humidity · United States
Houston, Texas
July mean dewpoint
Modelled demonstration series · not observed data
Dewpoint is the honest measure of muggy. A rise here means the air holds more water, which means sweat evaporates less, which means the body's only cooling mechanism works less well at the same thermometer reading. It also means any storm that forms has more fuel and drops more rain.
75 years, modelled
Same reading, two normals
| Normal | Mean | σ | Pct | Return |
|---|---|---|---|---|
| 1951–1980 | 22.8 °C | +2.70σ | 99.65th | 1 in 290 years |
| 1991–2020 | 24.2 °C | +0.48σ | 68th | 1 in 3.2 years |
Today would rank 16 of 76 for highest value in the modelled series. Nothing about the reading changes between rows — only the yardstick.
The season here
Gulf moisture floods inland every summer. Dewpoint, not temperature, is what makes a Houston July feel the way it does.
Where this series comes from
MODELLED SERIES — not observed. Parameters set from published Houston July dewpoint climatology and the documented rise in Gulf coast specific humidity. The 75 annual values are synthesised by the seeded generator.
Every number on this page comes from a modelled series: 75 annual values synthesised by a seeded generator from published climatological parameters for Houston, Texas. It shows how anomaly reasoning works. It is not a measurement and must not be cited as one.
How to read σ
σ counts standard deviations from this place's own normal. The sigma guide · return periods.
More humidity stations
Open Houston on the field →