September weather forecastBiorka, AK
September
Weather in September
The first month of the autumn, September, is also a fresh month in Biorka, Alaska, with an average temperature varying between 47.1°F (8.4°C) and 50°F (10°C).Temperature
The commencement of September records an average high-temperature of a still fresh 50°F (10°C), barely varying from August's 53.2°F (11.8°C). Biorka in September observes a slight diminution in temperature from daily highs, recording a low-temperature average of 47.1°F (8.4°C).Humidity
In September, the average relative humidity in Biorka is 87%.Rainfall
In Biorka, during September, the rain falls for 19.8 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Biorka, during the entire year, the rain falls for 198.8 days and collects up to 33.78" (858mm) of precipitation.Snowfall
In Biorka, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 40min.On the first day of the month, sunrise is at 8:15 am and sunset at 9:53 pm. On the last day of September, sunrise is at 9:06 am and sunset at 8:42 pm AKDT.
Sunshine
The average sunshine in September is 4.7h.UV index
In Biorka, Alaska, the average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 2 during September leads to these advisories:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Biorka, AK
- Average high temperature in September: 50°F
The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is March (34.7°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is March (30.7°F).
Average pressure in September
Biorka, AK
- Average pressure in September: 29.79"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is January (29.5"Hg).
Average wind speed in September
Biorka, AK
- Average wind speed in September: 12.9mph
The windiest months (with the highest average wind speed) are November and December (16.5mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in September
Biorka, AK
- Average humidity in September: 87%
The month with the highest relative humidity is July (91%).
The months with the lowest relative humidity are November and December (80%).
Average rainfall in September
Biorka, AK
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in September
Biorka, AK
- Average rainfall days in September: 19.8 days
The month with the highest number of rainy days is October (21.8 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in September
Biorka, AK
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Biorka, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Biorka, AK
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 4h and 42min
The month with the most sunshine is June (Average sunshine: 5h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in September
Biorka, AK
- Average sunshine days in September: 6.9 days
The month with the most sunshine days is August (9.7 days).
The month with the least sunshine days is April (3.8 days).
Average UV index in September
Biorka, AK
- Average UV index in September: 2
The months with the highest UV index are July and August (UV index 3).
The months with the lowest UV index are February, March, April and November (UV index 1).
Average cloud cover in September
Biorka, AK
- Average cloud cover in September: 66
The month with the most cloud cover is July (Cloud cover 74).
The months with the least cloud cover are September and October (Cloud cover 66).
Average visibility in September
Biorka, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, July and December (5mi).
