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
September's arrival signals a moderate reduction in the average high-temperature, easing from a moderately hot 85.6°F (29.8°C) in August to a still warm 79.5°F (26.4°C). Martha documents a marked decrease from day to night, with an average low of 57.7°F (14.3°C) throughout September.Humidity
In September, the average relative humidity in Martha, West Virginia, is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 1.89" (48mm) of precipitation.Snowfall
In Martha, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:59 am and sunset at 7:58 pm. On the last day of September, in Martha, sunrise is at 7:24 am and sunset at 7:13 pm EDT.
Sunshine
In Martha, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What is the temperature in September in Martha?
What is the average humidity in September in Martha?
What is the driest month in Martha?
How much does it rain in Martha in September?
When it does not snow in Martha?
Does it snow in Martha in September?
How many hours of daylight does Martha have in September?
What time are sunrise and sunset in September in Martha?
How long on average sun shines in September in Martha?
What is the UV index reading in September in Martha?
Average temperature in September
Martha, WV
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in September
Martha, WV
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Martha, WV
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is February (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Martha, WV
- Average humidity in September: 76%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Martha, WV
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Martha, WV
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is November (10.9 days).
Average snowfall in September
Martha, WV
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Martha, WV
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Martha, WV
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Martha, WV
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in September
Martha, 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
Martha, WV
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Martha, 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).
Martha, West Virginia, USA
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