September weather forecastConneaut, OH

September

Weather in September

September indicates the commencement of fall in Conneaut with temperatures averaging a high of 69.6°F (20.9°C). Despite this drop in mercury, the city receives 2.68" (68mm) of rainfall. Marked departure from the hot August and the chiller October to follow, September is characterized by a balance of warm and cool weather. As hues of autumn start painting the landscape, it is a wonderful time to experience the outdoors.

Temperature

Conneaut signifies an average high-temperature of a pleasant 69.6°F (20.9°C) in September, closely mirroring the 74.8°F (23.8°C) of August. September's average low-temperature reading in Conneaut settles at a refreshing 60.4°F (15.8°C).

Humidity

The months with the lowest humidity are August, September and November, with an average relative humidity of 77%.

Rainfall

In September, in Conneaut, the rain falls for 15.3 days. Throughout September, 2.68" (68mm) of precipitation is accumulated. Throughout the year, in Conneaut, Ohio, there are 173.6 rainfall days, and 35.08" (891mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall.

Ocean temperature

In September, the average ocean temperature in Conneaut is 70.3°F (21.3°C).
Note: Most people do not find pleasure in swimming when the water temperature is 70.3°F (21.3°C). Breathing becomes increasingly difficult to manage as the water temperature drops from 69.8°F (21°C) to 59°F (15°C).

Daylight

In September, the average length of the day in Conneaut is 12h and 28min.
On the first day of September in Conneaut, Ohio, sunrise is at 6:48 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:05 pm EDT.

Sunshine

In Conneaut, the average sunshine in September is 8.7h.

UV index

In September, the average daily maximum UV index in Conneaut is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 4 during September translates into the following directions:
Act with care - The suggestion to avoid sunburn is emphasized. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

September temperatures in Conneaut vary between a high-temperature of 69.6°F (20.9°C) and a low-temperature of 60.4°F (15.8°C).

The months with the lowest humidity are August, September and November, with an average relative humidity of 77%.

In Conneaut, Ohio, the average relative humidity in September is 77%.

In Conneaut, during September, the rain falls for 15.3 days and regularly aggregates up to 2.68" (68mm) of precipitation.

June through October are months without snowfall.

In September, the average ocean temperature in Conneaut, Ohio, is 70.3°F (21.3°C). For swimming, a surface water temperature of 70.3°F (21.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

In Conneaut, the average day length in September is 12h and 28min.

In September, on the first day of the month, sunrise is at 6:48 am and sunset at 7:55 pm. On the last day of the month, in Conneaut, Ohio, sunrise is at 7:18 am and sunset at 7:05 pm EDT.

In September, the average sunshine duration in Conneaut is 8.7h.

The average daily maximum UV index in September in Conneaut, Ohio, is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sea temperature
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Conneaut, OH

  • Average high temperature in September: 69.6°F

The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in September: 60.4°F

The months with the highest average low temperature are July and August (66.4°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in September
Conneaut, OH

  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Conneaut, OH

  • Average wind speed in September: 10mph

The windiest month (with the highest average wind speed) is December (13.5mph).
The calmest month (with the lowest average wind speed) is July (8mph).

Average humidity in September
Conneaut, OH

  • Average humidity in September: 77%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are August, September and November (77%).

Average rainfall in September
Conneaut, OH

  • Average rainfall in September: 2.68"

The wettest month (with the highest rainfall) is June (4.25").
The driest month (with the least rainfall) is February (2.28").

Average rainfall days in September
Conneaut, OH

  • Average rainfall days in September: 15.3 days

The month with the highest number of rainy days is October (18.6 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in September
Conneaut, OH

  • Average snowfall in September: 0"

The month with the highest snowfall is February (4.84").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in September
Conneaut, 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, September and October (0 days).

Average sea temperature in September
Conneaut, OH

  • Average sea temperature in September: 70.3°F

The best month for swimming (with the highest average sea temperature) is August (75.7°F).
The coldest month (with the lowest average sea temperature) is February (32.7°F).

Average daylight in September /
Average sunshine in September
Conneaut, OH

  • Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 8h and 42min

The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

Average sunshine days in September
Conneaut, OH

  • Average sunshine days in September: 12.4 days

The month with the most sunshine days is September (12.4 days).
The month with the least sunshine days is January (6.3 days).

Average UV index in September
Conneaut, OH

  • Average UV index in September: 4

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in September
Conneaut, OH

  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in September
Conneaut, OH

  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).