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 onset introduces a mild reduction in the average high-temperature, from a hot 87.6°F (30.9°C) in August to a moderately hot 81.1°F (27.3°C). During the nights in September, the temperature averages to a refreshing 63°F (17.2°C).Heat index
In September, the average heat index is calculated to be a hot 86°F (30°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
In Ammon, the average relative humidity in September is 75%.Rainfall
September is the month with the least rainfall. Rain falls for 13.3 days and accumulates 1.93" (49mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Ammon, the average length of the day in September is 12h and 25min.On the first day of September in Ammon, sunrise is at 6:42 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:55 pm EDT.
Sunshine
The average sunshine in September in Ammon, Virginia, is 8.9h.UV index
In September, the average daily maximum UV index in Ammon, Virginia, is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What is the usual temperature for Ammon in September?
What is the average humidity in September in Ammon?
What is the driest month in Ammon?
How much does it rain in Ammon in September?
When it does not snow in Ammon?
What is the average length of the day in September in Ammon?
What time are sunrise and sunset in September in Ammon?
How many hours of sunshine does Ammon have in September?
What is the UV index reading in September in Ammon?
Average temperature in September
Ammon, VA
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Ammon, VA
- Average pressure in September: 30.04"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
Ammon, VA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Ammon, VA
- Average humidity in September: 75%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Ammon, VA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Ammon, VA
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in September
Ammon, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Ammon, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ammon, VA
- 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 42min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Ammon, VA
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Ammon, VA
- Average UV index in September: 5
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 and December (UV index 2).
Average cloud cover in September
Ammon, VA
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Ammon, 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).
Ammon, Virginia, USA
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