Moving from Washington to Denver
A climate comparison of two homes: District of Columbia to Colorado. The dates below come from the nearest official weather station to each place.
Climate Match
Your growing season runs 87 days shorter, 241 days becomes 154 days.
Washington, DC to Denver, CO
The full comparison
| Measure | From | To | Change |
|---|---|---|---|
| Frost-free season | 241 days | 154 days | 87 days shorter |
| Last spring frost | March 24 | May 5 | 42 days later |
| Months below freezing | 0 months | 2 months | 2 more |
| Warmest month | 27C in July | 23C in July | 4C cooler |
| Coldest month | 3C in January | 0C in December | 3C colder |
Moving from Washington to Denver reshapes the home year. Winters get 3C colder. Summers get 4C cooler. Your growing season is 87 days shorter. 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.
- Garden: a shorter season favors transplants, short-season varieties, and cold frames. Wait for soil to warm before direct sowing.
- Snow and ice: more months below freezing mean roof load, ice dams, and driveway care become regular work. Keep a roof rake and ice melt on hand.
Season by season
Spring starts later
Your last spring frost moves from March 24 to May 5, 42 days later. Delay tender planting and spring openings.
Summers run cooler
The warmest month goes from 27C in July to 23C in July. Cooler peaks mean less cooling stress, but watch humidity and ventilation.
Winters turn milder
Winter coldest month goes from 3C in January to 0C in December; freezing months go from 0 months to 2 months. Budget for more heating, snow removal, and ice-dam prevention.
Tools for both places
Moving from Washington to Denver, answered
What is the biggest climate change from Washington to Denver?
Your growing season runs 87 days shorter, 241 days becomes 154 days. 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: Washington Reagan Natl Ap Gsn 72405 near Washington and Denver Centennial Ap near Denver. 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 Washington Reagan Natl Ap Gsn 72405 (near Washington, DC) and Denver Centennial Ap (near Denver, CO). 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.