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
With September's onset, the weather shows a temperature decrease, transitioning from a refreshing 61.3°F (16.3°C) in August to a fresh 50.9°F (10.5°C). During the month of September, Nikolai experiences a steady low-temperature average of 37.4°F (3°C).Humidity
In Nikolai, the average relative humidity in September is 80%.Rainfall
In Nikolai, during September, the rain falls for 14.5 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Nikolai, Alaska, during the entire year, the rain falls for 111.7 days and collects up to 14.88" (378mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 1.5 snowfall days, it receives 0.63" (16mm) of snow. Throughout the year, there are 96.1 snowfall days, and 38.66" (982mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 55min.On the first day of the month, sunrise is at 7:06 am and sunset at 9:27 pm. On the last day of September, sunrise is at 8:25 am and sunset at 7:48 pm AKDT.
Sunshine
In Nikolai, the average sunshine in September is 5.6h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during September translates into the following guidance:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start to snow?
How many hours of daylight does Nikolai have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Nikolai have in September?
What is the UV index reading in September?
Average temperature in September
Nikolai, AK
- Average high temperature in September: 50.9°F
The warmest month (with the highest average high temperature) is July (67.1°F).
The month with the lowest average high temperature is January (2.5°F).
- Average low temperature in September: 37.4°F
The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (-8°F).
Average pressure in September
Nikolai, AK
- Average pressure in September: 29.75"Hg
The month with the highest atmospheric pressure is July (29.92"Hg).
The month with the lowest atmospheric pressure is October (29.72"Hg).
Average wind speed in September
Nikolai, AK
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is May (5.9mph).
The calmest months (with the lowest average wind speed) are February, November and December (5.3mph).
Average humidity in September
Nikolai, AK
- Average humidity in September: 80%
The month with the highest relative humidity is March (94%).
The month with the lowest relative humidity is June (62%).
Average rainfall in September
Nikolai, AK
- Average rainfall in September: 1.97"
The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Nikolai, AK
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is August (18.9 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Nikolai, AK
- Average snowfall in September: 0.63"
The month with the highest snowfall is November (10.16").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Nikolai, AK
- Average snowfall days in September: 1.5 days
The months with the highest number of snowfall days are March and November (15.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Nikolai, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 20h and 6min).
The month with the shortest days is December (Average daylight: 4h and 54min).
- Average sunshine in September: 5h and 4min
The month with the most sunshine is May (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in September
Nikolai, AK
- Average sunshine days in September: 11.4 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (9.6 days).
Average UV index in September
Nikolai, AK
- Average UV index in September: 2
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, March, October, November and December (UV index 1).
Average cloud cover in September
Nikolai, AK
- Average cloud cover in September: 56
The month with the most cloud cover is April (Cloud cover 68).
The months with the least cloud cover are May and June (Cloud cover 47).
Average visibility in September
Nikolai, AK
- Average visibility in September: 5mi
The months with the highest visibility are May, June and July (6mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Nikolai, Alaska, USA
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