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
As September begins, there is a minor decrease in the average high-temperature, softly falling from a warm 75.4°F (24.1°C) in August to a pleasant 68.9°F (20.5°C). Hartwick records a steady low-temperature average of 49.1°F (9.5°C) during September.Humidity
In Hartwick, the average relative humidity in September is 81%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.4 days and typically collects 1.5" (38mm) of precipitation.Snowfall
June through September are months without snowfall in Hartwick.Daylight
In September, the average length of the day in Hartwick is 12h and 29min.On the first day of September in Hartwick, sunrise is at 6:25 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:42 pm EDT.
Sunshine
In September, the average sunshine in Hartwick is 8.7h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 3 in September transforms into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Hartwick?
What is the average humidity in September in Hartwick?
What is the driest month in Hartwick?
How many days does it rain in September in Hartwick?
When it does not snow in Hartwick?
Does it snow in Hartwick in September?
How many hours of daylight does Hartwick have in September?
What time are sunrise and sunset in September in Hartwick?
How many hours of sunshine does Hartwick have in September?
What is the UV index reading in September in Hartwick?
Average temperature in September
Hartwick, NY
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (26.4°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in September
Hartwick, 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
Hartwick, NY
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Hartwick, NY
- Average humidity in September: 81%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in September
Hartwick, NY
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in September
Hartwick, NY
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
Hartwick, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hartwick, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hartwick, NY
- Average daylight in September: 12h and 3min
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 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days in September
Hartwick, NY
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (6.3 days).
Average UV index in September
Hartwick, NY
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Hartwick, NY
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Hartwick, NY
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Hartwick, New York, USA
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