ERA5 almanac comparison — 8 years of real data
Aspen vs Big Sur: weather in November
Big Sur edges out Aspen for sun in November: 14% clear historically versus 0% (8-year ERA5 average, a 14-point gap). Both are viable — Big Sur is the safer bet.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific November. For this
week’s actual forecast, each destination links to its live page below.
Aspen
CO
- Clear days, November
- 0%
- Sample size
- n=240 days
- Avg high
- 42°F
- Early November (1st–15th)
- 0%
- Late November (16th–end)
- 0%
- Rain frequency
- 28% of days
Big Sur
CA
- Clear days, November
- 14%
- Sample size
- n=240 days
- Avg high
- 64°F
- Early November (1st–15th)
- 21%
- Late November (16th–end)
- 8%
- Rain frequency
- 20% of days
Compare Aspen vs Big Sur 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.