ERA5 almanac — 8 years of real data

New York City in June

New York City in June: 37% of days see measurable rain, 80°F average high, 39% of days historically clear (n=240, ERA5 2018–2025).

New York City in June is historically a poor month for sun: only 39% of days clear across 8 years (n=240, avg high 80°F). Historical average, not a forecast.

What you are reading: 8-year historical averages from the ERA5 reanalysis, not a forecast. A month that is historically 90% clear can still be overcast on your specific trip. For this week’s actual forecast, see the live New York City page. Both can be true at once: “historically strong in this month; this particular week is not.” We label which is which.

Early vs. Late June

Clear-sky percentage for New York City in June, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period	% Clear days	Sample (n)	Avg high
Early June 1st–15th	33%	n=120	80°F
Late June 16th–end	45%	n=120	80°F
Full month average	39%	n=240	80°F

Sunshine & warmth in June

A second measure using actual sunshine hours (ERA5 sunshine_duration), not the daily weather code. A Lowcountry day with 12 hours of sun and a 25-minute afternoon storm is counted below as a warm, sunny day — because it was. How we define this.

Sunshine-based metrics for New York City in June. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period	Warm & sunny (≥72°F, >6 h sun)	Sample (n)
Early June 1st–15th	76%	n=120
Late June 16th–end	87%	n=120
Full month average	82%	n=240

12.9 h median sunshine per day 82% of days exceed 8 h sunshine 37% of days see ≥ 1 mm rain — rain is not hidden

Comparison (old vs new): WMO-code “clear” bar: 39%. Sunshine-based “warm & sunny”: 82%. The 43-point gap is from brief afternoon convective storms that stamp the whole day as “rain” in the WMO code but leave the bulk of the sunshine untouched.

Bottom line

New York City is mostly overcast in June historically: only 39% of days are clear across 8 years (n=240), avg high 80°F. Most visitors this month will see more clouds than sun.

Every month in New York City

Compare across all months with data. Numbers are historical clear-sky %.

Historical clear-sky % for New York City, all months, ERA5 2018–2025.
Month	% Clear	Sample (n)
January	0%	n=248	All destinations →
February	0%	n=226	All destinations →
March	0%	n=248	All destinations →
April	6%	n=240	All destinations →
May	24%	n=248	All destinations →
June ← this page	39%	n=240	All destinations →
July	31%	n=248	All destinations →
August	35%	n=248	All destinations →
September	40%	n=240	All destinations →
October	13%	n=248	All destinations →
November	2%	n=240	All destinations →
December	0%	n=248	All destinations →

Frequently asked

Does it rain in New York City in June?

Sometimes. New York City sees measurable rain on 37% of days in June historically (n=240 days, ERA5 2018–2025) — not frequent enough to plan around, but not negligible either.

Is New York City good for sun in June?

It's mixed. New York City in June is clear on 39% of days historically (avg high 80°F, n=240 days, ERA5 2018–2025) — the outcome varies year to year.

How New York City compares in June

Head-to-head clear-sky comparisons against destinations travelers plausibly weigh against New York City this month — same passport tier, similar flight distance, both sides from the same 8-year ERA5 record.

→ New York City vs Hartford in June — Hartford is 39% clear historically
→ New York City vs Shenandoah Valley in June — Shenandoah Valley is 39% clear historically
→ New York City vs Bozeman in June — Bozeman is 38% clear historically

→ New York City live forecast — this week’s actual 7-day weather, not historical
→ Best destinations in June — all destinations ranked by June clear-sky %
→ All destinations
→ Raw data (JSON) — buckets, n, source

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.