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 arrival of September corresponds with a light shift in temperature, down from a moderately hot 78.4°F (25.8°C) in August to an agreeable 72.5°F (22.5°C). Jenison records a consistent low-temperature of 54.1°F (12.3°C) during September nights.Humidity
In Jenison, the average relative humidity in September is 78%.Rainfall
In Jenison, in September, it is raining for 11.9 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, there are 143.3 rainfall days, and 24.06" (611mm) of precipitation is accumulated.Snowfall
In Jenison, snow does not fall in June through September.Daylight
In Jenison, Michigan, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 7:08 am and sunset at 8:17 pm. On the last day of September, in Jenison, sunrise is at 7:40 am and sunset at 7:25 pm EDT.
Sunshine
The average sunshine in September in Jenison is 8.3h.UV index
In Jenison, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Jenison?
What is the average humidity in September in Jenison?
How much does it rain in Jenison in September?
When it does not snow in Jenison?
Does it snow in Jenison in September?
How many hours of daylight does Jenison have in September?
What time are sunrise and sunset in September in Jenison?
How many hours of sunshine does Jenison have in September?
What is the UV index intensity in September in Jenison?
Average temperature in September
Jenison, MI
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 54.1°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Jenison, 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
Jenison, MI
- Average wind speed in September: 7.4mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Jenison, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Jenison, MI
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is November (1.42").
Average rainfall days in September
Jenison, MI
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (4.7 days).
Average snowfall in September
Jenison, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Jenison, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jenison, 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 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in September
Jenison, MI
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in September
Jenison, 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
Jenison, MI
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Jenison, MI
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Jenison, Michigan, USA
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