Moving from Seattle to Los Angeles
A climate comparison of two homes: Washington to California. The dates below come from the nearest official weather station to each place.
Climate Match
Your last spring frost moves from March 13 to December 31, 293 days later.
Seattle, WA to Los Angeles, CA
The full comparison
| Measure | From | To | Change |
|---|---|---|---|
| Last spring frost | March 13 | December 31 | 293 days later |
| Frost-free season | 247 days | 365 days | 118 days longer |
| Coldest month | 6C in December | 13C in December | 8C warmer |
| Warmest month | 20C in August | 26C in August | 6C hotter |
Moving from Seattle to Los Angeles reshapes the home year. The coldest month is 8C warmer. Summers get 6C hotter. Your growing season is 118 days longer. Plan on a new rhythm for the house and garden.
What changes about the house
- Coldest month: it is warmer at the destination, though unusual cold can still occur.
- Cooling: hotter peaks make air conditioning or shading more important. Check attic insulation and window sealing so the house does not trap heat.
- Garden: frost-free season length and last-frost timing point in different directions. Compare both measures before choosing crops or planting dates.
Season by season
Spring starts later
Your last spring frost moves from March 13 to December 31, 293 days later. Delay tender planting and spring openings.
Summers run hotter
The warmest month goes from 20C in August to 26C in August. Air conditioning, shading, and cooling-load planning matter more.
Winter measure suggests milder
Winter coldest month goes from 6C in December to 13C in December. This measure points to a milder season, though unusual cold and ice can still occur.
Tools for both places
Moving from Seattle to Los Angeles, answered
What is the biggest climate change from Seattle to Los Angeles?
Your last spring frost moves from March 13 to December 31, 293 days later. That is the largest shift in the 30-year climate record.
How are these numbers computed?
From official 30-year climate normals at the nearest station to each place: Seattle Boeing Fld near Seattle and Van Nuys Ap near Los Angeles. They are planning averages, not forecasts; local microclimates can run a week or two off the station record.
Does the comparison work in reverse?
Yes. Open the comparison tool and swap the two places; the deltas reverse direction but the match score stays the same.
Method and sources
Temperatures and frost dates are from the 30-year climate normals at Seattle Boeing Fld (near Seattle, WA) and Van Nuys Ap (near Los Angeles, CA). Canadian data is from Environment and Climate Change Canada; United States data is from NOAA NCEI. These are planning averages, not forecasts. See themethodology page for the full calculation.