Houston's climate is humid subtropical with the Gulf of Mexico parked next door, which means heat, sticky air, and lots of rain. Summer afternoons are reliably in the mid-90s with dew points pushing 75°F, and convective storms fire off most days from June through September. The city sits in peak Atlantic hurricane territory, with August and September the most likely landfall window. Winters are mild — hard freezes happen a few times most years — and the rare deep cold snap, like the February 2021 event, is genuinely disruptive precisely because it's so unusual.
Climate and Average Weather Year Round in Houston
Year-round temperature
In Houston, the warmest months are June through September, with average daily highs between 89°F and 94°F. The coldest stretch runs December through February, with highs between 64°F and 68°F and overnight lows reaching 46°F.
Rainfall through the year
Rainfall in Houston averages 4.6 in per month over the long run. June is the wettest at 6.1 in, while February is the driest at 2.9 in.
Days at 90 °F or hotter
Houston averages 97.1 days per year at 90 °F or hotter. The hottest year on record saw 136 such days (2025); the coolest just 5 (2026).
Precipitation this year
As of May 29, Houston has received 16.9 in of precipitation this year — 13% below the long-term normal for this point in the year (19.4 in).