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
The arrival of September correlates with a minor temperature reduction, down from August's warm 77.5°F (25.3°C) to a pleasant 70°F (21.1°C). An average low-temperature of 49.6°F (9.8°C) is recorded in the month of September in Harkness, New York.Humidity
In September, the average relative humidity in Harkness is 78%.Rainfall
In Harkness, in September, during 8.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Harkness, during the entire year, the rain falls for 106.7 days and collects up to 8.9" (226mm) of precipitation.Snowfall
In Harkness, snow does not fall in June through September.Daylight
The average length of the day in September in Harkness is 12h and 30min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:36 pm EDT.
Sunshine
The average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September in Harkness is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. When the Sun is at its strongest around midday, find shade and limit exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What are the temperatures in Harkness in September?
What is the average humidity in September in Harkness?
How many days does it rain in September in Harkness?
When it does not snow in Harkness?
Does it snow in Harkness in September?
What is the average length of the day in September in Harkness?
When are sunrise and sunset in September in Harkness?
How long on average sun shines in September in Harkness?
How high is the UV index in September in Harkness?
Average temperature in September
Harkness, NY
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in September
Harkness, NY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Harkness, NY
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Harkness, NY
- Average humidity in September: 78%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Harkness, NY
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is August (1.18").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Harkness, NY
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in September
Harkness, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Harkness, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Harkness, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in September
Harkness, NY
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is July (15.1 days).
Average UV index in September
Harkness, NY
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Harkness, NY
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Harkness, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May, July, August, November and December (6mi).
The months with the lowest visibility are January, February, March, June, September and October (5mi).
Harkness, New York, USA
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