January Weather at Fort Simpson Airport Canada

Daily high temperatures increase by 3°F, from -2°F to 0°F, rarely falling below -22°F or exceeding 20°F. The lowest daily average high temperature is -4°F on January 14.

Daily low temperatures are around -16°F, rarely falling below -38°F or exceeding 3°F. The lowest daily average low temperature is -17°F on January 15.

For reference, on July 21, the hottest day of the year, temperatures at Fort Simpson Airport typically range from 54°F to 76°F, while on January 15, the coldest day of the year, they range from -17°F to -3°F.

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

Bayanday, Russia (4,107 miles away) is the far-away foreign place with temperatures most similar to Fort Simpson Airport (view comparison).

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The month of January at Fort Simpson Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 68% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 67% on January 28.

The clearest day of the month is January 28, with clear, mostly clear, or partly cloudy conditions 33% of the time.

For reference, on March 24, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 73%, while on June 24, 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 Fort Simpson Airport, the chance of a wet day over the course of January is essentially constant, remaining around 9% throughout.

For reference, the year's highest daily chance of a wet day is 28% on July 14, and its lowest chance is 8% on March 1.

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 January at Fort Simpson Airport is essentially constant, remaining about 3.8 inches throughout, and rarely exceeding 8.2 inches or falling below 0.5 inches.

The highest average 31-day accumulation is 3.9 inches on January 21.

Over the course of January at Fort Simpson Airport, the length of the day is very rapidly increasing. From the start to the end of the month, the length of the day increases by 2 hours, 7 minutes, implying an average daily increase of 4 minutes, 13 seconds, and weekly increase of 29 minutes, 34 seconds.

The shortest day of the month is January 1, with 5 hours, 27 minutes of daylight and the longest day is January 31, with 7 hours, 33 minutes of daylight.

The latest sunrise of the month at Fort Simpson Airport is 10:25 AM on January 1 and the earliest sunrise is 53 minutes earlier at 9:32 AM on January 31.

The earliest sunset is 3:51 PM on January 1 and the latest sunset is 1 hour, 14 minutes later at 5:05 PM on January 31.

Daylight saving time is observed at Fort Simpson Airport during 2024, but it neither starts nor ends during January, so the entire month is in daylight saving time.

For reference, on June 20, the longest day of the year, the Sun rises at 4:17 AM and sets 19 hours, 38 minutes later, at 11:55 PM, while on December 21, the shortest day of the year, it rises at 10:26 AM and sets 5 hours, 15 minutes later, at 3:40 PM.

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 January 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 Fort Simpson Airport is essentially constant during January, remaining around 0% throughout.

For reference, on July 28, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

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 Fort Simpson Airport is essentially constant during January, remaining around 5.2 miles per hour throughout.

For reference, on January 23, the windiest day of the year, the daily average wind speed is 5.2 miles per hour, while on July 19, the calmest day of the year, the daily average wind speed is 3.6 miles per hour.

The highest daily average wind speed during January is 5.2 miles per hour on January 24.

The hourly average wind direction at Fort Simpson Airport throughout January is predominantly from the north, with a peak proportion of 36% on January 15.

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 Fort Simpson Airport typically lasts for 3.5 months (107 days), from around May 21 to around September 5, rarely starting before May 5 or after June 6, and rarely ending before August 15 or after September 27.

The month of January at Fort Simpson Airport is reliably fully outside of the growing season.

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 Fort Simpson Airport are essentially constant during January, remaining around 0°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 Fort Simpson Airport is essentially constant during January, remaining within 0.2 kWh of 0.4 kWh throughout.

For the purposes of this report, the geographical coordinates of Fort Simpson Airport are 61.760 deg latitude, -121.237 deg longitude, and 561 ft elevation.

The topography within 2 miles of Fort Simpson Airport contains only modest variations in elevation, with a maximum elevation change of 226 feet and an average elevation above sea level of 516 feet. Within 10 miles also contains only modest variations in elevation (315 feet). Within 50 miles contains only modest variations in elevation (2,372 feet).

The area within 2 miles of Fort Simpson Airport is covered by trees (51%), herbaceous vegetation (22%), sparse vegetation (12%), and water (11%), within 10 miles by trees (72%) and herbaceous vegetation (12%), and within 50 miles by trees (67%) and shrubs (15%).