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Average Weather in July in Chetwynd Canada

In Chetwynd, the month of July is characterized by gradually rising daily high temperatures, with daily highs increasing by 3°F, from 69°F to 73°F over the course of the month, and rarely exceeding 83°F or dropping below 61°F. The highest daily average high temperature is 73°F on July 31.

Daily low temperatures are around 51°F, rarely falling below 44°F or exceeding 58°F. The highest daily average low temperature is 52°F on July 23.

For reference, on July 30, the hottest day of the year, temperatures in Chetwynd typically range from 51°F to 73°F, while on January 10, the coldest day of the year, they range from 8°F to 20°F.

Average High and Low Temperature in July

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in July

Average Hourly Temperature in July in Chetwynd12 AM4 AM8 AM12 PM4 PM8 PM12 AM181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131JunAugcoldcoolcomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.


The month of July in Chetwynd experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 53% to 45%.

The clearest day of the month is July 30, with clear, mostly clear, or partly cloudy conditions 55% of the time.

For reference, on February 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 72%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 56%.

Cloud Cover in July

The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.


A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Chetwynd, the chance of a wet day over the course of July is rapidly decreasing, starting the month at 30% and ending it at 23%.

For reference, the year's highest daily chance of a wet day is 31% on June 21, and its lowest chance is 13% on February 15.

Probability of Precipitation in July

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).


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 July in Chetwynd is decreasing, starting the month at 2.8 inches, when it rarely exceeds 5.1 inches or falls below 0.8 inches, and ending the month at 2.0 inches, when it rarely exceeds 3.8 inches or falls below 0.5 inches.

Average Monthly Rainfall in July

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.


Over the course of July in Chetwynd, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 23 minutes, implying an average daily decrease of 2 minutes, 46 seconds, and weekly decrease of 19 minutes, 21 seconds.

The shortest day of the month is July 31, with 16 hours, 3 minutes of daylight and the longest day is July 1, with 17 hours, 26 minutes of daylight.

Hours of Daylight and Twilight in July

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Chetwynd is 4:27 AM on July 1 and the latest sunrise is 43 minutes later at 5:10 AM on July 31.

The latest sunset is 9:53 PM on July 1 and the earliest sunset is 39 minutes earlier at 9:13 PM on July 31.

Daylight saving time is not observed in Chetwynd during 2017.

For reference, on June 21, the longest day of the year, the Sun rises at 4:22 AM and sets 17 hours, 33 minutes later, at 9:54 PM, while on December 21, the shortest day of the year, it rises at 9:34 AM and sets 7 hours, 1 minute later, at 4:35 PM.

Sunrise & Sunset with Twilight in July

The solar day over the course of July. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.


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 in Chetwynd is essentially constant during July, remaining around 0% throughout.

Humidity Comfort Levels in July

The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.


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 in Chetwynd is essentially constant during July, remaining around 2.3 miles per hour throughout.

For reference, on December 10, the windiest day of the year, the daily average wind speed is 3.2 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 2.2 miles per hour.

Average Wind Speed in July

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The hourly average wind direction in Chetwynd throughout July is predominantly from the west, with a peak proportion of 66% on July 21.

Wind Direction in July

The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Solar Energy

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 in Chetwynd is essentially constant during July, remaining within 0.2 kWh of 6.0 kWh throughout.

Average Daily Incident Shortwave Solar Energy in July

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.


For the purposes of this report, the geographical coordinates of Chetwynd are 55.700 deg latitude, -121.636 deg longitude, and 2,339 ft elevation.

The topography within 2 miles of Chetwynd contains very significant variations in elevation, with a maximum elevation change of 1,493 feet and an average elevation above sea level of 2,301 feet. Within 10 miles contains very significant variations in elevation (2,661 feet). Within 50 miles contains large variations in elevation (5,623 feet).

The area within 2 miles of Chetwynd is covered by trees (73%), sparse vegetation (13%), and cropland (10%), within 10 miles by trees (90%), and within 50 miles by trees (82%).

Data Sources

This report illustrates the typical weather in Chetwynd year round, 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

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Chetwynd.

For each station, the records are corrected for the elevation difference between that station and Chetwynd according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Chetwynd is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Chetwynd and a given station.

The stations contributing to this reconstruction are: Fort St. John Airport (48%, 82 kilometers, northeast); Mackenzie Airport (33%, 104 kilometers, southwest); and Beaverlodge (19%, 152 kilometers, east).

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.