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 beginning of September subtly marks a decrease in the average high-temperature, transitioning from a warm 79.5°F (26.4°C) in August to a pleasant 72°F (22.2°C). Webster reports an average nighttime low-temperature of 53.8°F (12.1°C) in September.Humidity
The average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.4 days and typically collects 1.81" (46mm) of precipitation.Snowfall
In Webster, snow does not fall in June through September.Daylight
In Webster, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:13 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:30 pm EDT.
Sunshine
In Webster, the average sunshine in September is 8h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Webster in September?
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 Webster have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Webster have in September?
How high is the UV index in September?
Average temperature in September
Webster, MA
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in September: 53.8°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 (19.6°F).
Average pressure in September
Webster, MA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Webster, MA
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Webster, MA
- Average humidity in September: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Webster, MA
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Webster, MA
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is July (16.3 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in September
Webster, MA
- Average snowfall in September: 0"
The months with the highest snowfall are February and March (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Webster, MA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Webster, MA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Webster, MA
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in September
Webster, MA
- 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, March, November and December (UV index 2).
Average cloud cover in September
Webster, MA
- Average cloud cover in September: 42
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Webster, MA
- Average visibility in September: 5mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
Webster, Massachusetts, USA
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