ERA5 almanac comparison — 8 years of real data
Charleston vs Door County: weather in October
Charleston is the clear winner for sun in October: 45% of days historically clear versus just 3% in Door County — a 42-point gap across 8 years of ERA5 data. This isn't close.
Charleston
SC
- Clear days, October
- 45%
- Sample size
- n=248 days
- Avg high
- 76°F
- Early October (1st–15th)
- 47%
- Late October (16th–end)
- 43%
- Rain frequency
- 24% of days
Door County
WI
- Clear days, October
- 3%
- Sample size
- n=248 days
- Avg high
- 57°F
- Early October (1st–15th)
- 4%
- Late October (16th–end)
- 2%
- Rain frequency
- 38% of days
Frequently asked
Is Charleston or Door County warmer in October?
Charleston runs warmer by day in October. Charleston averages highs of 76°F (highs n=248 days); Door County averages highs of 57°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Charleston or Door County in October?
Days with measurable rain: Charleston 24%, Door County 38% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in October, Charleston or Door County?
Charleston is the clear winner for sun in October: 45% of days historically clear versus just 3% in Door County — a 42-point gap across 8 years of ERA5 data. This isn't close.
Compare Charleston vs Door County 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 forecast for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.