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
A subtle decrease in the average high-temperature marks September, falling from August's agreeable 73°F (22.8°C) to a comfortable 63.7°F (17.6°C). In the month of September, Allagash experiences an average low-temperature of 45.1°F (7.3°C).Humidity
The average relative humidity in September in Allagash is 80%.Rainfall
In Allagash, during September, the rain falls for 13.4 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Allagash, during the entire year, the rain falls for 142 days and collects up to 30.35" (771mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September, sunrise is at 5:56 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 6:17 pm EDT.
Sunshine
In Allagash, the average sunshine in September is 7.4h.UV index
In Allagash, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 3 during September translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the usual temperature for Allagash in September?
What is the average humidity in September in Allagash?
How many days does it rain in September in Allagash?
When it does not snow in Allagash?
Does it snow in Allagash in September?
How many hours of daylight does Allagash have in September?
When is the sunrise / sunset in September in Allagash?
How many hours of sunshine does Allagash have in September?
What is the UV index intensity in September in Allagash?
Average temperature in September
Allagash, ME
- Average high temperature in September: 63.7°F
The warmest month (with the highest average high temperature) is July (74.3°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in September: 45.1°F
The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is January (2.8°F).
Average pressure in September
Allagash, ME
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are March, September and November (30.01"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Allagash, ME
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Allagash, ME
- Average humidity in September: 80%
The month with the highest relative humidity is March (94%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Allagash, ME
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is October (2.91").
The driest month (with the least rainfall) is February (2.09").
Average rainfall days in September
Allagash, ME
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (16.7 days).
The months with the least rainy days are January and February (4.8 days).
Average snowfall in September
Allagash, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (14.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Allagash, ME
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Allagash, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 2h and 12min).
Average sunshine days in September
Allagash, ME
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is March (8 days).
Average UV index in September
Allagash, ME
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Allagash, ME
- Average cloud cover in September: 44
The month with the most cloud cover is February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 42).
Average visibility in September
Allagash, ME
- Average visibility in September: 5mi
The months with the highest visibility are May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Allagash, Maine, USA
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