September weather forecastNeptune, OH
September
Weather in September
September, the first month of the autumn in Neptune, is also a moderately hot month, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 73.8°F (23.2°C).Temperature
September's climate shows a minor adjustment in average high-temperatures to a still warm 73.8°F (23.2°C) from August's 79°F (26.1°C). An average low-temperature of 55.8°F (13.2°C) is recorded during the nights in September.Humidity
In Neptune, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 1.3" (33mm) of precipitation is accumulated. In Neptune, during the entire year, the rain falls for 137.8 days and collects up to 19.13" (486mm) of precipitation.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 7:05 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 September, the average sunshine is 7.9h.UV index
In Neptune, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Neptune, 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
Neptune, 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
Neptune, 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
Neptune, 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
Neptune, 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
Neptune, 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
Neptune, 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
Neptune, 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
Neptune, OH
- Average daylight in September: 12h and 24min
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 54min
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
Neptune, 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
Neptune, 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
Neptune, 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
Neptune, 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).
