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SunnyDays

ERA5 almanac — 8 years of real data

Scottsdale Desert Ridge in August

Historically one of the better months to visit Scottsdale Desert Ridge for sun: 78% of days are clear on average (n=248, avg high 104°F). Every percentage here is a historical average from 8 years of ERA5 data — 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 Scottsdale Desert Ridge 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 August

Clear-sky percentage for Scottsdale Desert Ridge in August, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early August
1st–15th		 83% n=120 104°F
Late August
16th–end		 73% n=128 104°F
Full month average 78% n=248 104°F

Bottom line

Scottsdale Desert Ridge clears solidly in August: 78% of days historically (n=248), avg high 104°F. Most trips here in August will find more sun than cloud.

Every month in Scottsdale Desert Ridge

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

Historical clear-sky % for Scottsdale Desert Ridge, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 13% n=248 All destinations →
February 35% n=226 All destinations →
March 46% n=248 All destinations →
April 92% n=240 All destinations →
May 92% n=248 All destinations →
June 94% n=240 All destinations →
July 76% n=248 All destinations →
August ← this page 78% n=248 All destinations →
September 82% n=240 All destinations →
October 85% n=248 All destinations →
November 58% n=240 All destinations →
December 18% n=248 All destinations →

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.