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 sea temperature 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
Ashtabula registers an average high-temperature of an agreeable 70.7°F (21.5°C) at the commencement of September, closely related to the preceding month. During September, Ashtabula experiences an average low-temperature of 58.6°F (14.8°C) at night.Humidity
The months with the lowest humidity are July through September, with an average relative humidity of 78%.Rainfall
In Ashtabula, in September, during 16.7 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, there are 181 rainfall days, and 36.34" (923mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Ocean temperature
In Ashtabula, the average seawater temperature in September is 70.3°F (21.3°C).Note: The enjoyment of swimming decreases for most when the surface water temperature is 70.3°F (21.3°C). Breathing control becomes increasingly challenging as temperatures descend below 69.8°F (21°C).
Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:56 pm. On the last day of September, in Ashtabula, sunrise is at 7:19 am and sunset at 7:06 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index in Ashtabula is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the least humid month?
What is the average humidity in September in Ashtabula?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How cold is the water in September in Ashtabula?
How many hours of daylight does Ashtabula have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Ashtabula, OH
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in September
Ashtabula, 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
Ashtabula, OH
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Ashtabula, OH
- Average humidity in September: 78%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July, August and September (78%).
Average rainfall in September
Ashtabula, OH
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is June (3.94").
The driest months (with the least rainfall) are February and November (2.4").
Average rainfall days in September
Ashtabula, OH
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in September
Ashtabula, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Ashtabula, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Ashtabula, 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
Ashtabula, OH
- Average daylight in September: 12h and 3min
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 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in September
Ashtabula, OH
- Average sunshine days in September: 11 days
The month with the most sunshine days is September (11 days).
The month with the least sunshine days is January (5.9 days).
Average UV index in September
Ashtabula, 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
Ashtabula, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Ashtabula, OH
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Ashtabula, Ohio, USA
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