September weather forecastYoungstown, NY
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Youngstown, New York, with an average temperature ranging between min 59.9°F (15.5°C) and max 70.7°F (21.5°C).Temperature
September reveals a small adjustment in temperature, transitioning from an average high of a warm 76.3°F (24.6°C) in August to a pleasant 70.7°F (21.5°C). An average minimum temperature of 59.9°F (15.5°C) marks the month of September in Youngstown, New York.Humidity
September is the least humid month, with an average relative humidity of 74%.Rainfall
The months with the least rainfall are September and November Rain falls for 15.1 days and accumulates 2.17" (55mm) of rain.Snowfall
In Youngstown, New York, snow does not fall in June through September.Ocean temperature
In September, the average ocean temperature in Youngstown is 69.4°F (20.8°C).Note: In 69.4°F (20.8°C), swimming is not an enjoyable activity for most. As the temperature decreases from 69.8°F (21°C) to 59°F (15°C), it becomes harder to control breathing.
Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:58 pm EDT.
Sunshine
In September, the average sunshine in Youngstown is 9.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Youngstown, NY
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in September
Youngstown, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Youngstown, NY
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is January (13mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in September
Youngstown, NY
- Average humidity in September: 74%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).
Average rainfall in September
Youngstown, NY
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is July (3.15").
The driest months (with the least rainfall) are September and November (2.17").
Average rainfall days in September
Youngstown, NY
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Youngstown, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Youngstown, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Youngstown, NY
- Average sea temperature in September: 69.4°F
The best month for swimming (with the highest average sea temperature) is August (73.7°F).
The coldest month (with the lowest average sea temperature) is February (35°F).
Average daylight in September /
Average sunshine in September
Youngstown, NY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 9h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Youngstown, NY
- Average sunshine days in September: 13 days
The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).
Average UV index in September
Youngstown, NY
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Youngstown, NY
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Youngstown, NY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
