September weather forecastMachipongo, VA
September
Weather in September
September, the first month of the autumn in Machipongo, is still a warm month, with an average temperature varying between 76.8°F (24.9°C) and 70.9°F (21.6°C).Temperature
The advent of September brings an average high-temperature of a still moderately hot 76.8°F (24.9°C), exhibiting minor difference from the previous month. Machipongo, during September nights, witnesses an average temperature marginally cooler than its daytime highs, at a pleasant 70.9°F (21.6°C).Humidity
In September, the average relative humidity in Machipongo is 75%.Rainfall
In Machipongo, during September, the rain falls for 11.6 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, in Machipongo, there are 131.1 rainfall days, and 13.54" (344mm) of precipitation is accumulated.Snowfall
In Machipongo, snow does not fall in April through December.Daylight
The average length of the day in September in Machipongo is 12h and 25min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:32 pm. On the last day of September, in Machipongo, sunrise is at 6:58 am and sunset at 6:47 pm EDT.
Sunshine
In Machipongo, the average sunshine in September is 9.5h.UV index
In Machipongo, Virginia, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 5 during September translates into the following guidance:
Undertake precautions - Guarding against sun damage is counselled. When the Sun is at its strongest around midday, find shade and limit 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
Average temperature in September
Machipongo, VA
- Average high temperature in September: 76.8°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (44.2°F).
- Average low temperature in September: 70.9°F
The month with the highest average low temperature is July (75.9°F).
The coldest month (with the lowest average low temperature) is January (36.5°F).
Average pressure in September
Machipongo, VA
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Machipongo, VA
- Average wind speed in September: 11.5mph
The windiest months (with the highest average wind speed) are January and March (13.4mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).
Average humidity in September
Machipongo, VA
- Average humidity in September: 75%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, October and November (74%).
Average rainfall in September
Machipongo, VA
- Average rainfall in September: 1.34"
The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is November (0.71").
Average rainfall days in September
Machipongo, VA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is August (15.1 days).
The months with the least rainy days are January and October (7.5 days).
Average snowfall in September
Machipongo, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Machipongo, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Machipongo, VA
- Average daylight in September: 12h and 24min
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: 9h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Machipongo, VA
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is August (12.7 days).
Average UV index in September
Machipongo, VA
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Machipongo, VA
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Machipongo, VA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
