September weather forecastEast Grand Rapids, MI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in East Grand Rapids, Michigan, with an average temperature ranging between min 54°F (12.2°C) and max 72°F (22.2°C).Temperature
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a warm 78.6°F (25.9°C) in August to an agreeable 72°F (22.2°C). The nighttime temperature in East Grand Rapids, during September, averages of 54°F (12.2°C).Humidity
In September, the average relative humidity in East Grand Rapids is 77%.Rainfall
In September, in East Grand Rapids, the rain falls for 6.6 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. In East Grand Rapids, Michigan, during the entire year, the rain falls for 103.5 days and collects up to 9.02" (229mm) of precipitation.Snowfall
In East Grand Rapids, snow does not fall in May through October.Daylight
In East Grand Rapids, Michigan, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 7:07 am and sunset at 8:16 pm. On the last day of September, sunrise is at 7:39 am and sunset at 7:24 pm EDT.
Sunshine
In September, the average sunshine in East Grand Rapids is 8.2h.UV index
In September, the average daily maximum UV index in East Grand Rapids is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Direct Sun exposure should be minimized especially during midday when radiation is most intense. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
East Grand Rapids, MI
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in September
East Grand Rapids, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
East Grand Rapids, MI
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
East Grand Rapids, MI
- Average humidity in September: 77%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
East Grand Rapids, MI
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is March (0.47").
Average rainfall days in September
East Grand Rapids, MI
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is May (13 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
East Grand Rapids, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
East Grand Rapids, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
East Grand Rapids, MI
- Average daylight in September: 12h and 30min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
East Grand Rapids, MI
- Average sunshine days in September: 21 days
The month with the most sunshine days is September (21 days).
The month with the least sunshine days is April (13.4 days).
Average UV index in September
East Grand Rapids, MI
- Average UV index in September: 4
The months with the highest UV index are June, 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
East Grand Rapids, MI
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
East Grand Rapids, 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).
