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
The onset of September is marked by a minor decrease in temperature, transitioning from a moderately hot 77.7°F (25.4°C) in August to a pleasant 71.8°F (22.1°C). Throughout September, Grand Ledge's nights cool down to an average of 52.7°F (11.5°C).Humidity
In Grand Ledge, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 10.4 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. In Grand Ledge, during the entire year, the rain falls for 131 days and collects up to 15.16" (385mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 7:04 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:35 am and sunset at 7:21 pm EDT.
Sunshine
In Grand Ledge, the average sunshine in September is 8h.UV index
In Grand Ledge, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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 many days does it rain in September in Grand Ledge?
When it does not snow in Grand Ledge?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Grand Ledge, MI
- Average high temperature in September: 71.8°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 (27.1°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in September
Grand Ledge, 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 (29.93"Hg).
Average wind speed in September
Grand Ledge, MI
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Grand Ledge, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Grand Ledge, MI
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is May (2.17").
The driest months (with the least rainfall) are February and November (0.79").
Average rainfall days in September
Grand Ledge, MI
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in September
Grand Ledge, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Grand Ledge, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grand Ledge, 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 0min
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 42min).
Average sunshine days in September
Grand Ledge, MI
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in September
Grand Ledge, 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).
Average cloud cover in September
Grand Ledge, MI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in September
Grand Ledge, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February and September (5mi).
Grand Ledge, Michigan, USA
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