Average Weather at Chamouchouane Automatic Weather Reporting System Canada

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At Chamouchouane Automatic Weather Reporting System, the summers are long, comfortable, and partly cloudy and the winters are frigid, snowy, and overcast. Over the course of the year, the temperature typically varies from -15°F to 72°F and is rarely below -36°F or above 83°F.

The warm season lasts for 3.9 months, from May 18 to September 16, with an average daily high temperature above 59°F. The hottest day of the year is July 26, with an average high of 72°F and low of 50°F.

The cold season lasts for 3.0 months, from December 3 to March 4, with an average daily high temperature below 22°F. The coldest day of the year is January 29, with an average low of -15°F and high of 10°F.

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

At Chamouchouane Automatic Weather Reporting System, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year at Chamouchouane Automatic Weather Reporting System begins around April 16 and lasts for 6.2 months, ending around October 22. On August 11, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 55% of the time, and overcast or mostly cloudy 45% of the time.

The cloudier part of the year begins around October 22 and lasts for 5.8 months, ending around April 16. On January 5, the cloudiest day of the year, the sky is overcast or mostly cloudy 83% of the time, and clear, mostly clear, or partly cloudy 17% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Chamouchouane Automatic Weather Reporting System varies throughout the year.

The wetter season lasts 5.8 months, from May 12 to November 5, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 43% on July 12.

The drier season lasts 6.2 months, from November 5 to May 12. The smallest chance of a wet day is 16% on February 1.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation at Chamouchouane Automatic Weather Reporting System changes throughout the year.

Rain alone is the most common for 6.8 months, from April 15 to November 9. The highest chance of a day with rain alone is 43% on July 12.

Snow alone is the most common for 4.6 months, from November 9 to March 30. The highest chance of a day with snow alone is 22% on December 17.

Mixed snow and rain is the most common for 2.3 weeks, from March 30 to April 15. The highest chance of a day with mixed snow and rain is 11% on April 10.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Chamouchouane Automatic Weather Reporting System experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.1 months, from March 25 to November 28, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 8, with an average total accumulation of 3.5 inches.

The rainless period of the year lasts for 3.9 months, from November 28 to March 25. The least rain falls around January 21, with an average total accumulation of 0.1 inches.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Chamouchouane Automatic Weather Reporting System experiences significant seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 7.5 months, from October 1 to May 18, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around December 2, with an average total liquid-equivalent accumulation of 1.4 inches.

The snowless period of the year lasts for 4.5 months, from May 18 to October 1. The least snow falls around July 28, with an average total liquid-equivalent accumulation of 0.0 inches.

The length of the day at Chamouchouane Automatic Weather Reporting System varies extremely over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 11 minutes of daylight; the longest day is June 21, with 16 hours, 15 minutes of daylight.

The earliest sunrise is at 4:47 AM on June 16, and the latest sunrise is 3 hours, 2 minutes later at 7:48 AM on December 31. The earliest sunset is at 3:54 PM on December 11, and the latest sunset is 5 hours, 9 minutes later at 9:03 PM on June 25.

Daylight saving time (DST) is observed at Chamouchouane Automatic Weather Reporting System during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

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 perceived humidity level at Chamouchouane Automatic Weather Reporting System, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 4% of 4% 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 predominant average hourly wind direction at Chamouchouane Automatic Weather Reporting System varies throughout the year.

The wind is most often from the north for 1.1 months, from April 4 to May 8, with a peak percentage of 34% on April 13. The wind is most often from the west for 11 months, from May 8 to April 4, with a peak percentage of 47% on January 1.

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 experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.7 months, from April 28 to August 19, with an average daily incident shortwave energy per square meter above 5.0 kWh. The brightest day of the year is June 19, with an average of 6.1 kWh.

The darker period of the year lasts for 3.7 months, from October 22 to February 14, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest day of the year is December 14, with an average of 0.8 kWh.

For the purposes of this report, the geographical coordinates of Chamouchouane Automatic Weather Reporting System are 49.283 deg latitude, -73.350 deg longitude, and 1,332 ft elevation.

The topography within 2 miles of Chamouchouane Automatic Weather Reporting System contains significant variations in elevation, with a maximum elevation change of 620 feet and an average elevation above sea level of 1,286 feet. Within 10 miles contains significant variations in elevation (892 feet). Within 50 miles contains very significant variations in elevation (2,031 feet).

The area within 2 miles of Chamouchouane Automatic Weather Reporting System is covered by trees (97%), within 10 miles by trees (93%), and within 50 miles by trees (85%).

This report illustrates the typical weather at Chamouchouane Automatic Weather Reporting System, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

Chamouchouane Automatic Weather Reporting System has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Normandin; Chibougamau/Chapais Airport; Roberval Airport; Chapais; Mistook Automated Reporting Station; Chute Des Passes; Onatchiway, Que.; and Jonquiere Automated Reporting Station.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.