ERA5 almanac comparison — 8 years of real data

Dallas vs Houston: weather in November

Essentially a tie in November: Dallas is 21% clear historically, Houston is 25% clear (8-year ERA5 average) — within the noise. Avg high 68°F vs 72°F. Houston also sees measurably more rain than Dallas this month (38% vs 23% 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 November. For this week’s actual forecast, each destination links to its live page below.

Dallas

Clear days, November: 21%
Sample size: n=240 days
Avg high: 68°F
Early November (1st–15th): 27%
Late November (16th–end): 15%
Rain frequency: 23% of days

Houston

Clear days, November: 25%
Sample size: n=240 days
Avg high: 72°F
Early November (1st–15th): 32%
Late November (16th–end): 18%
Rain frequency: 38% of days

Compare Dallas vs Houston 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.