ERA5 almanac comparison — 8 years of real data
Birmingham vs Jackson Hole: weather in October
Birmingham is the clear winner for sun in October: 44% of days historically clear versus just 1% in Jackson Hole — a 43-point gap across 8 years of ERA5 data. This isn't close.
Birmingham
AL
- Clear days, October
- 44%
- Sample size
- n=248 days
- Avg high
- 75°F
- Early October (1st–15th)
- 53%
- Late October (16th–end)
- 36%
- Rain frequency
- 24% of days
Jackson Hole
WY
- Clear days, October
- 1%
- Sample size
- n=248 days
- Avg high
- 54°F
- Early October (1st–15th)
- 3%
- Late October (16th–end)
- 0%
- Rain frequency
- 32% of days
Frequently asked
Is Birmingham or Jackson Hole warmer in October?
Birmingham runs warmer by day in October. Birmingham averages highs of 75°F (highs n=248 days); Jackson Hole averages highs of 54°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Birmingham or Jackson Hole in October?
Days with measurable rain: Birmingham 24%, Jackson Hole 32% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in October, Birmingham or Jackson Hole?
Birmingham is the clear winner for sun in October: 44% of days historically clear versus just 1% in Jackson Hole — a 43-point gap across 8 years of ERA5 data. This isn't close.
Compare Birmingham vs Jackson Hole 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.