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SunnyDays

ERA5 almanac — 8 years of real data

Door County in June

Door County in June: 36% of days see measurable rain, 72°F average high, 22% of days historically clear (n=240, ERA5 2018–2025).

Door County in June is historically a poor month for sun: only 22% of days clear across 8 years (n=240, avg high 72°F). August is the clearest month for Door County historically. 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 Door County 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 Door County 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		 22% n=120 72°F
Late June
16th–end		 23% n=120 72°F
Full month average 22% n=240 72°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 Door County 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		 32% n=120
Late June
16th–end		 53% n=120
Full month average 42% n=240
13.4 h median sunshine per day 87% of days exceed 8 h sunshine 36% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 22%. Sunshine-based “warm & sunny”: 42%. The 20-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

Door County is mostly overcast in June historically: only 22% of days are clear across 8 years (n=240), avg high 72°F. If you want sun in Door County, August is historically much better. Most visitors this month will see more clouds than sun.

→ See all destinations in August — historically the best month for sun in Door County.

Every month in Door County

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

Historical clear-sky % for Door County, 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 0% n=240 All destinations →
May 4% n=248 All destinations →
June ← this page 22% n=240 All destinations →
July 40% n=248 All destinations →
August 42% n=248 All destinations →
September 18% n=240 All destinations →
October 3% n=248 All destinations →
November 0% n=240 All destinations →
December 0% n=248 All destinations →

Frequently asked

Does it rain in Door County in June?

Sometimes. Door County sees measurable rain on 36% of days in June historically (n=240 days, ERA5 2018–2025) — not frequent enough to plan around, but not negligible either.

Is Door County good for sun in June?

Not usually. Door County is historically overcast in June: only 22% of days are clear (avg high 72°F, n=240 days, ERA5 2018–2025). August is historically far better for sun here.

How Door County compares in June

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

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.