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
With the onset of September, the average high-temperature subtly recedes from August's warm 82°F (27.8°C) to a still moderately hot 74.3°F (23.5°C). An average low-temperature of 53.2°F (11.8°C) is recorded in the month of September in Firthcliffe.Humidity
In September, the average relative humidity is 79%.Rainfall
January and September are months with the least rain in Firthcliffe when the rain falls for 11 days and typically aggregates up to 1.54" (39mm) of rain.Snowfall
June through September are months without snowfall in Firthcliffe, New York.Daylight
The average length of the day in September in Firthcliffe is 12h and 28min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:28 pm. On the last day of September, sunrise is at 6:52 am and sunset at 6:39 pm EDT.
Sunshine
In September, the average sunshine is 8.4h.UV index
In Firthcliffe, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Firthcliffe?
What is the average humidity in September in Firthcliffe?
What is the driest month in Firthcliffe?
How much does it rain in Firthcliffe in September?
When it does not snow in Firthcliffe?
Does it snow in Firthcliffe in September?
What is the average length of the day in September in Firthcliffe?
When is the sunrise / sunset in September in Firthcliffe?
How long on average sun shines in September in Firthcliffe?
What is the UV index intensity in September in Firthcliffe?
Average temperature in September
Firthcliffe, NY
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Firthcliffe, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Firthcliffe, NY
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are February and March (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Firthcliffe, NY
- Average humidity in September: 79%
The months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Firthcliffe, NY
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is October (2.64").
The driest months (with the least rainfall) are January and September (1.54").
Average rainfall days in September
Firthcliffe, NY
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Firthcliffe, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Firthcliffe, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Firthcliffe, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Firthcliffe, NY
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is January (20.6 days).
The months with the least sunshine days are May and June (13.5 days).
Average UV index in September
Firthcliffe, NY
- Average UV index in September: 4
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Firthcliffe, NY
- Average cloud cover in September: 43
The months with the most cloud cover are February, March and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Firthcliffe, NY
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Firthcliffe, New York, USA
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