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Monthly climate in Brockville, Ontario, Canada

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Brockville features a humid continental climate (Dfb).Temperatures typically range between -6 °C (22 °F) and 22 °C (72 °F) through the year, but rarely can drop to -30 °C (-22 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1232 mm (48.5 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually.Brockville enjoys an average of 2698 hours of sunshine throughout the year, and daylight varies from 8 hours 51 minutes to 15 hours 29 minutes per day.

Monthly average temperatures in Brockville, Ontario, Canada §

The warmest months in Brockville are June, July and August, with daily mean temperatures ranging from 18 to 22 °C (65 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -2 °C (22 - 29 °F) throughout the day. On average each year, Brockville experiences 54 days above 25 °C (77.0 °F) and 118 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Brockville, Ontario, Canada.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 13°C
(55°F)		 13°C
(56°F)		 21°C
(70°F)		 30°C
(86°F)		 33°C
(91°F)		 33°C
(92°F)		 36°C
(97°F)		 31°C
(88°F)		 32°C
(89°F)		 26°C
(79°F)		 22°C
(71°F)		 15°C
(59°F)
Mean maximum 8°C
(46°F)		 9°C
(48°F)		 16°C
(60°F)		 23°C
(73°F)		 30°C
(86°F)		 31°C
(88°F)		 32°C
(90°F)		 30°C
(86°F)		 29°C
(84°F)		 24°C
(76°F)		 16°C
(62°F)		 11°C
(52°F)
Average high -2°C
(28°F)		 -1°C
(31°F)		 4°C
(39°F)		 11°C
(52°F)		 19°C
(66°F)		 24°C
(75°F)		 27°C
(80°F)		 26°C
(79°F)		 22°C
(72°F)		 15°C
(59°F)		 6°C
(44°F)		 1°C
(34°F)
Daily mean -6°C
(22°F)		 -5°C
(23°F)		 -0°C
(31°F)		 6°C
(44°F)		 13°C
(56°F)		 18°C
(65°F)		 22°C
(72°F)		 21°C
(70°F)		 17°C
(63°F)		 11°C
(52°F)		 3°C
(38°F)		 -2°C
(29°F)
Average low -10°C
(15°F)		 -10°C
(15°F)		 -5°C
(24°F)		 2°C
(36°F)		 8°C
(46°F)		 13°C
(55°F)		 17°C
(63°F)		 17°C
(63°F)		 13°C
(55°F)		 7°C
(45°F)		 -0°C
(32°F)		 -5°C
(24°F)
Mean minimum -25°C
(-12°F)		 -22°C
(-7°F)		 -18°C
(-0°F)		 -4°C
(25°F)		 1°C
(33°F)		 7°C
(45°F)		 12°C
(54°F)		 11°C
(52°F)		 6°C
(43°F)		 0°C
(32°F)		 -10°C
(14°F)		 -17°C
(2°F)
Minimum -30°C
(-22°F)		 -27°C
(-16°F)		 -22°C
(-7°F)		 -8°C
(18°F)		 -1°C
(30°F)		 4°C
(39°F)		 9°C
(48°F)		 10°C
(50°F)		 2°C
(36°F)		 -3°C
(27°F)		 -14°C
(7°F)		 -26°C
(-14°F)

Compare climate in Brockville with other places

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

Monthly average precipitation in Brockville, Ontario, Canada §

Brockville usually has the most precipitation in April, July and October, with an average of 13 rainy days and 134 mm (5.3 inches) of precipitation per month.The driest months in Brockville are January, February and September. On average, 79 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Brockville, Ontario, Canada.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) 82 (3.2) 82 (3.2) 84 (3.3) 125 (4.9) 103 (4.1) 94 (3.7) 127 (5.0) 105 (4.2) 73 (2.9) 151 (5.9) 113 (4.5) 93 (3.7)
Average precipitation days (≥ 1 mm) 11 12 11 13 13 11 14 14 9 13 14 12

Monthly sunshine hours in Brockville, Ontario, Canada §

The sunniest months in Brockville are June, July and August, when the sun shines an average of 10 hours 41 minutes a day.Least sunny months in Brockville: January, February and December receive an average of 4 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Brockville, Ontario, Canada.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 106 145 223 225 272 318 338 326 281 194 148 117
Mean daily daylight hours 9h 14m 10h 26m 11h 57m 13h 30m 14h 49m 15h 29m 15h 7m 13h 56m 12h 27m 10h 55m 9h 33m 8h 51m

Solar UV radiation in Brockville, Ontario, Canada §

Brockville experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 9 - 9, which corresponds to the Very High category of sun exposure.January, November 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 Brockville UV Index data.

Average daily maximum UV levels by month for Brockville, Ontario, Canada.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 4 5 8 9 9 9 9 7 5 3 2