ERA5 almanac comparison — 8 years of real data
Bozeman vs Lake Tahoe: weather in December
Essentially a tie in December: Bozeman is 0% clear historically, Lake Tahoe is 0% clear (8-year ERA5 average) — within the noise. Avg high 36°F vs 41°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Bozeman
MT
- Clear days, December
- 0%
- Sample size
- n=248 days
- Avg high
- 36°F
- Early December (1st–15th)
- 0%
- Late December (16th–end)
- 0%
- Rain frequency
- 25% of days
Lake Tahoe
CA
- 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
- 37% of days
Frequently asked
Is Bozeman or Lake Tahoe warmer in December?
Lake Tahoe runs warmer by day in December. Bozeman averages highs of 36°F (highs n=248 days); Lake Tahoe averages highs of 41°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Bozeman or Lake Tahoe in December?
Days with measurable rain: Bozeman 25%, Lake Tahoe 37% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in December, Bozeman or Lake Tahoe?
Essentially a tie in December: Bozeman is 0% clear historically, Lake Tahoe is 0% clear (8-year ERA5 average) — within the noise. Avg high 36°F vs 41°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Bozeman vs Lake Tahoe 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.