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
September marks a gentle change in average high-temperature, declining from August's moderately hot 77.5°F (25.3°C) to a pleasant 71.1°F (21.7°C). During the nights in September, an average low-temperature of 52.3°F (11.3°C) is observed in Pierson.Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.8 days and typically collects 1.3" (33mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Pierson, Michigan, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 7:06 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:24 pm EDT.
Sunshine
In Pierson, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Pierson, MI
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in September
Pierson, 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
Pierson, MI
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Pierson, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Pierson, MI
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is October (3.07").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in September
Pierson, MI
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in September
Pierson, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (7.01").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Pierson, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Pierson, 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 0min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Pierson, 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 (7.1 days).
Average UV index in September
Pierson, 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, November and December (UV index 1).
Average cloud cover in September
Pierson, MI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Pierson, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, October and November (6mi).
The month with the lowest visibility is January (4mi).
Pierson, Michigan, USA
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