Monthly climate in Houston, Texas, United States

Last updated: June 28, 2022

Under the Köppen–Geiger climate classification Houston features a humid subtropical climate (Cfa). Temperatures typically range between 13 °C (55 °F) and 29 °C (84 °F) through the year, but rarely can drop to -12 °C (11 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 1561 mm (61.4 inches) and receives 161 rainy days on the 1 mm (0.04 inches) threshold annually. Houston enjoys an average of 3181 hours of sunshine throughout the year, and daylight varies from 10 hours 15 minutes to 14 hours 0 minutes per day.

Monthly average temperatures in Houston, Texas, United States §

The warmest months in Houston are June, July and August, with daily mean temperatures ranging from 28 to 29 °C (82 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 13 to 14 °C (55 - 58 °F) throughout the day. On average each year, Houston experiences 205 days above 25 °C (77.0 °F) and 6 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Houston, Texas, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 28°C
(83°F)
30°C
(86°F)
30°C
(87°F)
32°C
(90°F)
34°C
(93°F)
35°C
(95°F)
37°C
(99°F)
38°C
(100°F)
37°C
(99°F)
34°C
(93°F)
31°C
(88°F)
28°C
(83°F)
Mean maximum 26°C
(79°F)
27°C
(81°F)
29°C
(84°F)
31°C
(87°F)
33°C
(91°F)
34°C
(93°F)
36°C
(97°F)
36°C
(97°F)
35°C
(95°F)
32°C
(91°F)
29°C
(84°F)
27°C
(81°F)
Average high 18°C
(65°F)
20°C
(68°F)
24°C
(75°F)
26°C
(79°F)
29°C
(85°F)
32°C
(89°F)
33°C
(91°F)
33°C
(92°F)
31°C
(88°F)
28°C
(82°F)
22°C
(73°F)
20°C
(68°F)
Daily mean 13°C
(55°F)
14°C
(58°F)
19°C
(66°F)
21°C
(70°F)
25°C
(77°F)
28°C
(82°F)
28°C
(83°F)
29°C
(84°F)
27°C
(80°F)
22°C
(73°F)
17°C
(63°F)
14°C
(58°F)
Average low 8°C
(46°F)
10°C
(50°F)
14°C
(58°F)
16°C
(61°F)
21°C
(70°F)
24°C
(75°F)
25°C
(77°F)
25°C
(76°F)
23°C
(73°F)
18°C
(64°F)
12°C
(53°F)
10°C
(50°F)
Mean minimum -3°C
(28°F)
-1°C
(31°F)
4°C
(39°F)
7°C
(45°F)
14°C
(58°F)
22°C
(71°F)
22°C
(72°F)
22°C
(72°F)
17°C
(62°F)
7°C
(45°F)
3°C
(37°F)
0°C
(33°F)
Minimum -7°C
(19°F)
-12°C
(11°F)
-1°C
(31°F)
4°C
(39°F)
11°C
(51°F)
18°C
(65°F)
20°C
(68°F)
21°C
(70°F)
13°C
(55°F)
2°C
(37°F)
-1°C
(30°F)
-2°C
(29°F)

Compare climate in Houston with other places

Compare temperature, precipitation, sunshine, UV index in Houston, Texas, United States with other places around the world.

Monthly average precipitation in Houston, Texas, United States §

Houston usually has the most precipitation in May, August and September, with an average of 16 rainy days and 193 mm (7.6 inches) of precipitation per month. The driest months in Houston are January, Mart and November. On average, 87 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Houston, Texas, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 91 (3.6) 95 (3.8) 86 (3.4) 94 (3.7) 176 (6.9) 171 (6.7) 146 (5.8) 201 (7.9) 202 (8.0) 104 (4.1) 82 (3.2) 111 (4.4)
Average precipitation days (≥ 1 mm) 9 14 13 11 16 17 16 19 15 12 10 9

Monthly sunshine hours in Houston, Texas, United States §

The sunniest months in Houston are June, July and August, when the sun shines an average of 10 hours 31 minutes a day. Least sunny months in Houston: January, February and December receive an average of 6 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Houston, Texas, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 173 169 255 273 310 317 328 322 278 280 253 223
Mean daily daylight hours 10h 27m 11h 8m 12h 0m 12h 54m 13h 39m 14h 0m 13h 48m 13h 9m 12h 17m 11h 24m 10h 38m 10h 15m

Solar UV radiation in Houston, Texas, United States §

Houston experiences the highest level of ultraviolet (UV) radiation in July, August and September, when the maximum UV index can reach values of 12 - 13, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Houston UV Index data.

Average daily maximum UV levels by month for Houston, Texas, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 5 9 11 10 11 10 13 13 12 9 7 5