Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
A subtle shift in Brooklyn's weather is observed as August turns into September, with the average high temperature reducing from a warm 77.5°F (25.3°C) to an agreeable 71.6°F (22°C). In September, Brooklyn reports a consistent average low-temperature of 53.8°F (12.1°C) during the nights.Humidity
In September, the average relative humidity is 80%.Rainfall
In September, the rain falls for 13.3 days. Throughout September, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 144.6 rainfall days, and 20.2" (513mm) of precipitation is accumulated.Snowfall
In Brooklyn, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 7:03 am and sunset at 8:10 pm. On the last day of September, sunrise is at 7:33 am and sunset at 7:19 pm EDT.
Sunshine
In September, the average sunshine is 7.9h.UV index
In Brooklyn, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during September translates into the following guidance:
Ensure safety - Imperative it is to shield skin and eyes from damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Brooklyn in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Brooklyn have in September?
What is the UV index reading in September?
Average temperature in September
Brooklyn, MI
- Average high temperature in September: 71.6°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 (27.9°F).
- Average low temperature in September: 53.8°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).
Average pressure in September
Brooklyn, 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).
Average wind speed in September
Brooklyn, MI
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in September
Brooklyn, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Brooklyn, MI
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in September
Brooklyn, MI
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Brooklyn, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Brooklyn, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Brooklyn, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- 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: 2h and 54min).
Average sunshine days in September
Brooklyn, MI
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Brooklyn, MI
- Average UV index in September: 4
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).
Average cloud cover in September
Brooklyn, MI
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Brooklyn, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
Brooklyn, Michigan, USA
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