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
With the arrival of September, Westford notices a mild change in the average high-temperature, sliding from August's moderately hot 76.3°F (24.6°C) to a pleasant 69.1°F (20.6°C). Westford sees an average low-temperature of 49.6°F (9.8°C) during September.Humidity
In September, the average relative humidity is 79%.Rainfall
In Westford, in September, it is raining for 12.7 days, with typically 1.85" (47mm) of accumulated precipitation. In Westford, Vermont, during the entire year, the rain falls for 172.5 days and collects up to 28.07" (713mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Westford, Vermont, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:15 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:33 pm EDT.
Sunshine
In September, the average sunshine in Westford is 9h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Westford in September?
What is the average humidity in September in Westford?
How much does it rain in Westford in September?
When it does not snow in Westford?
Does it snow in Westford in September?
What is the average length of the day in September in Westford?
What time are sunrise and sunset in September in Westford?
How long on average sun shines in September in Westford?
What is the UV index reading in September in Westford?
Average temperature in September
Westford, VT
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in September
Westford, VT
- Average pressure in September: 30.04"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
Westford, VT
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Westford, 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
Westford, VT
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in September
Westford, VT
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Westford, VT
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Westford, 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
Westford, 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: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in September
Westford, VT
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (6 days).
Average UV index in September
Westford, VT
- Average UV index in September: 3
The months with the highest UV index are 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
Westford, VT
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Westford, VT
- Average visibility in September: 5mi
The months with the highest visibility are May, July and August (6mi).
The months with the lowest visibility are January, February and March (4mi).
Westford, Vermont, USA
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