Average Weather In March For Yellowknife, Northwest Territories, Canada

Location

This report describes the typical weather at the Yellowknife Airport (Yellowknife, Northwest Territories, Canada) weather station over the course of an average March. It is based on the historical records from 1977 to 2012. Earlier records are either unavailable or unreliable.

Yellowknife, Northwest Territories has a continental climate with short dry cool summers. The area within 25 mi of this station is covered by lakes and rivers (40%), shrublands (34%), and forests (25%).

Temperature

The month of March is characterized by very rapidly rising daily high temperatures, with daily highs increasing from 4°F to 22°F over the course of the month, exceeding 37°F or dropping below -12°F only one day in ten.

Daily High and Low Temperature in March

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
Daily low temperatures range from -14°F to 1°F, falling below -33°F or exceeding 20°F only one day in ten.

Fraction of Time Spent in Various Temperature Bands in March

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

Over the course of March, 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 3:03 hours, implying an average day-over-day increase of 5.9 minutes.

The shortest day of the month is March 1 with 10:23 hours of daylight; the longest day is March 31 with 13:26 hours of daylight.

Daily Hours of Daylight and Twilight in March

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 7:00am on March 31; the latest sunset is at 8:25pm on March 31; the latest sunrise is at 8:07am on March 11; the earliest sunset is at 6:02pm on March 1.

Daylight savings time (DST) starts at 3:00am on March 11, 2012, shifting sunrise and sunset to an hour later.

Daily Sunrise & Sunset with Twilight and Daylight Savings Time in March

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight savings time are indicated by the "DST" labels.

Clouds

The median cloud cover is 70% (partly cloudy) and does not vary substantially over the course of the month.

Median Cloud Cover in March

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On March 16, a representative day, the sky is clear or mostly clear 33% of the time, partly cloudy 15% of the time, and mostly cloudy or overcast 49% of the time.

Cloud Cover Types in March

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around March 1, occurring in 59% of days. Precipitation is least likely around March 31, occurring in 45% of days.

Probability of Precipitation at Some Point in the Day in March

The fraction of days in which various types of precipitation are observed. If more than one type of precipitation is reported in a given day, the more severe precipitation is counted. For example, if light rain is observed in the same day as a thunderstorm, that day counts towards the thunderstorm totals. The order of severity is from the top down in this graph, with the most severe at the bottom.

Throughout March, the most common forms of precipitation are light snow and moderate snow.

Light snow is the most severe precipitation observed during 84% of those days with precipitation. It is most likely around March 1, when it is observed during 51% of all days.

Moderate snow is the most severe precipitation observed during 13% of those days with precipitation. It is most likely around March 2, when it is observed during 7% of all days.

Types of Precipitation Throughout March

Relative frequency of various types of precipitation over the course of a typical March.

Snow

The likelihood of snow falling is highest around March 1, occurring in 59% of days.

Probability of Snow Fall Being Reported in a Given Day in March

Probability that snow will be reported at least once in a given day.

Accumulation at this location in March is just more likely than not. The chances of there being snow on the ground are highest around March 21, occurring 65% of the time.

Chance of at Least Some Snow on the Ground in March

The probability that there is snow on the ground.

The snow is typically at its deepest on March 13, with a median depth of 14.3"; the depth exceeds 19.4" only one year out of ten.

Snow Depth When there is Snow on the Ground in March

The median depth of snow during times when there is at least some snow on the ground, with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Humidity

The relative humidity typically ranges from 49% (comfortable) to 80% (humid) over the course of a typical March, rarely dropping below 37% (comfortable) and reaching as high as 99% (very humid).

The air is driest around March 28, at which time the relative humidity drops below 55% (mildly humid) three days out of four; it is most humid around March 31, rising above 70% (humid) three days out of four.

Relative Humidity in March

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a typical March, the dew point typically varies from -23°F (dry) to 9°F (dry) and is rarely below -43°F (dry) or above 25°F (dry).

Dew Point in March

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of March typical wind speeds vary from 1 mph to 14 mph (light air to moderate breeze), rarely exceeding 20 mph (fresh breeze).

The highest average wind speed of 8 mph (gentle breeze) occurs around March 31, at which time the average daily maximum wind speed is 14 mph (moderate breeze).

The lowest average wind speed of 7 mph (light breeze) occurs around March 1, at which time the average daily maximum wind speed is 12 mph (moderate breeze).

Wind Speed in March

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
The wind is most often out of the east (19% of the time), north east (14% of the time), north west (13% of the time), south east (12% of the time), and north (12% of the time). The wind is least often out of the south west (3% of the time).

Wind Directions in March

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions in March

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.