Houston, TX climate: monthly averages and frost dates
Houston, TX has mild winters and hot summers by this site's scale, with wet annual precipitation. The figures are the 1991–2020 climate normals for NOAA station USW00012960 (HOUSTON INTERCONT AP), 14 mi (22 km) in a straight line from the city's center point (US Census).
- Warmest month high
- 94.9°F
- August
- Coldest month mean
- 53.8°F
- January
- Precipitation
- 51.8 in
- per year
- Snowfall
- 0.1 in
- per year
- Median last frost
- February 13
- 32°F, spring
- Median first frost
- December 9
- 32°F, autumn
Monthly averages in Houston
| Month | High °F | Low °F | Mean °F | Precip. in | Snow in | Days ≥0.01 in | Days ≥90°F | Nights ≤32°F |
|---|---|---|---|---|---|---|---|---|
| January | 63.8 | 43.7 | 53.8 | 3.76 | 0.0 | 10.0 | 0.0 | 4.1 |
| February | 67.8 | 47.6 | 57.7 | 2.97 | 0.0 | 8.8 | 0.0 | 1.7 |
| March | 74.0 | 53.6 | 63.8 | 3.47 | 0.0 | 8.8 | 0.1 | 0.7 |
| April | 80.1 | 59.8 | 70.0 | 3.95 | 0.0 | 7.3 | 0.9 | 0.0 |
| May | 86.9 | 67.8 | 77.4 | 5.01 | 0.0 | 8.6 | 9.5 | 0.0 |
| June | 92.3 | 73.7 | 83.0 | 6.00 | 0.0 | 10.0 | 23.1 | 0.0 |
| July | 94.5 | 75.7 | 85.1 | 3.77 | 0.0 | 9.1 | 27.3 | 0.0 |
| August | 94.9 | 75.4 | 85.2 | 4.84 | 0.0 | 8.5 | 27.1 | 0.0 |
| September | 90.4 | 70.6 | 80.5 | 4.71 | 0.0 | 8.4 | 18.3 | 0.0 |
| October | 82.8 | 60.9 | 71.8 | 5.46 | 0.0 | 7.7 | 5.0 | 0.0 |
| November | 72.6 | 51.5 | 62.0 | 3.87 | 0.0 | 7.6 | 0.0 | 0.7 |
| December | 65.3 | 45.6 | 55.4 | 4.03 | 0.1 | 9.6 | 0.0 | 2.9 |
| Year | 80.4 | 60.5 | 70.5 | 51.84 | 0.1 | 104.4 | 111.3 | 10.1 |
How cold is winter in Houston?
Winters in Houston are mild by this site's scale (coldest-month mean 45 to under 60°F). The coldest month is January, with a mean temperature of 53.8°F (12.1°C), a normal daily high of 63.8°F (17.7°C) and a normal daily low of 43.7°F (6.5°C).
The station averages 10.1 nights a year at or below 32°F and 0.1 days when the high stays at or below 32°F.
How hot is summer in Houston?
Summers in Houston are hot by this site's scale (hottest-month high 90 to under 100°F). August has the highest normal daily high, 94.9°F (34.9°C), with nights averaging 75.4°F (24.1°C).
The high reaches 90°F or more on 111.3 days in a normal year.
The normal daily high itself is 90°F or above in June to September.
What is the wettest month in Houston?
Houston gets 51.84 in (1317 mm) of precipitation in a normal year, which this site classes as wet (40 to under 60 in a year). The wettest month is June with 6.00 in (152 mm); the driest is February with 2.97 in (75 mm).
Measurable precipitation (0.01 in or more) falls on 104.4 days a year.
Does it snow in Houston?
Snow is rare in Houston: the normal annual snowfall is 0.1 in (0 cm).
Which months are mild in Houston?
6 months in Houston meet this site's comfort thresholds (normal high 65–85°F, low 45°F or higher, fewer than 10 days with 0.10 in or more of precipitation): February to April and October to December.
Thresholds and their limits: methodology.
Frost dates and growing season in Houston
In Houston the median last spring night at or below 32°F is February 13, and the median first autumn one is December 9 (NOAA P50 dates). NOAA's median length of the freeze-free season is 300 days. NOAA takes that median over each year's own season, so it need not equal the 299 days between the two median dates.
There is still a 10% chance of a 32°F night on or after March 12, and a 10% chance that the first one has come by November 17.
