ERA5 almanac comparison — 8 years of real data
Las Vegas vs Savannah: weather in December
Savannah edges out Las Vegas for sun in December: 8% clear historically versus 0% (8-year ERA5 average, a 8-point gap). Savannah also sees measurably more rain than Las Vegas this month (27% vs 8% of days). Both are viable — Savannah is the safer bet.
Las Vegas
NV
- Clear days, December
- 0%
- Sample size
- n=248 days
- Avg high
- 59°F
- Early December (1st–15th)
- 1%
- Late December (16th–end)
- 0%
- Rain frequency
- 8% of days
Savannah
GA
- Clear days, December
- 8%
- Sample size
- n=248 days
- Avg high
- 63°F
- Early December (1st–15th)
- 7%
- Late December (16th–end)
- 9%
- Rain frequency
- 27% of days
Frequently asked
Is Las Vegas or Savannah warmer in December?
Savannah runs warmer by day in December. Las Vegas averages highs of 59°F (highs n=248 days); Savannah averages highs of 63°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Las Vegas or Savannah in December?
Savannah is measurably wetter than Las Vegas. Days with measurable rain: Las Vegas 8%, Savannah 27% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in December, Las Vegas or Savannah?
Savannah edges out Las Vegas for sun in December: 8% clear historically versus 0% (8-year ERA5 average, a 8-point gap). Savannah also sees measurably more rain than Las Vegas this month (27% vs 8% of days). Both are viable — Savannah is the safer bet.
Compare Las Vegas vs Savannah 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.