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
As Mount Jackson enters September, the average high-temperature subtly lowers from the 82.2°F (27.9°C) of August to a still warm 75.4°F (24.1°C). Mount Jackson's average low-temperature is measured at a fresh 54.5°F (12.5°C) during September.Humidity
September and October, with an average relative humidity of 79%, are the most humid months in Mount Jackson.Rainfall
In Mount Jackson, Virginia, in September, it is raining for 13.5 days, with typically 1.85" (47mm) of accumulated precipitation. In Mount Jackson, during the entire year, the rain falls for 154 days and collects up to 23.43" (595mm) of precipitation.Snowfall
May through September are months without snowfall in Mount Jackson.Daylight
In Mount Jackson, the average length of the day in September is 12h and 26min.On the first day of September in Mount Jackson, sunrise is at 6:44 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:58 pm EDT.
Sunshine
In September, the average sunshine in Mount Jackson is 8.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 4 during September translates into these guidelines:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What is the temperature in September in Mount Jackson?
What are the most humid months in Mount Jackson?
What is the average humidity in September in Mount Jackson?
How much does it rain in Mount Jackson in September?
When it does not snow in Mount Jackson?
Does it snow in Mount Jackson in September?
How many hours of daylight does Mount Jackson have in September?
What time are sunrise and sunset in September in Mount Jackson?
How many hours of sunshine does Mount Jackson have in September?
How high is the UV index in September in Mount Jackson?
Average temperature in September
Mount Jackson, VA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in September
Mount Jackson, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Mount Jackson, VA
- Average wind speed in September: 4.4mph
The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Mount Jackson, VA
- Average humidity in September: 79%
The months with the highest relative humidity are September and October (79%).
The months with the lowest relative humidity are January, April, June, July and November (75%).
Average rainfall in September
Mount Jackson, VA
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is May (2.95").
The driest months (with the least rainfall) are January and November (1.3").
Average rainfall days in September
Mount Jackson, VA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Mount Jackson, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.39").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Mount Jackson, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mount Jackson, VA
- 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Mount Jackson, VA
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Mount Jackson, VA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Mount Jackson, VA
- Average cloud cover in September: 39
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Mount Jackson, VA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, April, June, July and November (6mi).
The months with the lowest visibility are March, May, August, September, October and December (5mi).
Mount Jackson, Virginia, USA
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