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
In Mendeltna, the average high-temperature in September drops from a fresh 52.7°F (11.5°C) in August to a chilly 43.2°F (6.2°C). Mendeltna experiences an average temperature drop to a wintry 32.7°F (0.4°C) during September nights.Humidity
In September, the average relative humidity in Mendeltna is 77%.Rainfall
In Mendeltna, during September, the rain falls for 17 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 165.3 rainfall days, and 17.99" (457mm) of precipitation is accumulated.Snowfall
January through June, August through December are months with snowfall in Mendeltna. In September, it is snowing for 6.7 days. Throughout September, 4.29" (109mm) of snow is accumulated. In Mendeltna, during the entire year, snow falls for 161.6 days and aggregates up to 83.27" (2115mm) of snow.Daylight
In September, the average length of the day is 12h and 53min.On the first day of September in Mendeltna, sunrise is at 6:37 am and sunset at 8:53 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 7:18 pm AKDT.
Sunshine
In September, the average sunshine in Mendeltna is 8.6h.UV index
January, April, September through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 1 during September translates into the following guidance:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
Is it cold in Mendeltna during September?
What is the average humidity in September in Mendeltna?
How many days does it rain in September in Mendeltna?
How many days does it snow in September in Mendeltna?
How many hours of daylight does Mendeltna have in September?
What time are sunrise and sunset in September in Mendeltna?
How long on average sun shines in September in Mendeltna?
What is the month with the lowest UV index in Mendeltna?
How high is the UV index in September in Mendeltna?
Average temperature in September
Mendeltna, AK
- Average high temperature in September: 43.2°F
The warmest month (with the highest average high temperature) is July (57.7°F).
The month with the lowest average high temperature is January (6.3°F).
- Average low temperature in September: 32.7°F
The month with the highest average low temperature is July (43.7°F).
The coldest month (with the lowest average low temperature) is January (-5.6°F).
Average pressure in September
Mendeltna, AK
- Average pressure in September: 29.77"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.74"Hg).
Average wind speed in September
Mendeltna, AK
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is June (5mph).
The calmest month (with the lowest average wind speed) is March (3.9mph).
Average humidity in September
Mendeltna, AK
- Average humidity in September: 77%
The months with the highest relative humidity are March and December (90%).
The month with the lowest relative humidity is June (64%).
Average rainfall in September
Mendeltna, AK
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is April (0.83").
Average rainfall days in September
Mendeltna, AK
- Average rainfall days in September: 17 days
The month with the highest number of rainy days is August (20.8 days).
The month with the least rainy days is February (9.1 days).
Average snowfall in September
Mendeltna, AK
- Average snowfall in September: 4.29"
The month with the highest snowfall is December (14.49").
The month with the least snowfall is July (0").
Average snowfall days in September
Mendeltna, AK
- Average snowfall days in September: 6.7 days
The month with the highest number of snowfall days is December (22.3 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Mendeltna, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in September
Mendeltna, AK
- Average sunshine days in September: 7.8 days
The month with the most sunshine days is May (10.7 days).
The month with the least sunshine days is June (6.8 days).
Average UV index in September
Mendeltna, AK
- Average UV index in September: 1
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, April, September, October, November and December (UV index 1).
Average cloud cover in September
Mendeltna, AK
- Average cloud cover in September: 41
The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in September
Mendeltna, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Mendeltna, Alaska, USA
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