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
In Clayton, the average high-temperature in September gently drops from a moderately hot 77.7°F (25.4°C) in August to an agreeable 72.3°F (22.4°C). Clayton experiences a mean temperature of 54.5°F (12.5°C) during September nights.Humidity
The average relative humidity in September is 80%.Rainfall
In Clayton, during September, the rain falls for 10.8 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Clayton, during the entire year, the rain falls for 129.9 days and collects up to 12.76" (324mm) of precipitation.Snowfall
In Clayton, snow does not fall in May through October.Daylight
In Clayton, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 7:03 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:19 pm EDT.
Sunshine
In September, the average sunshine is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, an average UV index of 4 transforms into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September in Clayton?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Clayton, MI
- Average high temperature in September: 72.3°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 (28.8°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in September
Clayton, MI
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Clayton, MI
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in September
Clayton, MI
- Average humidity in September: 80%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are March, April and October (77%).
Average rainfall in September
Clayton, MI
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is June (1.65").
The driest months (with the least rainfall) are January and December (0.63").
Average rainfall days in September
Clayton, MI
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Clayton, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Clayton, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Clayton, 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 12min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Clayton, MI
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Clayton, MI
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Clayton, MI
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Clayton, MI
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, August and September (5mi).
Clayton, Michigan, USA
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