September weather forecastDefiance, OH
September
Weather in September
September, the first month of the autumn in Defiance, is still a warm month, with an average temperature fluctuating between 73.8°F (23.2°C) and 55.6°F (13.1°C).Temperature
The arrival of September marks a slight shift to an average high-temperature of a still warm 73.8°F (23.2°C) from August's 79°F (26.1°C). Defiance, in September, witnesses an average low-temperature of 55.6°F (13.1°C).Humidity
In Defiance, Ohio, the average relative humidity in September is 79%.Rainfall
In Defiance, during September, the rain falls for 13 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, in Defiance, there are 160.2 rainfall days, and 27.56" (700mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall in Defiance, Ohio.Daylight
In September, the average length of the day in Defiance is 12h and 28min.On the first day of September, sunrise is at 7:04 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:20 pm EDT.
Sunshine
The average sunshine in September in Defiance is 8h.UV index
In Defiance, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Defiance, OH
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in September
Defiance, 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
Defiance, OH
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in September
Defiance, 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
Defiance, OH
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in September
Defiance, OH
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in September
Defiance, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Defiance, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Defiance, OH
- Average daylight in September: 12h and 30min
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 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 24min).
Average sunshine days in September
Defiance, OH
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in September
Defiance, 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
Defiance, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Defiance, OH
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, August and September (5mi).
