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 onset of September results in a small decrease in the average high-temperature, moderately receding from a moderately hot 77.7°F (25.4°C) in August to an agreeable 72°F (22.2°C). During September, the nighttime temperature averages to a cool 52.7°F (11.5°C).Humidity
The average relative humidity in September is 79%.Rainfall
In Onondaga, in September, it is raining for 10.4 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 110.7 rainfall days, and 10.47" (266mm) of precipitation is accumulated.Snowfall
In Onondaga, snow does not fall in June through September.Daylight
In Onondaga, the average length of the day in September is 12h and 28min.On the first day of September in Onondaga, sunrise is at 7:04 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:20 pm EDT.
Sunshine
In Onondaga, the average sunshine in September is 7.8h.UV index
In September, the average daily maximum UV index in Onondaga is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Onondaga in September?
What is the average humidity in September in Onondaga?
How much does it rain in Onondaga in September?
When it does not snow in Onondaga?
Does it snow in Onondaga in September?
What is the average length of the day in September in Onondaga?
What time are sunrise and sunset in September in Onondaga?
How many hours of sunshine does Onondaga have in September?
What is the UV index intensity in September in Onondaga?
Average temperature in September
Onondaga, MI
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Onondaga, 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
Onondaga, MI
- Average wind speed in September: 7.4mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Onondaga, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Onondaga, MI
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is May (1.54").
The driest months (with the least rainfall) are February, November and December (0.51").
Average rainfall days in September
Onondaga, MI
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in September
Onondaga, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Onondaga, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Onondaga, 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: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Onondaga, MI
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (13.6 days).
Average UV index in September
Onondaga, MI
- Average UV index in September: 3
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
Onondaga, MI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Onondaga, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
Onondaga, Michigan, USA
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