Houston, Texas climate: Normal weather by month, frost dates and records

What is the weather like in Houston each month?

August is the warmest month, with normal highs of 95°F; January the coldest, with normal lows of 44°F. The most precipitation falls in June (6.00 in), the least in February (2.97 in).

Each month has its own page with the day-by-day normals, the month's records and its recent years:

• Jan
• Feb
• Mar
• Apr
• May
• Jun
• Jul
• Aug
• Sep
• Oct
• Nov
• Dec

When is the best weather to visit Houston?

Normal highs sit between 65°F and 85°F in February, March, April, October, November and December. Of those, April has the fewest days with rain (7).

That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.

When is the last frost in Houston?

In Houston, the last spring frost (32°F) comes after February 13 in half of years and after March 12 in one year in ten; the first autumn frost comes before December 9 in half of years and before November 17 in one year in ten.

Last spring frost, half of years after

February 131 year in 10 after March 12; 9 in 10 after January 12

First autumn frost, half of years before

December 91 year in 10 before November 17; 9 in 10 before January 11

NOAA puts the median frost-free season at 300 days, and the season without a hard freeze (28°F) at 343 days.

A hard freeze (28°F) comes after January 27 in half of springs and before January 2 in half of autumns.

The USDA's 2023 Plant Hardiness Zone Map puts Houston in zone 9b across its 104 ZIP code areas (9b in 77032, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Houston's NOAA station is in zone 9b: the coldest night of a typical year reaches 26°F (30 complete years).

Frost dates for every NOAA station in Texas · Frost dates by ZIP code

What hardiness zone is each Houston ZIP code in?

The USDA's 2023 map gives each ZIP code area one zone. Houston's 104 ZIP code areas are all in zone 9b. Each ZIP's frost dates are in the frost tool.

How hot and how cold does it get in Houston?

In a normal year in Houston, 111 days a year reach 90°F (7 of them 100°F or more), 10 nights fall to 32°F or colder and 104 days bring measurable precipitation.

Days at 90°F or more

111a normal year

Days at 100°F or more

7a normal year

Nights at 32°F or colder

10a normal year

Days that stay below freezing

fewer than 1high of 32°F or less

Days with 0.01 inch of precipitation

104a normal year

The highest temperature in Houston's official record (kept by the National Weather Service since 1888) is 109°F, on August 27, 2011; the lowest is 5°F, on January 18, 1930.

The wettest calendar year on that record is 2017, with 79.69 in; the snowiest season is 1972–73, with 4.8 inches.

How humid and windy is Houston, and how clear are its skies?

The summer (June-August) dew point averages 73°F. The muggiest month is July, with an average dew point of 73°F, above the 65°F at which most people call the air sticky; the driest air comes in December (43°F). April is the windiest month (9.0 mph on average), and September has the most clear or nearly clear hours (49%).

How sunny is Houston?

Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Houston, 4.7 kWh per square metre a day. October is the sunniest month (83%) and February the cloudiest (66%). Among the 459 U.S. places of 50,000 or more, that ranks tied 243rd (with 32 others) in sunshine.

How much heating and cooling does Houston need?

A normal year in Houston brings 1,266 heating degree days, 76% fewer than the median U.S. place (5,373), and 3,288 cooling degree days, 3.6 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 7,657 growing degree days a year above 50°F.

Has Houston been warmer than normal lately?

2025 averaged 73.0°F, 2.5°F above the 1991-2020 normal of 70.5°F. 5 of the 5 complete years since 2021 ran warmer than the normal.

Over 71 complete years from 1948 to 2025, the station's annual mean temperature rose at a fitted 4.1°F per century (+0.23°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.

Which places near Houston share this climate record?

9 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.

• Atascocita, TXalso near: Baytown (13 mi, 68.7°F a year); Houston Hobby Airport (24 mi, 71.1°F a year)93,926 people · 10 mi E
• Spring, TXalso near: Conroe (20 mi, 67.7°F a year); Baytown (26 mi, 68.7°F a year)67,103 people · 6 mi N
• Humble, TX16,561 people · 6 mi E
• Aldine, TX15,434 people · 5 mi S
• Tomball, TX15,152 people · 17 mi NW
• Jersey Village, TX7,791 people · 14 mi SW
• Oak Ridge North, TX3,003 people · 13 mi N
• Porter Heights, TX1,063 people · 12 mi N
• Hilshire Village, TX837 people · 15 mi SW

What do Houston's other NOAA stations record?

3 more NOAA stations keep 1991-2020 normals in or near Houston. This page uses Houston Intercontinental Airport; the others differ by site and elevation, and the linked ones have pages of their own:

Nearby and next

• Houston in OctoberThis month day by day, its records and recent years
• Texas climateThe statewide normals and every place in the state
• Baytown, TX22 miles from this station, 68.7°F a year
• Houston Hobby Airport, TX24 miles from this station, 71.1°F a year
• Conroe, TX26 miles from this station, 67.7°F a year
• Sugar Land, TX30 miles from this station, 70.6°F a year
• Compare two placesMonth by month, side by side

Download these normals (CSV) · JSON · How these figures are made