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
A mild shift in the average high-temperature occurs in September, reducing from a warm 78.3°F (25.7°C) in August to a pleasant 72.5°F (22.5°C). Mendon usually reports an average low-temperature of 54.1°F (12.3°C) during the month of September.Humidity
In September, the average relative humidity in Mendon is 79%.Rainfall
In Mendon, in September, during 12.6 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Mendon, during the entire year, the rain falls for 139.9 days and collects up to 20.63" (524mm) of precipitation.Snowfall
In Mendon, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 7:08 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:24 pm EDT.
Sunshine
In Mendon, the average sunshine in September is 7.8h.UV index
In Mendon, the average daily maximum UV index in September 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 the ordinary person.Note: In September, an average UV index of 4 transforms into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Mendon in September?
What is the average humidity in September in Mendon?
How much 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?
When are sunrise and sunset in September?
How many hours of sunshine does Mendon have in September?
What is the UV index reading in September?
Average temperature in September
Mendon, MI
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.9°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°F).
Average pressure in September
Mendon, 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
Mendon, MI
- Average wind speed in September: 7.3mph
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 (6.4mph).
Average humidity in September
Mendon, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are March, April and October (77%).
Average rainfall in September
Mendon, MI
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is November (1.02").
Average rainfall days in September
Mendon, MI
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in September
Mendon, 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 and September (0").
Average snowfall days in September
Mendon, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mendon, 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 0min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Mendon, MI
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is March (15.2 days).
The month with the least sunshine days is February (10.8 days).
Average UV index in September
Mendon, MI
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Mendon, MI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Mendon, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Mendon, Michigan, USA
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