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 brings an average high-temperature of a still refreshing 56.5°F (13.6°C), nearly matching the August temperature. Nighttime temperatures in Klawock hover around an average low of 46.9°F (8.3°C) in September.Humidity
In Klawock, the average relative humidity in September is 88%.Rainfall
In September, the rain falls for 19.4 days. Throughout September, 6.02" (153mm) of precipitation is accumulated. In Klawock, during the entire year, the rain falls for 231.7 days and collects up to 67.83" (1723mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 42min.On the first day of September, sunrise is at 5:59 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:29 pm AKDT.
Sunshine
The months with the most sunshine are May and September, with an average of 5.7h of sunshine.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 3 in September leads to these recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September in Klawock?
When is the sunrise / sunset in September?
What are the months with the most sunshine?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Klawock, AK
- Average high temperature in September: 56.5°F
The warmest months (with the highest average high temperature) are July and August (60.4°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in September: 46.9°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is February (30.2°F).
Average pressure in September
Klawock, AK
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is July (30.06"Hg).
The month with the lowest atmospheric pressure is November (29.77"Hg).
Average wind speed in September
Klawock, AK
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in September
Klawock, AK
- Average humidity in September: 88%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are March and May (84%).
Average rainfall in September
Klawock, AK
- Average rainfall in September: 6.02"
The wettest month (with the highest rainfall) is November (8.03").
The driest month (with the least rainfall) is May (2.83").
Average rainfall days in September
Klawock, AK
- Average rainfall days in September: 19.4 days
The month with the highest number of rainy days is November (22.5 days).
The month with the least rainy days is February (14.8 days).
Average snowfall in September
Klawock, AK
- Average snowfall in September: 0"
The month with the highest snowfall is March (10.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Klawock, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (10.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Klawock, AK
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 24min).
The month with the shortest days is December (Average daylight: 7h and 12min).
- Average sunshine in September: 5h and 4min
The months with the most sunshine are May and September (Average sunshine: 5h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Klawock, AK
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is July (11.1 days).
The month with the least sunshine days is November (5.3 days).
Average UV index in September
Klawock, AK
- Average UV index in September: 3
The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Klawock, AK
- Average cloud cover in September: 62
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is September (Cloud cover 62).
Average visibility in September
Klawock, AK
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (5mi).
The months with the lowest visibility are July and August (4mi).
Klawock, Alaska, USA
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