Practical
Heat, ramps, and the other town up the hill
Summer heat in this valley is dry and persistent. A midday walk with luggage is worse than the distance suggests. Mornings and evenings are when the confluence is pleasant. Carry water in the car the way you would in any arid interior, and do not plan a hillside errand at the hottest hour if you can do it at eight. The rivers look cooling and still deserve ordinary caution.
Highway 5 over the Coquihalla is a serious mountain road in winter, with weather that does not match downtown Kamloops. Leaving Aberdeen at dawn does not flatten that pass. If Sun Peaks is tomorrow, look at that road on its own. And if the flight is from YKA, the airport is close and small. Confirm the schedule, then give yourself a dull, early ride rather than a clever one.