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
With September's onset, the weather reveals a slight temperature decrease, transitioning from a warm 81°F (27.2°C) in August to a still moderately hot 74.8°F (23.8°C). Dover records an average nighttime low-temperature of 54.9°F (12.7°C) throughout September.Humidity
In Dover, the average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 13.2 days and typically collects 1.85" (47mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:53 am and sunset at 7:57 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:09 pm EDT.
Sunshine
In Dover, the average sunshine in September is 8.2h.UV index
In Dover, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Take precautions - Protection against skin and eye damage is obliged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Dover have in September?
When is the sunrise / sunset in September in Dover?
How many hours of sunshine does Dover have in September?
What is the UV index intensity in September?
Average temperature in September
Dover, OH
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in September
Dover, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Dover, OH
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.1mph).
Average humidity in September
Dover, OH
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Dover, OH
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Dover, OH
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in September
Dover, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Dover, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dover, 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 18min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in September
Dover, OH
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (14.7 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in September
Dover, OH
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Dover, OH
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Dover, OH
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January and February (4mi).
Dover, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location