ERA5 almanac comparison — 8 years of real data
Nashville vs San Antonio: weather in July
San Antonio edges out Nashville for sun in July: 44% clear historically versus 19% (8-year ERA5 average, a 25-point gap). Nashville also sees measurably more rain than San Antonio this month (58% vs 29% of days). Both are viable — San Antonio is the safer bet.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific July. For this
week’s actual forecast, each destination links to its live page below.
Nashville
TN
- Clear days, July
- 19%
- Sample size
- n=248 days
- Avg high
- 89°F
- Early July (1st–15th)
- 24%
- Late July (16th–end)
- 14%
- Rain frequency
- 58% of days
San Antonio
TX
- Clear days, July
- 44%
- Sample size
- n=248 days
- Avg high
- 95°F
- Early July (1st–15th)
- 38%
- Late July (16th–end)
- 50%
- Rain frequency
- 29% of days
Compare Nashville vs San Antonio 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.