ERA5 almanac comparison — 8 years of real data
Austin vs Big Sky: weather in June
Austin is the clear winner for sun in June: 32% of days historically clear versus just 2% in Big Sky — a 30-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.
Austin
TX
- Clear days, June
- 32%
- Sample size
- n=240 days
- Avg high
- 93°F
- Early June (1st–15th)
- 36%
- Late June (16th–end)
- 27%
- Rain frequency
- 36% of days
Big Sky
MT
- Clear days, June
- 2%
- Sample size
- n=240 days
- Avg high
- 60°F
- Early June (1st–15th)
- 2%
- Late June (16th–end)
- 3%
Compare Austin vs Big Sky 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.