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
As Plainwell enters September, the average high-temperature subtly lowers from the a warm 78.3°F (25.7°C) of August to an agreeable 72.5°F (22.5°C). Plainwell, in September, experiences an average temperature of 54°F (12.2°C) at night.Humidity
In Plainwell, the average relative humidity in September is 78%.Rainfall
In Plainwell, during September, the rain falls for 11.5 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Plainwell, during the entire year, the rain falls for 138.6 days and collects up to 18.7" (475mm) of precipitation.Snowfall
In Plainwell, snow does not fall in June through October.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 7:08 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:25 pm EDT.
Sunshine
In September, the average sunshine is 8.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Plainwell in September?
What is the average humidity in September in Plainwell?
How much does it rain in Plainwell in September?
When it does not snow in Plainwell?
How many hours of daylight does Plainwell have in September?
What time are sunrise and sunset in September in Plainwell?
How many hours of sunshine does Plainwell have in September?
What is the UV index intensity in September in Plainwell?
Average temperature in September
Plainwell, 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 (28.6°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 (18.3°F).
Average pressure in September
Plainwell, 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
Plainwell, MI
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Plainwell, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in September
Plainwell, MI
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are February and November (1.02").
Average rainfall days in September
Plainwell, MI
- Average rainfall days in September: 11.5 days
The months with the highest number of rainy days are May and October (15.4 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Plainwell, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Plainwell, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Plainwell, MI
- Average daylight in September: 12h and 3min
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 1min
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 30min).
Average sunshine days in September
Plainwell, MI
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in September
Plainwell, 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
Plainwell, MI
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Plainwell, 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).
Plainwell, Michigan, USA
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