV index in September
Brighton, MI

Average UV index in September - Brighton, MI
  • Average UV index in September: 3

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Brighton, MI

Average cloud cover in September - Brighton, MI
  • Average cloud cover in September: 38

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in September
Brighton, MI

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

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

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