Moving from Chicago to Atlanta
A climate comparison of two homes: Illinois to Georgia. The dates below come from the nearest official weather station to each place.
Climate Match
Freezing months go from 3 months to 0 months.
Chicago, IL to Atlanta, GA
The full comparison
| Measure | From | To | Change |
|---|---|---|---|
| Months below freezing | 3 months | 0 months | 3 fewer |
| Coldest month | 26F in January | 42F in January | 16F warmer |
| Frost-free season | 201 days | 228 days | 27 days longer |
| Last spring frost | April 11 | March 25 | 17 days earlier |
| Warmest month | 76F in July | 80F in July | 3F hotter |
Moving from Chicago to Atlanta reshapes the home year. Winters get 16F warmer. Summers get 3F hotter. Your growing season is 27 days longer. Plan on a new rhythm for the house and garden.
What changes about the house
- Heating: expect a longer or deeper heating season. Service the furnace or boiler before the first cold snap, and budget for higher heating bills.
- Cooling: hotter peaks make air conditioning or shading more important. Check attic insulation and window sealing so the house does not trap heat.
- Garden: a longer frost-free season opens more crop choices and succession sowings. Raised beds warm earlier in spring.
- Snow and ice: fewer freezing months reduce roof and driveway risk, but one surprise storm still happens. Keep basic winter tools for the odd freeze.
Season by season
Spring starts earlier
Your last spring frost moves from April 11 to March 25, 17 days earlier. Start planting and outdoor prep sooner.
Summers run hotter
The warmest month goes from 76F in July to 80F in July. Air conditioning, shading, and cooling-load planning matter more.
Winters turn milder
Winter coldest month goes from 26F in January to 42F in January; freezing months go from 3 months to 0 months. Budget for more heating, snow removal, and ice-dam prevention.
Tools for both places
Moving from Chicago to Atlanta, answered
What is the biggest climate change from Chicago to Atlanta?
Freezing months go from 3 months to 0 months. 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: Chicago Midway Ap 72534 near Chicago and Atlanta Dekalb Peachtree Ap near Atlanta. 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 Chicago Midway Ap 72534 (near Chicago, IL) and Atlanta Dekalb Peachtree Ap (near Atlanta, GA). Canadian data is from Environment and Climate Change Canada; United States data is from NOAA NCEI. These are planning averages, not forecasts. See the methodology page for the full calculation.