Moving from Ottawa to New York City
A climate comparison of two homes: Ontario to New York. The dates below come from the nearest official weather station to each place.
Climate Match
Freezing months go from 4 months to 0 months.
Ottawa, ON to New York City, NY
The full comparison
| Measure | From | To | Change |
|---|---|---|---|
| Months below freezing | 4 months | 0 months | 4 fewer |
| Frost-free season | 158 days | 244 days | 86 days longer |
| Coldest month | -10C in January | 1C in January | 12C warmer |
| Last spring frost | April 30 | March 26 | 35 days earlier |
| Warmest month | 21C in July | 26C in July | 5C hotter |
Moving from Ottawa to New York City reshapes the home year. Winters get 12C warmer. Summers get 5C hotter. Your growing season is 86 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 30 to March 26, 35 days earlier. Start planting and outdoor prep sooner.
Summers run hotter
The warmest month goes from 21C in July to 26C in July. Air conditioning, shading, and cooling-load planning matter more.
Winters turn milder
Winter coldest month goes from -10C in January to 1C in January; freezing months go from 4 months to 0 months. Budget for more heating, snow removal, and ice-dam prevention.
Tools for both places
Moving from Ottawa to New York City, answered
What is the biggest climate change from Ottawa to New York City?
Freezing months go from 4 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: Ottawa Cda near Ottawa and Laguardia Ap 72503 near New York City. 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 Ottawa Cda (near Ottawa, ON) and Laguardia Ap 72503 (near New York City, NY). 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.