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
September's arrival subtly correlates with a reduction in the average high-temperature, down from a warm 83.1°F (28.4°C) in August to a still moderately hot 77.2°F (25.1°C). Nighttime temperatures in September average to a refreshing 58.6°F (14.8°C).Humidity
The months with the lowest humidity in Greenhills are August through October, with an average relative humidity of 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 9.3 days and typically collects 0.63" (16mm) of precipitation.Snowfall
In Greenhills, Ohio, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Greenhills, sunrise is at 7:07 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index in Greenhills is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. 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.
Frequently asked questions
What are September temperatures in Greenhills?
What are the least humid months in Greenhills?
What is the average humidity in September in Greenhills?
What is the driest month in Greenhills?
How many days does it rain in September in Greenhills?
When it does not snow in Greenhills?
How many hours of daylight does Greenhills have in September?
When are sunrise and sunset in September in Greenhills?
How many hours of sunshine does Greenhills have in September?
What is the UV index reading in September in Greenhills?
Average temperature in September
Greenhills, OH
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in September
Greenhills, OH
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Greenhills, OH
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Greenhills, OH
- Average humidity in September: 74%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are August, September and October (74%).
Average rainfall in September
Greenhills, OH
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.42").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in September
Greenhills, OH
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is November (6.5 days).
Average snowfall in September
Greenhills, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Greenhills, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Greenhills, OH
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Greenhills, OH
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (14 days).
Average UV index in September
Greenhills, OH
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Greenhills, OH
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Greenhills, OH
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Greenhills, Ohio, USA
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