The chance that the last spring 32°F night comes on or after January 12 is 90%.
For a hard freeze (28°F or lower) the median dates are January 27 in spring and January 2 in autumn.
| Chance | Last spring 32°F night on or after | First autumn 32°F night by | Freeze-free season, days |
|---|---|---|---|
| 10% | March 12 | November 17 | 339 |
| 20% | March 4 | November 25 | 326 |
| 30% | February 28 | December 1 | 316 |
| 40% | February 20 | December 4 | 307 |
| 50% | February 13 | December 9 | 300 |
| 60% | February 5 | December 15 | 292 |
| 70% | January 31 | December 23 | 285 |
| 80% | January 24 | January 1 | 275 |
| 90% | January 12 | January 11 | 264 |
| Threshold | Median last date (spring) | Median first date (autumn or winter) | Median season, days |
|---|---|---|---|
| 36°F | March 2 | November 25 | 266 |
| 32°F | February 13 | December 9 | 300 |
| 28°F | January 27 | January 2 | 343 |
| 24°F | No such night in most years, though a few years have one; no typical season to show | ||
| 20°F | No such night in a typical year (NOAA publishes no dates) | ||
| 16°F | No such night in a typical year (NOAA publishes no dates) | ||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 82% | 55% | 28% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 29% | 68% |
Nearby and similar places
Of the places on this site, the closest to Houston by station distance are Austin, TX at 145 mi (234 km), San Antonio, TX at 190 mi (305 km) and Dallas, TX at 224 mi (361 km).
Among places whose winter, summer and precipitation words are each within one band of Houston's (winter: mild, summer: hot, precipitation: wet), the closest monthly temperature and precipitation patterns are Atlanta, GA, Charlotte, NC and Austin, TX.
Compared with Austin, TX, Houston's peak-month normal high is 2.9°F (1.6°C) lower, its coldest-month mean is 1.6°F (0.9°C) higher, and its annual precipitation is 15.59 in more.
| Place | Listed as | Station distance | Coldest mean °F | Warmest high °F | Precip. in/yr | Snow in/yr | Last frost |
|---|---|---|---|---|---|---|---|
| Houston, TX | this page | – | 53.8 | 94.9 | 51.8 | 0.1 | February 13 |
| Austin, TX | nearby, similar | 145 mi (234 km) | 52.2 | 97.8 | 36.2 | 0.2 | February 20 |
| San Antonio, TX | nearby | 190 mi (305 km) | 52.2 | 96.0 | 32.4 | 0.2 | February 26 |
| Dallas, TX | nearby | 224 mi (361 km) | 46.3 | 95.8 | 37.0 | 1.6 | March 8 |
| Atlanta, GA | similar | 688 mi (1,108 km) | 44.8 | 90.1 | 50.4 | 2.2 | March 15 |
| Charlotte, NC | similar | 912 mi (1,468 km) | 42.1 | 90.3 | 43.6 | 3.5 | March 30 |
How nearby and similar places are chosen: methodology.
Source and station
The data for Houston come from NOAA station HOUSTON INTERCONT AP, TX US (USW00012960) at 29.9800, -95.3600, elevation 95 ft (29 m). It lies 14 mi (22 km) in a straight line from the center point of Houston city, the “internal point” in the US Census 2024 Gazetteer.
Each monthly normal used here rests on at least 24 years of data from 1991–2020 (NOAA's per-field year counts).
NOAA completeness flags on the monthly fields used here:
- S: Standard: meets WMO standards for data availability for 24 or more years.
Cite the data as:
Palecki, Michael; Durre, Imke; Applequist, Scott; Arguez, Anthony; Lawrimore, Jay (2021). U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). Station USW00012960 (HOUSTON INTERCONT AP, TX US). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/wck8-er13. Accessed 2026-10-09.
Palecki, Michael; Durre, Imke; Applequist, Scott; Arguez, Anthony; Lawrimore, Jay (2021). U.S. Climate Normals 2020: U.S. Annual/Seasonal Climate Normals (1991-2020). Station USW00012960 (HOUSTON INTERCONT AP, TX US). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/4ek7-fk11. Accessed 2026-10-09.
Files used: monthly normals CSV, annual/seasonal normals CSV (retrieved 2026-10-09). The values on this page as JSON: /us/tx/houston/data.json.