September Weather at Arctic Village Airport United States

Daily high temperatures decrease by 19°F, from 51°F to 32°F, rarely falling below 23°F or exceeding 60°F.

Daily low temperatures decrease by 16°F, from 35°F to 19°F, rarely falling below 8°F or exceeding 43°F.

For reference, on July 4, the hottest day of the year, temperatures at Arctic Village Airport typically range from 50°F to 66°F, while on January 21, the coldest day of the year, they range from -21°F to -8°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Kogalym, Russia (3,215 miles away) and Tosontsengel, Mongolia (3,727 miles) are the far-away foreign places with temperatures most similar to Arctic Village Airport (view comparison).

© OpenStreetMap contributors

Compare Arctic Village Airport to another city:

CompareMap

The month of September at Arctic Village Airport experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 61% to 65%.

The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 39% of the time.

For reference, on September 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on March 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 49%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Arctic Village Airport, the chance of a wet day over the course of September is decreasing, starting the month at 24% and ending it at 18%.

For reference, the year's highest daily chance of a wet day is 34% on July 9, and its lowest chance is 4% on March 6.

Over the course of September at Arctic Village Airport, the chance of a day with only rain decreases from 21% to 8%, the chance of a day with mixed snow and rain remains an essentially constant 2% throughout, and the chance of a day with only snow increases from 1% to 9%.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during September at Arctic Village Airport is decreasing, starting the month at 1.5 inches, when it rarely exceeds 2.5 inches or falls below 0.4 inches, and ending the month at 0.5 inches, when it rarely exceeds 1.1 inches or falls below 0.1 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during September at Arctic Village Airport is increasing, starting the month at 1.3 inches, when it rarely exceeds 4.2 inches, and ending the month at 4.0 inches, when it rarely exceeds 9.4 inches or falls below 0.2 inches.

Due to its extreme latitude, Arctic Village Airport experiences polar day (also known as the midnight Sun) during the summer and polar night during the winter. These are periods of time in which the sun is continuously above or below the horizon for more than one day. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography.

Neither polar day nor polar night occur during the month of September.

Over the course of September at Arctic Village Airport, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 3 hours, 47 minutes, implying an average daily decrease of 7 minutes, 49 seconds, and weekly decrease of 54 minutes, 46 seconds.

The shortest day of the month is September 30, with 11 hours, 13 minutes of daylight and the longest day is September 1, with 15 hours, 0 minutes of daylight.

The earliest sunrise of the month at Arctic Village Airport is 6:10 AM on September 1 and the latest sunrise is 1 hour, 44 minutes later at 7:54 AM on September 30.

The latest sunset is 9:10 PM on September 1 and the earliest sunset is 2 hours, 3 minutes earlier at 7:07 PM on September 30.

Daylight saving time is observed at Arctic Village Airport during 2024, but it neither starts nor ends during September, so the entire month is in standard time.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for September 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy at Arctic Village Airport is essentially constant during September, remaining around 0% throughout.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Arctic Village Airport is essentially constant during September, remaining within 0.2 miles per hour of 6.4 miles per hour throughout.

For reference, on January 13, the windiest day of the year, the daily average wind speed is 8.2 miles per hour, while on August 30, the calmest day of the year, the daily average wind speed is 6.2 miles per hour.

The hourly average wind direction at Arctic Village Airport throughout September is predominantly from the east, with a peak proportion of 45% on September 30.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season at Arctic Village Airport typically lasts for 2.9 months (87 days), from around May 28 to around August 23, rarely starting before May 11 or after June 14, and rarely ending before August 6 or after September 10.

The month of September at Arctic Village Airport is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season rapidly decreasing from 27% to 0% over the course of the month.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days at Arctic Village Airport are essentially constant during September, remaining within 5°F of 563°F throughout.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy at Arctic Village Airport is rapidly decreasing during September, falling by 1.5 kWh, from 2.9 kWh to 1.4 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Arctic Village Airport are 68.116 deg latitude, -145.573 deg longitude, and 2,051 ft elevation.

The topography within 2 miles of Arctic Village Airport contains only modest variations in elevation, with a maximum elevation change of 226 feet and an average elevation above sea level of 2,063 feet. Within 10 miles contains only modest variations in elevation (3,212 feet). Within 50 miles contains large variations in elevation (6,391 feet).

The area within 2 miles of Arctic Village Airport is covered by grassland (65%) and shrubs (21%), within 10 miles by grassland (63%) and shrubs (27%), and within 50 miles by grassland (38%) and shrubs (24%).