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SunnyDays

ERA5 almanac comparison — 8 years of real data

Aspen vs Montauk: weather in June

Aspen is the clear winner for sun in June: 34% of days historically clear versus just 2% in Montauk — a 32-point gap across 8 years of ERA5 data. 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.

Aspen

CO

Clear days, June
34%
Sample size
n=240 days
Avg high
74°F
Early June (1st–15th)
33%
Late June (16th–end)
35%
Rain frequency
26% of days

Montauk

NY

Clear days, June
2%
Sample size
n=240 days
Avg high
64°F
Early June (1st–15th)
0%
Late June (16th–end)
3%

Compare Aspen vs Montauk 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.