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
During the shift to September, Martinsburg records a mild decrease in average high-temperature, moving from a moderately hot 74.7°F (23.7°C) in August to an agreeable 68.5°F (20.3°C). September nights experience a consistent temperature drop to a fresh 50°F (10°C).Humidity
In September, the average relative humidity is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 14.9 days and accumulates 2.32" (59mm) of precipitation.Snowfall
In Martinsburg, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:26 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:44 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Martinsburg?
What is the average humidity in September?
What is the driest month?
How much does it rain in Martinsburg in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Martinsburg have in September?
How high is the UV index in September?
Average temperature in September
Martinsburg, NY
- Average high temperature in September: 68.5°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in September: 50°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Martinsburg, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Martinsburg, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in September
Martinsburg, NY
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (78%).
Average rainfall in September
Martinsburg, NY
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is October (4.17").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in September
Martinsburg, NY
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is August (18.9 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in September
Martinsburg, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (14.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Martinsburg, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (22 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Martinsburg, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in September
Martinsburg, NY
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (4.7 days).
Average UV index in September
Martinsburg, 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 and December (UV index 1).
Average cloud cover in September
Martinsburg, NY
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Martinsburg, NY
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Martinsburg, New York, USA
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