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 onset brings a negligible change in high-temperatures, falling from 82°F (27.8°C) in August to a still warm 76.1°F (24.5°C). Gahanna records a steady low-temperature average of 57.2°F (14°C) during September.Humidity
The average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall in Gahanna. Rain falls for 11 days and accumulates 1.02" (26mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:00 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine is 8h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Gahanna in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in Gahanna in September?
When it does not snow?
How many hours of daylight does Gahanna have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Gahanna, OH
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 57.2°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Gahanna, 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
Gahanna, OH
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Gahanna, OH
- Average humidity in September: 75%
The months with the highest relative humidity are January and February (82%).
The months with the lowest relative humidity are April, October and November (74%).
Average rainfall in September
Gahanna, OH
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is September (1.02").
Average rainfall days in September
Gahanna, OH
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in September
Gahanna, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Gahanna, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Gahanna, 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 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Gahanna, OH
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Gahanna, 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
Gahanna, 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
Gahanna, 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).
Gahanna, Ohio, USA
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