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 onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 76.8°F (24.9°C) in August to a pleasant 68.9°F (20.5°C). In Winn, an average nighttime temperature of 48.9°F (9.4°C) is expected during September.Humidity
In September, the average relative humidity is 78%.Rainfall
March, July and September are months with the least rain when the rain falls for 7.7 days and typically aggregates up to 0.75" (19mm) of rain.Snowfall
In Winn, Maine, snow does not fall in June through September.Daylight
In Winn, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 5:55 am and sunset at 7:10 pm. On the last day of September, sunrise is at 6:31 am and sunset at 6:15 pm EDT.
Sunshine
In September, the average sunshine is 8h.UV index
The average daily maximum UV index in September in Winn is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in Winn in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Winn have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Winn have in September?
What is the UV index intensity in September?
Average temperature in September
Winn, ME
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in September: 48.9°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in September
Winn, ME
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are September and November (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Winn, ME
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Winn, ME
- Average humidity in September: 78%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Winn, ME
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is April (1.38").
The driest months (with the least rainfall) are March, July and September (0.75").
Average rainfall days in September
Winn, ME
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in September
Winn, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Winn, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Winn, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in September
Winn, ME
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (14.8 days).
Average UV index in September
Winn, ME
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Winn, ME
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Winn, ME
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Winn, Maine, USA
Weather forecast for your location
2. Allow the app to use your location