Kamloops has four distinct seasons. Tourism Kamloops states that Kamloops is British Columbia’s second-sunniest City with over 2,000 hours of sunshine annually.
Spring (March to May) is moderately cold with a mix of sunshine, wind and rain.
Summer (June to mid-September) can reach 30+ degrees (Celsius) with the odd rainstorm and relatively low humidity.
Fall (Mid-September to November) offers beautiful warm sunny days, but colder nights and a more chill wind.
Winter (December to February) in Kamloops can be snowy and cold, yet many days are sunny. Somedays the wind is strong. The weather in the valley part of Kamloops is quite mild with low temperatures -5 to -15 degrees (Celsius) and minimal snowfall. At the same time, the mountainous parts of Kamloops receive heavy snowfall and the temperature can drop to -30 degrees Celsius.
If you are a tourist newcomer to the Kamloops Champion Traveler website suggests the best time to visit Kamloops, BC, Canada are from May 21st to October 7th based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). The website also provides a brief overview of the monthly weather forecast, temperature, perceived temperature, rain and snow, humidity and wind and overall travel experience by the time of year. One can also learn about the average cost of the trip to Kamloops from Champion Traveler