How Does Kamloops Weather Affect How Frequently You Need to Wash Your Windows?

"Dry climate means dirtier windows" is true but incomplete — it skips over why, which matters if you're trying to figure out the right schedule for your specific property rather than following a generic rule.

The Three Mechanisms at Work

Why Rain Isn't the Full Answer, Even When It Happens

It's a common assumption that rain cleans windows the way it cleans a car — it doesn't, especially with hard water. Rainfall in a mineral-rich region can actually deposit spotting as it dries rather than rinsing debris away, meaning a rainy week in Kamloops isn't the free cleaning it might be in a softer-water climate. This is part of why we specifically recommend a pure-water cleaning system rather than a standard hose-and-squeegee approach — covered in The Best Way to Clean Outside Windows.

The Compounding Effect

These three mechanisms don't operate independently — dust settles into existing hard water spotting, creating a bonded film that's substantially harder to remove than either factor alone. This compounding effect is why windows that go a full season without cleaning often need more aggressive treatment than a simple wipe-down, and why staying closer to the recommended schedule prevents the harder, more time-consuming clean later.