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
Sebastian observes a minor difference in average high-temperatures between August's 79°F (26.1°C) and September's 73.8°F (23.2°C). The low-temperature averages to a moderate 55.8°F (13.2°C) during the nights of September.Humidity
The average relative humidity in September is 79%.Rainfall
In Sebastian, during September, the rain falls for 11.5 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, there are 137.8 rainfall days, and 19.13" (486mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 7:06 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:21 pm EDT.
Sunshine
In Sebastian, the average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index in Sebastian is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Act with care - The need to guard against sun damage is communicated. When the Sun is at its strongest around midday, find shade and limit exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Sebastian have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Sebastian, OH
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in September
Sebastian, OH
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Sebastian, OH
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Sebastian, OH
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Sebastian, OH
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in September
Sebastian, OH
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Sebastian, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Sebastian, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sebastian, 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: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Sebastian, OH
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in September
Sebastian, OH
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Sebastian, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Sebastian, OH
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Sebastian, Ohio, USA
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