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
During the shift to September, Jacksonville records a mild decrease in average high-temperature, moving from a moderately hot 84.6°F (29.2°C) in August to a still warm 77.9°F (25.5°C). Jacksonville anticipates a stark contrast in temperature during September nights, with an average low of 56.3°F (13.5°C).Humidity
The average relative humidity in September is 76%.Rainfall
The month with the least rainfall in Jacksonville, Ohio, is September, when the rain falls for 12.4 days and typically collects 1.85" (47mm) of precipitation.Snowfall
May through October are months without snowfall in Jacksonville, Ohio.Daylight
The average length of the day in September in Jacksonville is 12h and 26min.On the first day of September, sunrise is at 6:57 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:11 pm EDT.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Undertake precautions - Guarding against sun damage is counselled. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Jacksonville?
What is the average humidity in September in Jacksonville?
What is the driest month in Jacksonville?
How much does it rain in Jacksonville in September?
When it does not snow in Jacksonville?
How many hours of daylight does Jacksonville have in September?
When are sunrise and sunset in September in Jacksonville?
How long on average sun shines in September in Jacksonville?
What is the UV index reading in September in Jacksonville?
Average temperature in September
Jacksonville, OH
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in September
Jacksonville, OH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Jacksonville, OH
- Average wind speed in September: 5mph
The windiest months (with the highest average wind speed) are January and February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in September
Jacksonville, OH
- Average humidity in September: 76%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Jacksonville, OH
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Jacksonville, OH
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (10 days).
Average snowfall in September
Jacksonville, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.43").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Jacksonville, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.7 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
Jacksonville, OH
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
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 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Jacksonville, OH
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is February (10.2 days).
Average UV index in September
Jacksonville, OH
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Jacksonville, OH
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Jacksonville, 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, February, March, May, June, July, August, September, October and December (5mi).
Jacksonville, Ohio, USA
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