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 September, Grelton experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 78.8°F (26°C) in August to a still moderately hot 73.9°F (23.3°C). Throughout September, Grelton's nights cool down to an average of 55.6°F (13.1°C).Humidity
In September, the average relative humidity is 79%.Rainfall
In Grelton, in September, during 13.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, there are 165.5 rainfall days, and 27.24" (692mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 7:03 am and sunset at 8:08 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:19 pm EDT.
Sunshine
In September, the average sunshine is 8h.UV index
In Grelton, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Grelton have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Grelton have in September?
What is the UV index reading in September?
Average temperature in September
Grelton, OH
- Average high temperature in September: 73.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in September
Grelton, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Grelton, OH
- Average wind speed in September: 6.7mph
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 (6mph).
Average humidity in September
Grelton, OH
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Grelton, OH
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is December (1.61").
Average rainfall days in September
Grelton, OH
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in September
Grelton, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Grelton, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grelton, OH
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 0min
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 18min).
Average sunshine days in September
Grelton, OH
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in September
Grelton, OH
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Grelton, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Grelton, OH
- 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).
Grelton, Ohio, USA
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