ERA5 almanac comparison — 8 years of real data

Houston vs Moab: weather in October

Essentially a tie in October: Houston is 44% clear historically, Moab is 41% clear (8-year ERA5 average) — within the noise. Avg high 81°F vs 70°F. Houston also sees measurably more rain than Moab this month (35% vs 16% 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 October. For this week’s actual forecast, each destination links to its live page below.

Houston

Clear days, October: 44%
Sample size: n=248 days
Avg high: 81°F
Early October (1st–15th): 53%
Late October (16th–end): 35%
Rain frequency: 35% of days

Moab

Clear days, October: 41%
Sample size: n=248 days
Avg high: 70°F
Early October (1st–15th): 55%
Late October (16th–end): 27%
Rain frequency: 16% of days

Compare Houston vs Moab 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.