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
A moderate decline in average high-temperatures is noted in September, moving from a moderately hot 78.4°F (25.8°C) in August to a pleasant 71.2°F (21.8°C). In the month of September, the nighttime temperature in Rock Hill, New York, dips to a steady average of 50.9°F (10.5°C).Humidity
The average relative humidity in September in Rock Hill is 80%.Rainfall
In September, in Rock Hill, the rain falls for 11.9 days. Throughout September, 1.81" (46mm) of precipitation is accumulated. In Rock Hill, during the entire year, the rain falls for 153.7 days and collects up to 26.73" (679mm) of precipitation.Snowfall
In Rock Hill, snow does not fall in June through September.Daylight
In Rock Hill, the average length of the day in September is 12h and 28min.On the first day of September in Rock Hill, New York, sunrise is at 6:25 am and sunset at 7:31 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:41 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index in Rock Hill, New York, is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 3 during September translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
What is the average September temperature in Rock Hill?
What is the average humidity in September in Rock Hill?
How many days does it rain in September in Rock Hill?
When it does not snow in Rock Hill?
Does it snow in Rock Hill in September?
How many hours of daylight does Rock Hill have in September?
When are sunrise and sunset in September in Rock Hill?
How long on average sun shines in September in Rock Hill?
How high is the UV index in September in Rock Hill?
Average temperature in September
Rock Hill, NY
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Rock Hill, 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
Rock Hill, NY
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Rock Hill, NY
- Average humidity in September: 80%
The months with the highest relative humidity are February and December (85%).
The month with the lowest relative humidity is July (77%).
Average rainfall in September
Rock Hill, NY
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is May (2.8").
The driest months (with the least rainfall) are January and February (1.65").
Average rainfall days in September
Rock Hill, NY
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in September
Rock Hill, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Rock Hill, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rock Hill, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Rock Hill, NY
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in September
Rock Hill, NY
- Average UV index in September: 3
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, February, March, October, November and December (UV index 2).
Average cloud cover in September
Rock Hill, NY
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in September
Rock Hill, NY
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (5mi).
The months with the lowest visibility are May and September (4mi).
Rock Hill, New York, USA
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