nomadseason

Monthly climate in Marystown, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Marystown features a subarctic climate (Dfc). Temperatures typically range between -4 °C (26 °F) and 17 °C (64 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 26 °C (79 °F). The average annual precipitation amounts to about 1355 mm (53.3 inches) and receives 155 rainy days on the 1 mm (0.04 inches) threshold annually. Marystown enjoys an average of 2407 hours of sunshine throughout the year, and daylight varies from 8 hours 32 minutes to 15 hours 50 minutes per day.

Monthly average temperatures in Marystown, Canada

The warmest months in Marystown are July, August and September, with daily mean temperatures ranging from 14 to 17 °C (58 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -4 to -2 °C (26 - 29 °F) throughout the day. On average each year, Marystown experiences 0 days above 25 °C (77.0 °F) and 122 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Marystown. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum10°C
(50°F)		9°C
(49°F)		11°C
(53°F)		14°C
(57°F)		16°C
(61°F)		21°C
(69°F)		23°C
(74°F)		26°C
(79°F)		22°C
(73°F)		22°C
(71°F)		16°C
(61°F)		14°C
(57°F)
Mean maximum8°C
(46°F)		7°C
(45°F)		7°C
(46°F)		10°C
(51°F)		14°C
(57°F)		18°C
(64°F)		22°C
(72°F)		24°C
(76°F)		22°C
(71°F)		18°C
(64°F)		15°C
(59°F)		12°C
(53°F)
Average high0°C
(33°F)		-0°C
(32°F)		1°C
(34°F)		5°C
(42°F)		9°C
(48°F)		14°C
(57°F)		18°C
(65°F)		20°C
(69°F)		17°C
(62°F)		12°C
(53°F)		7°C
(46°F)		3°C
(37°F)
Daily mean-2°C
(28°F)		-4°C
(26°F)		-2°C
(29°F)		2°C
(37°F)		5°C
(42°F)		10°C
(51°F)		15°C
(59°F)		17°C
(64°F)		14°C
(58°F)		9°C
(49°F)		5°C
(41°F)		1°C
(33°F)
Average low-5°C
(23°F)		-7°C
(20°F)		-5°C
(24°F)		-0°C
(32°F)		3°C
(37°F)		7°C
(45°F)		12°C
(54°F)		14°C
(58°F)		11°C
(52°F)		7°C
(44°F)		2°C
(37°F)		-1°C
(30°F)
Mean minimum-11°C
(12°F)		-14°C
(7°F)		-12°C
(12°F)		-5°C
(23°F)		-0°C
(31°F)		3°C
(38°F)		8°C
(46°F)		10°C
(50°F)		6°C
(42°F)		2°C
(36°F)		-2°C
(28°F)		-7°C
(20°F)
Minimum-14°C
(7°F)		-18°C
(-0°F)		-13°C
(8°F)		-8°C
(18°F)		-1°C
(30°F)		0°C
(33°F)		7°C
(45°F)		8°C
(47°F)		3°C
(39°F)		0°C
(33°F)		-6°C
(22°F)		-9°C
(15°F)

Compare climate in Marystown with other places

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

Monthly average precipitation in Marystown, Canada

Marystown usually has the most precipitation in March, November and December, with an average of 15 rainy days and 141 mm (5.5 inches) of precipitation per month. The driest months in Marystown are May, June and August. On average, 89 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Marystown. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)109 (4.3)114 (4.5)126 (5.0)110 (4.3)94 (3.7)88 (3.5)114 (4.5)84 (3.3)108 (4.3)110 (4.3)140 (5.5)157 (6.2)
Average precipitation days (≥ 1 mm)141515131111111210121516

Monthly sunshine hours in Marystown, Canada

The sunniest months in Marystown are May, June and August, when the sun shines an average of 9 hours 3 minutes a day. Least sunny months in Marystown: January, November and December receive an average of 3 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Marystown. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours87138209216287254246290244190128111
Mean daily daylight hours8h 57m10h 17m11h 56m13h 38m15h 5m15h 50m15h 26m14h 8m12h 29m10h 48m9h 19m8h 32m

Solar UV radiation in Marystown, Canada

Marystown experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Marystown UV Index data.

Average daily maximum UV levels by month for Marystown. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235789886431