August Weather at Eureka, N. W. T. Canada

Daily high temperatures decrease by 12°F, from 46°F to 34°F, rarely falling below 27°F or exceeding 54°F.

Daily low temperatures decrease by 11°F, from 38°F to 27°F, rarely falling below 20°F or exceeding 43°F.

For reference, on July 15, the hottest day of the year, temperatures at Eureka, N. W. T. typically range from 39°F to 48°F, while on February 24, the coldest day of the year, they range from -31°F to -23°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on August. 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.

McMurdo Station, Antarctica (11,540 miles away) is the far-away foreign place with temperatures most similar to Eureka, N. W. T. (view comparison).

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The month of August at Eureka, N. W. T. experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 57% throughout the month.

The clearest day of the month is August 21, with clear, mostly clear, or partly cloudy conditions 44% of the time.

For reference, on February 25, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 91%, while on June 17, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 51%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Eureka, N. W. T., the chance of a wet day over the course of August is decreasing, starting the month at 19% and ending it at 14%.

For reference, the year's highest daily chance of a wet day is 19% on August 10, and its lowest chance is 1% on March 3.

Over the course of August at Eureka, N. W. T., the chance of a day with only rain decreases from 18% to 7%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow increases from 0% to 5%.

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 August at Eureka, N. W. T. is decreasing, starting the month at 1.1 inches, when it rarely exceeds 2.3 inches or falls below 0.2 inches, and ending the month at 0.6 inches, when it rarely exceeds 1.4 inches.

The highest average 31-day accumulation is 1.2 inches on August 4.

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 August at Eureka, N. W. T. is increasing, starting the month at 0.4 inches, when it rarely exceeds 1.1 inches, and ending the month at 2.6 inches, when it rarely exceeds 6.4 inches.

Due to its extreme latitude, Eureka, N. W. T. 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.

In the summer at Eureka, N. W. T. during 2024, the Sun is continuously above the horizon for 4.5 months, rising at 1:39 AM on April 12, and not setting again until 12:41 AM on August 29. As such, August begins the month in polar day, which ends before the month is out.

The shortest day of the month is August 31, with 20 hours, 43 minutes of daylight.

The earliest sunrise of the month at Eureka, N. W. T. is 12:49 AM on August 29 and the latest sunrise is 1 hour, 24 minutes later at 2:13 AM on August 31.

The latest sunset is 12:41 AM on August 28 and the earliest sunset is 1 hour, 45 minutes earlier at 10:56 PM on August 31.

Daylight saving time is observed at Eureka, N. W. T. during 2024, but it neither starts nor ends during August, 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 August 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 Eureka, N. W. T. is essentially constant during August, 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 Eureka, N. W. T. is decreasing during August, decreasing from 7.6 miles per hour to 6.4 miles per hour over the course of the month.

For reference, on July 7, the windiest day of the year, the daily average wind speed is 8.1 miles per hour, while on September 20, the calmest day of the year, the daily average wind speed is 6.0 miles per hour.

The hourly average wind direction at Eureka, N. W. T. throughout August is predominantly from the north, with a peak proportion of 43% on August 21.

Eureka, N. W. T. is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature at Eureka, N. W. T. is essentially constant during August, remaining around 31°F throughout.

The highest average surface water temperature during August is 32°F on August 4.

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 Eureka, N. W. T. typically lasts for 2.0 months (60 days), from around June 15 to around August 14, rarely starting before May 30 or after July 4, and rarely ending before July 25 or after August 31.

During August at Eureka, N. W. T., the chance that a given day is within the growing season is very rapidly decreasing falling from 80% to 10% 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 Eureka, N. W. T. are essentially constant during August, remaining within 1°F of 20°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 Eureka, N. W. T. is very rapidly decreasing during August, falling by 2.3 kWh, from 4.5 kWh to 2.2 kWh, over the course of the month.

For the purposes of this report, the geographical coordinates of Eureka, N. W. T. are 79.994 deg latitude, -85.835 deg longitude, and 259 ft elevation.

The topography within 2 miles of Eureka, N. W. T. contains only modest variations in elevation, with a maximum elevation change of 374 feet and an average elevation above sea level of 148 feet. Within 10 miles contains only modest variations in elevation (2,733 feet). Within 50 miles contains large variations in elevation (4,465 feet).

The area within 2 miles of Eureka, N. W. T. is covered by sparse vegetation (39%), bare soil (35%), and water (27%), within 10 miles by sparse vegetation (43%) and bare soil (40%), and within 50 miles by sparse vegetation (33%) and water (33%).