ERA5 almanac comparison — 8 years of real data
Tucson vs Vail: weather in June
Tucson is the clear winner for sun in June: 89% of days historically clear versus just 30% in Vail — a 59-point gap across 8 years of ERA5 data. Vail also sees measurably more rain than Tucson this month (25% vs 4% of days). This isn't close.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific June. For this
week’s actual forecast, each destination links to its live page below.
Tucson
AZ
- Clear days, June
- 89%
- Sample size
- n=240 days
- Avg high
- 101°F
- Early June (1st–15th)
- 95%
- Late June (16th–end)
- 83%
- Rain frequency
- 4% of days
Vail
CO
- Clear days, June
- 30%
- Sample size
- n=240 days
- Avg high
- 70°F
- Early June (1st–15th)
- 26%
- Late June (16th–end)
- 33%
- Rain frequency
- 25% of days
Compare Tucson vs Vail 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.