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SunnyDays

ERA5 almanac comparison — 8 years of real data

Lake Tahoe vs Scottsdale Desert Ridge: weather in May

Scottsdale Desert Ridge is the clear winner for sun in May: 92% of days historically clear versus just 5% in Lake Tahoe — a 87-point gap across 8 years of ERA5 data. Lake Tahoe also sees measurably more rain than Scottsdale Desert Ridge this month (25% vs 2% of days). This isn't close.

What you are reading: 8-year historical averages, not a forecast. Either destination can still surprise you this specific May. For the actual forecast right now, each destination links to its live page below.

Lake Tahoe

CA

Clear days, May
5%
Sample size
n=248 days
Avg high
60°F
Early May (1st–15th)
0%
Late May (16th–end)
9%
Rain frequency
25% of days

Scottsdale Desert Ridge

AZ

Clear days, May
92%
Sample size
n=248 days
Avg high
93°F
Early May (1st–15th)
89%
Late May (16th–end)
95%
Rain frequency
2% of days

Frequently asked

Is Lake Tahoe or Scottsdale Desert Ridge warmer in May?

Scottsdale Desert Ridge runs warmer by day in May. Lake Tahoe averages highs of 60°F (highs n=248 days); Scottsdale Desert Ridge averages highs of 93°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.

Does it rain more in Lake Tahoe or Scottsdale Desert Ridge in May?

Lake Tahoe is measurably wetter than Scottsdale Desert Ridge. Days with measurable rain: Lake Tahoe 25%, Scottsdale Desert Ridge 2% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.

Which is sunnier in May, Lake Tahoe or Scottsdale Desert Ridge?

Scottsdale Desert Ridge is the clear winner for sun in May: 92% of days historically clear versus just 5% in Lake Tahoe — a 87-point gap across 8 years of ERA5 data. Lake Tahoe also sees measurably more rain than Scottsdale Desert Ridge this month (25% vs 2% of days). This isn't close.

Compare Lake Tahoe vs Scottsdale Desert Ridge 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 forecast for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.