Temperature
Cool by day, brisk at night.
57°Ftypical Aug high
Alta is most comfortable during summer. Summers are cool and winters are cold. Precipitation is spread through the year. Humidity is usually low.

Cool by day, brisk at night.
Frequent light showers across the month.
Cloudier spells limit sunshine.
Humidity is rarely noticeable.
Mostly cloudy skies.
Want a side-by-side climate view? Compare Alta with Helsinki.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 11, 2026
Data & methodology