ERA5 almanac comparison — 8 years of real data
Naples vs Zion / Springdale: weather in October
Essentially a tie in October: Naples is 23% clear historically, Zion / Springdale is 20% clear (8-year ERA5 average) — within the noise. Avg high 86°F vs 64°F. Naples also sees measurably more rain than Zion / Springdale this month (48% vs 13% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Naples
FL
- Clear days, October
- 23%
- Sample size
- n=248 days
- Avg high
- 86°F
- Early October (1st–15th)
- 12%
- Late October (16th–end)
- 34%
- Rain frequency
- 48% of days
Zion / Springdale
UT
- Clear days, October
- 20%
- Sample size
- n=248 days
- Avg high
- 64°F
- Early October (1st–15th)
- 32%
- Late October (16th–end)
- 9%
- Rain frequency
- 13% of days
Compare Naples vs Zion / Springdale 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.