September weather forecastGrosse Pointe Shores, MI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Grosse Pointe Shores, Michigan, with temperature in the range of an average low of 58.3°F (14.6°C) and an average high of 71.4°F (21.9°C).Temperature
With the arrival of September, Grosse Pointe Shores experiences a modest decline in average high-temperatures, transitioning from a warm 77.9°F (25.5°C) in August to an agreeable 71.4°F (21.9°C). An average nighttime temperature of 58.3°F (14.6°C) is observed in Grosse Pointe Shores during September.Humidity
The average relative humidity in September in Grosse Pointe Shores is 75%.Rainfall
In Grosse Pointe Shores, Michigan, in September, it is raining for 9.8 days, with typically 0.43" (11mm) of accumulated precipitation. In Grosse Pointe Shores, during the entire year, the rain falls for 105.5 days and collects up to 7.36" (187mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
In Grosse Pointe Shores, Michigan, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:57 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:14 pm EDT.
Sunshine
In Grosse Pointe Shores, the average sunshine in September is 8.4h.UV index
In Grosse Pointe Shores, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 4 in September transforms into this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grosse Pointe Shores, MI
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 58.3°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in September
Grosse Pointe Shores, 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
Grosse Pointe Shores, MI
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Grosse Pointe Shores, MI
- Average humidity in September: 75%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Grosse Pointe Shores, MI
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is May (0.91").
The driest month (with the least rainfall) is February (0.35").
Average rainfall days in September
Grosse Pointe Shores, MI
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is July (12.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in September
Grosse Pointe Shores, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Grosse Pointe Shores, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grosse Pointe Shores, MI
- Average daylight in September: 12h and 30min
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 6min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Grosse Pointe Shores, MI
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in September
Grosse Pointe Shores, MI
- Average UV index in September: 4
The 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).
Average cloud cover in September
Grosse Pointe Shores, MI
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Grosse Pointe Shores, MI
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
