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 is marked by a subtle drop in average high-temperatures, transitioning from 82.6°F (28.1°C) in August to a still warm 76.1°F (24.5°C). An average low-temperature of 55.6°F (13.1°C) is recorded during the nights in September.Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 6.6 days and accumulates 0.28" (7mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Duncan Falls, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:11 pm EDT.
Sunshine
In Duncan Falls, the average sunshine in September is 8.4h.UV index
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 unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during September leads to these instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Duncan Falls have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Duncan Falls have in September?
What is the UV index intensity in September?
Average temperature in September
Duncan Falls, OH
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Duncan Falls, 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 (29.95"Hg).
Average wind speed in September
Duncan Falls, OH
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Duncan Falls, OH
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are April, August and November (77%).
Average rainfall in September
Duncan Falls, OH
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is June (0.79").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in September
Duncan Falls, OH
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is May (10.9 days).
The month with the least rainy days is November (4.4 days).
Average snowfall in September
Duncan Falls, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Duncan Falls, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.5 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
Duncan Falls, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Duncan Falls, OH
- Average sunshine days in September: 20.2 days
The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is May (15.6 days).
Average UV index in September
Duncan Falls, OH
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Duncan Falls, OH
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Duncan Falls, OH
- Average visibility in September: 5mi
The months with the highest visibility are March, April, October, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August and September (5mi).
Duncan Falls, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location