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 transition into September shows a subtle variation to a cool 52.5°F (11.4°C) from August's 57.7°F (14.3°C) in the average high-temperature. Orca nights in September witness a mild cool down to an average temperature of 45.3°F (7.4°C).Humidity
In September, the average relative humidity in Orca is 82%.Rainfall
In Orca, in September, during 20.9 rainfall days, 8.98" (228mm) of precipitation is typically accumulated. Throughout the year, in Orca, there are 191.3 rainfall days, and 72.4" (1839mm) of precipitation is accumulated.Snowfall
In Orca, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 50min.On the first day of September, sunrise is at 6:38 am and sunset at 8:46 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 7:16 pm AKDT.
Sunshine
The average sunshine in September in Orca is 5.1h.UV index
In Orca, Alaska, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, an average UV index of 3 transforms into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the temperature in September in Orca?
What is the average humidity in September in Orca?
How much does it rain in Orca in September?
When it does not snow in Orca?
Does it snow in Orca in September?
How many hours of daylight does Orca have in September?
What time are sunrise and sunset in September in Orca?
How long on average sun shines in September in Orca?
How high is the UV index in September in Orca?
Average temperature in September
Orca, AK
- Average high temperature in September: 52.5°F
The warmest month (with the highest average high temperature) is July (58.6°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in September: 45.3°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in September
Orca, AK
- Average pressure in September: 29.78"Hg
The month with the highest atmospheric pressure is July (30"Hg).
The month with the lowest atmospheric pressure is November (29.65"Hg).
Average wind speed in September
Orca, AK
- Average wind speed in September: 8mph
The windiest months (with the highest average wind speed) are January and November (12.1mph).
The calmest month (with the lowest average wind speed) is June (5.2mph).
Average humidity in September
Orca, AK
- Average humidity in September: 82%
The month with the highest relative humidity is August (84%).
The month with the lowest relative humidity is November (75%).
Average rainfall in September
Orca, AK
- Average rainfall in September: 8.98"
The wettest month (with the highest rainfall) is October (9.09").
The driest month (with the least rainfall) is June (2.72").
Average rainfall days in September
Orca, AK
- Average rainfall days in September: 20.9 days
The month with the highest number of rainy days is August (21 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in September
Orca, AK
- Average snowfall in September: 0"
The month with the highest snowfall is December (17.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Orca, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Orca, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 5h and 1min
The months with the most sunshine are May, June and July (Average sunshine: 7h and 36min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in September
Orca, AK
- Average sunshine days in September: 8 days
The month with the most sunshine days is July (12.1 days).
The month with the least sunshine days is September (8 days).
Average UV index in September
Orca, AK
- Average UV index in September: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in September
Orca, AK
- Average cloud cover in September: 63
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is May (Cloud cover 57).
Average visibility in September
Orca, AK
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October and November (6mi).
The months with the lowest visibility are January, August and December (5mi).
Orca, Alaska, USA
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