Climate & Weather in Caldwell

Caldwell shares the broader Treasure Valley's genuine cold semi-arid, high-desert climate (Koppen BSk) at the lowest elevation of any market in this Idaho batch's Treasure Valley cluster (approximately 2,375 feet).

Exploring the idea of moving?

We can connect you with a local real estate professional who knows the area -- no pressure, just a starting point.

Learn more

A shared Treasure Valley climate pattern, at the lowest elevation

Caldwell's climate runs consistent with the broader high-desert pattern documented for Boise, Meridian, and Nampa: hot, dry summers and cold, comparatively wetter winters, at the lowest elevation of any market in this batch's Treasure Valley cluster.

A daily-average temperature framing

This pass's sourced Caldwell-specific figures use a daily-average framing rather than high/low: approximately 47°F in winter and 81°F in summer/fall -- disclosed as cited rather than converted, since the underlying source did not provide separate high/low figures.

Four real, distinct seasons

Caldwell genuinely experiences four distinct seasons -- a real consideration for movers from a milder or more humid region.

Key takeaways

Want to know what your budget actually buys here?

Tell us a bit about what you're looking for and we'll connect you with someone local who can walk you through real numbers.

Get local guidance

Read the full Caldwell overview for the complete picture -- housing, taxes, climate, and who this place genuinely fits.

Planning a move?

Tell us what you're looking for and we'll connect you with a local expert who can help you make it happen.

Talk to a local expert
Last reviewed: 2026-08-25. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.