Climate and Average Weather Year Round at Kamloops Airport Canada

At Kamloops Airport, the summers are warm, dry, and partly cloudy and the winters are freezing, snowy, and mostly cloudy. Over the course of the year, the temperature typically varies from 20°F to 84°F and is rarely below 2°F or above 94°F.

Based on the tourism score, the best time of year to visit Kamloops Airport for warm-weather activities is from early July to mid August.

The warm season lasts for 3.1 months, from June 5 to September 9, with an average daily high temperature above 73°F. The hottest month of the year at Kamloops Airport is July, with an average high of 82°F and low of 57°F.

The cold season lasts for 3.2 months, from November 15 to February 21, with an average daily high temperature below 40°F. The coldest month of the year at Kamloops Airport is January, with an average low of 21°F and high of 31°F.

At Kamloops Airport, 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 Kamloops Airport begins around May 31 and lasts for 4.2 months, ending around October 5.

The clearest month of the year at Kamloops Airport is August, during which on average the sky is clear, mostly clear, or partly cloudy 64% of the time.

The cloudier part of the year begins around October 5 and lasts for 7.8 months, ending around May 31.

The cloudiest month of the year at Kamloops Airport is January, during which on average the sky is overcast or mostly cloudy 74% 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 Kamloops Airport varies throughout the year.

The wetter season lasts 8.3 months, from May 11 to January 20, with a greater than 18% chance of a given day being a wet day. The month with the most wet days at Kamloops Airport is November, with an average of 7.0 days with at least 0.04 inches of precipitation.

The drier season lasts 3.7 months, from January 20 to May 11. The month with the fewest wet days at Kamloops Airport is April, with an average of 3.4 days with at least 0.04 inches of precipitation.

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 Kamloops Airport changes throughout the year.

Rain alone is the most common for 10 months, from January 31 to December 11. The month with the most days of rain alone at Kamloops Airport is June, with an average of 6.9 days.

Snow alone is the most common for 1.7 months, from December 11 to January 31. The month with the most days of snow alone at Kamloops Airport is January, with an average of 3.2 days.

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. Kamloops Airport experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.8 months, from April 17 to December 11, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain at Kamloops Airport is June, with an average rainfall of 1.3 inches.

The rainless period of the year lasts for 4.2 months, from December 11 to April 17. The month with the least rain at Kamloops Airport is January, with an average rainfall of 0.3 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Kamloops Airport experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.2 months, from October 31 to March 6, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Kamloops Airport is December, with an average snowfall of 5.1 inches.

The snowless period of the year lasts for 7.8 months, from March 6 to October 31. The least snow falls around July 17, with an average total accumulation of 0.0 inches.

The length of the day at Kamloops Airport varies extremely over the course of the year. In 2024, the shortest day is December 21, with 7 hours, 58 minutes of daylight; the longest day is June 20, with 16 hours, 30 minutes of daylight.

The earliest sunrise is at 4:48 AM on June 17, and the latest sunrise is 3 hours, 15 minutes later at 8:03 AM on December 30. The earliest sunset is at 3:56 PM on December 11, and the latest sunset is 5 hours, 22 minutes later at 9:18 PM on June 24.

Daylight saving time (DST) is observed at Kamloops Airport during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

The figure below presents a compact representation of key lunar data for 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.

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 Kamloops Airport, 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, remaining a virtually constant 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 Kamloops Airport does not vary significantly over the course of the year, remaining within 0.4 miles per hour of 3.7 miles per hour throughout.

The predominant average hourly wind direction at Kamloops Airport varies throughout the year.

The wind is most often from the west for 2.4 weeks, from July 21 to August 7, with a peak percentage of 39% on July 22. The wind is most often from the south for 11 months, from August 7 to July 21, with a peak percentage of 37% on January 1.

To characterize how pleasant the weather is at Kamloops Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Kamloops Airport for general outdoor tourist activities is from early July to mid August, with a peak score in the last week of July.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Kamloops Airport for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 Kamloops Airport typically lasts for 5.5 months (168 days), from around April 23 to around October 8, rarely starting before April 5 or after May 11, and rarely ending before September 20 or after October 25.

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.

Based on growing degree days alone, the first spring blooms at Kamloops Airport should appear around April 26, only rarely appearing before April 16 or after May 7.

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 3.4 months, from May 7 to August 19, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year at Kamloops Airport is July, with an average of 6.8 kWh.

The darker period of the year lasts for 3.8 months, from October 23 to February 16, with an average daily incident shortwave energy per square meter below 2.0 kWh. The darkest month of the year at Kamloops Airport is December, with an average of 0.9 kWh.

For the purposes of this report, the geographical coordinates of Kamloops Airport are 50.702 deg latitude, -120.444 deg longitude, and 1,135 ft elevation.

The topography within 2 miles of Kamloops Airport contains very significant variations in elevation, with a maximum elevation change of 1,335 feet and an average elevation above sea level of 1,348 feet. Within 10 miles contains very significant variations in elevation (4,272 feet). Within 50 miles also contains extreme variations in elevation (6,365 feet).

The area within 2 miles of Kamloops Airport is covered by bare soil (37%), sparse vegetation (32%), and water (12%), within 10 miles by sparse vegetation (42%) and trees (19%), and within 50 miles by trees (60%) and sparse vegetation (20%).