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 onset of September brings a small shift in high-temperatures, falling from 84.7°F (29.3°C) in August to a still moderately hot 78.1°F (25.6°C). Throughout September, Rossmore braces for a considerable drop from daytime highs, with an average low-temperature of 56.3°F (13.5°C).Humidity
In Rossmore, the average relative humidity in September is 77%.Rainfall
The month with the least rainfall in Rossmore is September, when the rain falls for 13.5 days and typically collects 1.85" (47mm) of precipitation.Snowfall
In Rossmore, snow does not fall in June through September.Daylight
In September, the average length of the day in Rossmore is 12h and 25min.On the first day of September in Rossmore, sunrise is at 6:58 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:12 pm EDT.
Sunshine
In Rossmore, the average sunshine in September is 8.1h.UV index
In Rossmore, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Take precautions - Protection against sun damage is advised. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Frequently asked questions
What is the temperature in September in Rossmore?
What is the average humidity in September in Rossmore?
What is the driest month in Rossmore?
How many days does it rain in September in Rossmore?
When it does not snow in Rossmore?
Does it snow in Rossmore in September?
How many hours of daylight does Rossmore have in September?
What time are sunrise and sunset in September in Rossmore?
How many hours of sunshine does Rossmore have in September?
What is the UV index reading in September in Rossmore?
Average temperature in September
Rossmore, WV
- Average high temperature in September: 78.1°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in September
Rossmore, WV
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Rossmore, WV
- Average wind speed in September: 4.2mph
The windiest months (with the highest average wind speed) are January, February and April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in September
Rossmore, WV
- Average humidity in September: 77%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April, June, July, August and November (76%).
Average rainfall in September
Rossmore, WV
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in September
Rossmore, WV
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is November (10.8 days).
Average snowfall in September
Rossmore, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Rossmore, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rossmore, WV
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Rossmore, WV
- Average sunshine days in September: 13.6 days
The months with the most sunshine days are October and November (17 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Rossmore, WV
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Rossmore, WV
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Rossmore, WV
- Average visibility in September: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Rossmore, West Virginia, USA
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