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
The transition into September subtly indicates a reduction in the average high-temperature, down to a pleasant 69.3°F (20.7°C) from August's moderately hot 76.5°F (24.7°C). An average low-temperature of 49.1°F (9.5°C) is noted during the nights in September.Humidity
In Underhill, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall in Underhill, Vermont. Rain falls for 12 days and accumulates 1.77" (45mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Underhill, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:27 pm. On the last day of September, sunrise is at 6:49 am and sunset at 6:33 pm EDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, the UV index of 3 transforms into the following advice:
Heed the precautions - It is counselled to guard against solar damage. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Underhill have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Underhill have in September?
What is the UV index intensity in September?
Average temperature in September
Underhill, VT
- Average high temperature in September: 69.3°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in September
Underhill, VT
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Underhill, VT
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Underhill, VT
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in September
Underhill, VT
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in September
Underhill, VT
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in September
Underhill, VT
- Average snowfall in September: 0"
The month with the highest snowfall is February (11.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Underhill, VT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Underhill, VT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in September
Underhill, VT
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is February (6.8 days).
Average UV index in September
Underhill, VT
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Underhill, VT
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Underhill, VT
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).
Underhill, Vermont, USA
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