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 mild shift in the average high-temperature occurs in September, reducing from a warm 77.5°F (25.3°C) in August to an agreeable 71.1°F (21.7°C). During September, New Haven observes a consistent average nighttime temperature of 54.9°F (12.7°C).Humidity
The average relative humidity in September is 78%.Rainfall
In New Haven, during September, the rain falls for 13.7 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, there are 153.6 rainfall days, and 22.52" (572mm) of precipitation is accumulated.Snowfall
In New Haven, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:56 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:13 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during September leads to these advisories:
Exercise prevention - Protecting skin and eyes from harm is required. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in New Haven?
Does it snow in September?
How many hours of daylight does New Haven have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
New Haven, MI
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in September
New Haven, MI
- Average pressure in September: 30.03"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
New Haven, MI
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
New Haven, MI
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
New Haven, MI
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is December (1.22").
Average rainfall days in September
New Haven, MI
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
New Haven, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
New Haven, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
New Haven, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
New Haven, MI
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is November (14.2 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in September
New Haven, MI
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
New Haven, MI
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
New Haven, 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).
New Haven, Michigan, USA
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