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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a warm 84°F (28.9°C) to a still moderately hot 77.9°F (25.5°C). Duke, in September, witnesses an average low-temperature of 56.5°F (13.6°C).Humidity
The months with the lowest humidity in Duke are April, August through November, with an average relative humidity of 76%.Rainfall
September is the month with the least rainfall in Duke. Rain falls for 11.9 days and accumulates 1.38" (35mm) of precipitation.Snowfall
May through October are months without snowfall in Duke.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 7:02 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:16 pm EDT.
Sunshine
In September, the average sunshine is 8.1h.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 exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Avoiding the Sun during its peak radiation time around midday is a healthy practice. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the usual temperature for Duke in September?
What are the least humid months in Duke?
What is the average humidity in September in Duke?
What is the driest month in Duke?
How much does it rain in Duke in September?
When it does not snow in Duke?
What is the average length of the day in September in Duke?
When are sunrise and sunset in September in Duke?
How long on average sun shines in September in Duke?
What is the UV index intensity in September in Duke?
Average temperature in September
Duke, OH
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in September
Duke, OH
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Duke, OH
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Duke, OH
- Average humidity in September: 76%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April, August, September, October and November (76%).
Average rainfall in September
Duke, OH
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in September
Duke, OH
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (8 days).
Average snowfall in September
Duke, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Duke, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Duke, 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 1min
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 42min).
Average sunshine days in September
Duke, OH
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in September
Duke, OH
- Average UV index in September: 4
The months with the highest UV index are 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
Duke, OH
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Duke, OH
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are January, May, July, August and September (5mi).
Duke, Ohio, USA
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