September weather forecastGrandview Heights, OH
September
Weather in September
September, the first month of the autumn in Grandview Heights, is also a moderately hot month, with an average temperature varying between 57.7°F (14.3°C) and 76.1°F (24.5°C).Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from 82°F (27.8°C) in August to a still warm 76.1°F (24.5°C). During September, Grandview Heights experiences an average low-temperature of 57.7°F (14.3°C) at night.Humidity
In Grandview Heights, the average relative humidity in September is 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.1 days and typically collects 1.69" (43mm) of precipitation.Snowfall
In Grandview Heights, snow does not fall in May through September.Daylight
In Grandview Heights, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 7:00 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:15 pm EDT.
Sunshine
In Grandview Heights, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grandview Heights, OH
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Grandview Heights, 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 (29.94"Hg).
Average wind speed in September
Grandview Heights, OH
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Grandview Heights, OH
- Average humidity in September: 74%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Grandview Heights, OH
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Grandview Heights, OH
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (9.1 days).
Average snowfall in September
Grandview Heights, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Grandview Heights, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grandview Heights, OH
- Average daylight in September: 12h and 24min
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 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Grandview Heights, OH
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in September
Grandview Heights, OH
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Grandview Heights, OH
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Grandview Heights, 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).
