ERA5 almanac comparison — 8 years of real data
Atlanta vs Denver: weather in February
Essentially a tie in February: Atlanta is 2% clear historically, Denver is 0% clear (8-year ERA5 average) — within the noise. Avg high 60°F vs 43°F. Atlanta also sees measurably more rain than Denver this month (47% vs 19% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Atlanta
GA
- Clear days, February
- 2%
- Sample size
- n=226 days
- Avg high
- 60°F
- Early February (1st–15th)
- 2%
- Late February (16th–end)
- 2%
- Rain frequency
- 47% of days
Denver
CO
- Clear days, February
- 0%
- Sample size
- n=226 days
- Avg high
- 43°F
- Early February (1st–15th)
- 0%
- Late February (16th–end)
- 0%
- Rain frequency
- 19% of days
Compare Atlanta vs Denver in another month
All percentages are historical averages from the ERA5 reanalysis via Open-Meteo, 8 full years (2018–2025). “Clear” means avg high ≥ 72 °F, precipitation < 1 mm, and a non-precipitation weather code. This is history, not a forecast. The live 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.