ERA5 almanac comparison — 8 years of real data
Hartford vs New York City: weather in July
Essentially a tie in July: Hartford is 34% clear historically, New York City is 31% clear (8-year ERA5 average) — within the noise. Avg high 86°F vs 87°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
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.
Hartford
CT
- Clear days, July
- 34%
- Sample size
- n=248 days
- Avg high
- 86°F
- Early July (1st–15th)
- 32%
- Late July (16th–end)
- 36%
New York City
NY
- Clear days, July
- 31%
- Sample size
- n=248 days
- Avg high
- 87°F
- Early July (1st–15th)
- 28%
- Late July (16th–end)
- 34%
Compare Hartford vs New York City 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.