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Monthly climate in Houston, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Houston features a subarctic climate (Dfc). Temperatures typically range between -9 °C (16 °F) and 13 °C (56 °F) through the year, but rarely can drop to -41 °C (-41 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 867 mm (34.1 inches) and receives 160 rainy days on the 1 mm (0.04 inches) threshold annually. Houston enjoys an average of 2414 hours of sunshine throughout the year, and daylight varies from 7 hours 22 minutes to 17 hours 7 minutes per day.

Monthly average temperatures in Houston, Canada

The warmest months in Houston are June, July and August, with daily mean temperatures ranging from 11 to 13 °C (52 - 56 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -8 °C (16 - 18 °F) throughout the day. On average each year, Houston experiences 6 days above 25 °C (77.0 °F) and 188 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. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum5°C
(41°F)		7°C
(45°F)		13°C
(55°F)		16°C
(61°F)		24°C
(76°F)		34°C
(94°F)		31°C
(88°F)		29°C
(85°F)		24°C
(75°F)		17°C
(63°F)		8°C
(46°F)		5°C
(41°F)
Mean maximum3°C
(38°F)		4°C
(39°F)		8°C
(47°F)		13°C
(56°F)		20°C
(69°F)		25°C
(77°F)		27°C
(80°F)		27°C
(81°F)		21°C
(70°F)		13°C
(56°F)		7°C
(44°F)		3°C
(38°F)
Average high-5°C
(23°F)		-4°C
(24°F)		2°C
(36°F)		6°C
(43°F)		13°C
(56°F)		16°C
(61°F)		19°C
(66°F)		18°C
(65°F)		13°C
(56°F)		6°C
(43°F)		1°C
(34°F)		-5°C
(22°F)
Daily mean-8°C
(17°F)		-9°C
(16°F)		-3°C
(27°F)		1°C
(34°F)		8°C
(46°F)		11°C
(52°F)		13°C
(56°F)		13°C
(56°F)		8°C
(48°F)		2°C
(36°F)		-2°C
(29°F)		-8°C
(18°F)
Average low-11°C
(12°F)		-13°C
(8°F)		-8°C
(18°F)		-4°C
(26°F)		2°C
(36°F)		5°C
(42°F)		8°C
(46°F)		8°C
(46°F)		4°C
(40°F)		-2°C
(29°F)		-5°C
(24°F)		-11°C
(13°F)
Mean minimum-30°C
(-21°F)		-26°C
(-15°F)		-19°C
(-1°F)		-13°C
(9°F)		-3°C
(27°F)		-0°C
(32°F)		4°C
(39°F)		2°C
(36°F)		-2°C
(28°F)		-9°C
(17°F)		-13°C
(9°F)		-22°C
(-7°F)
Minimum-41°C
(-41°F)		-32°C
(-25°F)		-25°C
(-12°F)		-18°C
(-1°F)		-6°C
(22°F)		-2°C
(29°F)		2°C
(35°F)		1°C
(34°F)		-4°C
(24°F)		-13°C
(9°F)		-20°C
(-4°F)		-40°C
(-39°F)

Compare climate in Houston with other places

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

Monthly average precipitation in Houston, Canada

Houston usually has the most precipitation in September, October and November, with an average of 15 rainy days and 104 mm (4.1 inches) of precipitation per month. The driest months in Houston are February, April and August. On average, 50 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Houston. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)78 (3.1)57 (2.2)57 (2.3)40 (1.6)64 (2.5)68 (2.7)72 (2.8)52 (2.1)93 (3.7)101 (4.0)117 (4.6)67 (2.6)
Average precipitation days (≥ 1 mm)141212121215131114151812

Monthly sunshine hours in Houston, Canada

The sunniest months in Houston are May, June and July, when the sun shines an average of 10 hours 26 minutes a day. Least sunny months in Houston: January, November and December receive an average of 2 hours 14 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Houston. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours561432092513133133343041881486980
Mean daily daylight hours7h 58m9h 45m11h 55m14h 8m16h 5m17h 7m16h 32m14h 45m12h 37m10h 25m8h 26m7h 22m

Solar UV radiation in Houston, Canada

Houston experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure. January, February and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Houston UV Index data.

Average daily maximum UV levels by month for Houston. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124577876321