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
As Alna enters September, the average high-temperature subtly lowers from the a warm 75.4°F (24.1°C) of August to a pleasant 68.9°F (20.5°C). Alna witnesses a consistent average low-temperature of 52.2°F (11.2°C) throughout September.Humidity
In Alna, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 9.5 days and accumulates 1.38" (35mm) of precipitation.Snowfall
In Alna, snow does not fall in June through September.Daylight
In Alna, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:02 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:20 pm EDT.
Sunshine
In Alna, the average sunshine in September is 8.4h.UV index
In Alna, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What is the average September temperature in Alna?
What is the average humidity in September in Alna?
What is the driest month in Alna?
How much does it rain in Alna in September?
When it does not snow in Alna?
Does it snow in Alna in September?
What is the average length of the day in September in Alna?
When are sunrise and sunset in September in Alna?
How long on average sun shines in September in Alna?
What is the UV index intensity in September in Alna?
Average temperature in September
Alna, ME
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Alna, ME
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Alna, ME
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Alna, ME
- Average humidity in September: 80%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (76%).
Average rainfall in September
Alna, ME
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in September
Alna, ME
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is April (15.1 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in September
Alna, ME
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Alna, ME
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alna, ME
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Alna, ME
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in September
Alna, ME
- Average UV index in September: 4
The month with the highest UV index is 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
Alna, ME
- Average cloud cover in September: 35
The months with the most cloud cover are February, March and April (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Alna, ME
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, September, October, November and December (6mi).
The months with the lowest visibility are May, June, July and August (5mi).
Alna, Maine, USA
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