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
With the arrival of September, Grafton experiences a modest decline in average high-temperatures, transitioning from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.8°F (22.1°C). Grafton's average low-temperature during September nights is observed to be a mild 58.5°F (14.7°C).Humidity
In September, the average relative humidity is 78%.Rainfall
In Grafton, in September, it is raining for 14.2 days, with typically 2.05" (52mm) of accumulated precipitation. In Grafton, during the entire year, the rain falls for 163.6 days and collects up to 29.88" (759mm) of precipitation.Snowfall
In Grafton, snow does not fall in June through September.Daylight
In Grafton, Ohio, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:55 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:11 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In September, the average daily maximum UV index in Grafton, Ohio, is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the average September temperature in Grafton?
What is the average humidity in September in Grafton?
How much does it rain in Grafton in September?
When it does not snow in Grafton?
Does it snow in Grafton in September?
How many hours of daylight does Grafton have in September?
When are sunrise and sunset in September in Grafton?
How long on average sun shines in September in Grafton?
What is the UV index reading in September in Grafton?
Average temperature in September
Grafton, OH
- Average high temperature in September: 71.8°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 58.5°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Grafton, 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
Grafton, OH
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Grafton, OH
- Average humidity in September: 78%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Grafton, OH
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is June (3.58").
The driest months (with the least rainfall) are February and December (1.81").
Average rainfall days in September
Grafton, OH
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is May (17.5 days).
The months with the least rainy days are January and February (8.3 days).
Average snowfall in September
Grafton, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grafton, OH
- 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
Grafton, 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 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Grafton, OH
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is October (13.6 days).
The months with the least sunshine days are January and February (9 days).
Average UV index in September
Grafton, OH
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Grafton, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Grafton, OH
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Grafton, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location
