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SunnyDays

ERA5 almanac — 8 years of real data

Scottsdale in July

Scottsdale in July: 11% of days see measurable rain, 107°F average high, 76% of days historically clear (n=248, ERA5 2018–2025).

Historically one of the better months to visit Scottsdale for sun: 76% of days are clear on average (n=248, avg high 107°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 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 July

Clear-sky percentage for Scottsdale in July, split by half-month. “n” is the number of days sampled across 8 years (2018–2025).
Period % Clear days Sample (n) Avg high
Early July
1st–15th		 87% n=120 107°F
Late July
16th–end		 66% n=128 107°F
Full month average 76% n=248 107°F

Sunshine & warmth in July

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 Scottsdale in July. Primary: % of days ≥ 72°F with > 6 h of sunshine.
Period Warm & sunny (≥72°F, >6 h sun) Sample (n)
Early July
1st–15th		 99% n=120
Late July
16th–end		 97% n=128
Full month average 98% n=248
12.9 h median sunshine per day 94% of days exceed 8 h sunshine 11% of days see ≥ 1 mm rain — rain is not hidden
Comparison (old vs new): WMO-code “clear” bar: 76%. Sunshine-based “warm & sunny”: 98%. The 22-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

Scottsdale clears solidly in July: 76% of days historically (n=248), avg high 107°F. The two halves differ materially (87% early, 66% late) — favour the early half of the month. Most trips here in July will find more sun than cloud.

Every month in Scottsdale

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

Historical clear-sky % for Scottsdale, all months, ERA5 2018–2025.
Month % Clear Sample (n)
January 18% n=248 All destinations →
February 42% n=226 All destinations →
March 57% n=248 All destinations →
April 92% n=240 All destinations →
May 93% n=248 All destinations →
June 95% n=240 All destinations →
July ← this page 76% n=248 All destinations →
August 75% n=248 All destinations →
September 82% n=240 All destinations →
October 83% n=248 All destinations →
November 65% n=240 All destinations →
December 25% n=248 All destinations →

Frequently asked

Does it rain in Scottsdale in July?

Rarely. Only 11% of days in Scottsdale see measurable rain in July, based on 8 years of ERA5 historical data (n=248 days, 2018–2025). This is a historical average, not a forecast.

Is Scottsdale good for sun in July?

Yes. Scottsdale is historically strong for sun in July: 76% of days are clear on average (avg high 107°F, n=248 days, ERA5 2018–2025).

How Scottsdale compares in July

Head-to-head clear-sky comparisons against destinations travelers plausibly weigh against Scottsdale 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.