ERA5 almanac comparison — 8 years of real data
Jackson Hole vs McCall: weather in August
McCall edges out Jackson Hole for sun in August: 65% clear historically versus 58% (8-year ERA5 average, a 7-point gap). Both are viable — McCall is the safer bet.
Jackson Hole
WY
- Clear days, August
- 58%
- Sample size
- n=248 days
- Avg high
- 79°F
- Early August (1st–15th)
- 58%
- Late August (16th–end)
- 58%
- Rain frequency
- 17% of days
McCall
ID
- Clear days, August
- 65%
- Sample size
- n=248 days
- Avg high
- 79°F
- Early August (1st–15th)
- 69%
- Late August (16th–end)
- 61%
- Rain frequency
- 14% of days
Frequently asked
Is Jackson Hole or McCall warmer in August?
Equally warm by day in August. Jackson Hole averages highs of 79°F (highs n=248 days); McCall averages highs of 79°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Jackson Hole or McCall in August?
Days with measurable rain: Jackson Hole 17%, McCall 14% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in August, Jackson Hole or McCall?
McCall edges out Jackson Hole for sun in August: 65% clear historically versus 58% (8-year ERA5 average, a 7-point gap). Both are viable — McCall is the safer bet.
Compare Jackson Hole vs McCall 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.