ERA5 almanac comparison — 8 years of real data
Stowe vs Toronto: weather in September
Toronto edges out Stowe for sun in September: 25% clear historically versus 18% (8-year ERA5 average, a 7-point gap). Both are viable — Toronto is the safer bet.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific September. For this
week’s actual forecast, each destination links to its live page below.
Stowe
VT
- Clear days, September
- 18%
- Sample size
- n=240 days
- Avg high
- 70°F
- Early September (1st–15th)
- 22%
- Late September (16th–end)
- 14%
Toronto
ON
- Clear days, September
- 25%
- Sample size
- n=240 days
- Avg high
- 72°F
- Early September (1st–15th)
- 27%
- Late September (16th–end)
- 23%
Compare Stowe vs Toronto 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.