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SunnyDays

ERA5 almanac comparison — 8 years of real data

Santa Fe vs Vail: weather in December

Essentially a tie in December: Santa Fe is 0% clear historically, Vail is 0% clear (8-year ERA5 average) — within the noise. Avg high 41°F vs 32°F. Vail also sees measurably more rain than Santa Fe this month (38% vs 13% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.

What you are reading: 8-year historical averages, not a forecast. Either destination can still surprise you this specific December. For this week’s actual forecast, each destination links to its live page below.

Santa Fe

NM

Clear days, December
0%
Sample size
n=248 days
Avg high
41°F
Early December (1st–15th)
0%
Late December (16th–end)
0%
Rain frequency
13% of days

Vail

CO

Clear days, December
0%
Sample size
n=248 days
Avg high
32°F
Early December (1st–15th)
0%
Late December (16th–end)
0%
Rain frequency
38% of days

Compare Santa Fe vs Vail 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 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.