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 entails a subtle temperature shift, as the average high-temperature eases from 82°F (27.8°C) in August to a still warm 76.3°F (24.6°C). In September, the nighttime temperature lowers to an average of 56.1°F (13.4°C).Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 14.1 days and accumulates 2.09" (53mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Gratiot, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:59 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:12 pm EDT.
Sunshine
In Gratiot, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September 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 average person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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 in Gratiot?
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?
When is the sunrise / sunset in September in Gratiot?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Gratiot, OH
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Gratiot, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Gratiot, OH
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Gratiot, OH
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are March, April and November (77%).
Average rainfall in September
Gratiot, OH
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in September
Gratiot, OH
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is May (19.8 days).
The months with the least rainy days are January and February (9.8 days).
Average snowfall in September
Gratiot, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.57").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Gratiot, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gratiot, OH
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Gratiot, OH
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.4 days).
Average UV index in September
Gratiot, OH
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Gratiot, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Gratiot, OH
- Average visibility in September: 5mi
The months with the highest visibility are March, April, June, October and November (6mi).
The months with the lowest visibility are January, February, May, July, August, September and December (5mi).
Gratiot, Ohio, USA
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