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Monthly climate in Ancaster, Ontario, Canada

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Ancaster features a humid continental climate (Dfb).Temperatures typically range between -4 °C (25 °F) and 22 °C (73 °F) through the year, but rarely can drop to -26 °C (-15 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 1003 mm (39.5 inches) and receives 133 rainy days on the 1 mm (0.04 inches) threshold annually.Ancaster enjoys an average of 2795 hours of sunshine throughout the year, and daylight varies from 9 hours 1 minutes to 15 hours 19 minutes per day.

Monthly average temperatures in Ancaster, Ontario, Canada §

The warmest months in Ancaster are June, July and August, with daily mean temperatures ranging from 19 to 22 °C (67 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to -1 °C (25 - 31 °F) throughout the day. On average each year, Ancaster experiences 59 days above 25 °C (77.0 °F) and 120 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ancaster, 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
(56°F)		 18°C
(65°F)		 20°C
(69°F)		 27°C
(81°F)		 32°C
(90°F)		 33°C
(92°F)		 33°C
(92°F)		 32°C
(91°F)		 32°C
(90°F)		 29°C
(85°F)		 22°C
(72°F)		 16°C
(61°F)
Mean maximum 10°C
(50°F)		 12°C
(54°F)		 17°C
(64°F)		 23°C
(73°F)		 30°C
(86°F)		 31°C
(88°F)		 32°C
(90°F)		 31°C
(87°F)		 30°C
(86°F)		 26°C
(79°F)		 16°C
(62°F)		 12°C
(54°F)
Average high -1°C
(31°F)		 1°C
(34°F)		 5°C
(42°F)		 11°C
(53°F)		 19°C
(66°F)		 24°C
(76°F)		 27°C
(81°F)		 26°C
(79°F)		 23°C
(73°F)		 15°C
(60°F)		 7°C
(45°F)		 2°C
(36°F)
Daily mean -4°C
(25°F)		 -3°C
(26°F)		 1°C
(34°F)		 7°C
(44°F)		 14°C
(57°F)		 19°C
(67°F)		 22°C
(73°F)		 21°C
(71°F)		 18°C
(64°F)		 11°C
(53°F)		 3°C
(38°F)		 -1°C
(31°F)
Average low -7°C
(19°F)		 -7°C
(19°F)		 -3°C
(26°F)		 2°C
(36°F)		 9°C
(48°F)		 14°C
(58°F)		 18°C
(64°F)		 17°C
(62°F)		 13°C
(55°F)		 7°C
(45°F)		 -0°C
(32°F)		 -4°C
(26°F)
Mean minimum -20°C
(-4°F)		 -18°C
(-1°F)		 -13°C
(9°F)		 -4°C
(25°F)		 0°C
(32°F)		 9°C
(48°F)		 13°C
(55°F)		 11°C
(52°F)		 6°C
(43°F)		 -0°C
(32°F)		 -11°C
(12°F)		 -14°C
(7°F)
Minimum -26°C
(-15°F)		 -24°C
(-10°F)		 -20°C
(-4°F)		 -6°C
(22°F)		 -3°C
(27°F)		 4°C
(40°F)		 11°C
(52°F)		 9°C
(48°F)		 2°C
(36°F)		 -2°C
(29°F)		 -19°C
(-2°F)		 -25°C
(-13°F)

Compare climate in Ancaster with other places

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

Monthly average precipitation in Ancaster, Ontario, Canada §

Ancaster usually has the most precipitation in April, June and October, with an average of 13 rainy days and 101 mm (4.0 inches) of precipitation per month.The driest months in Ancaster are January, March and September. On average, 68 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ancaster, 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) 69 (2.7) 73 (2.9) 64 (2.5) 103 (4.1) 96 (3.8) 98 (3.9) 93 (3.6) 89 (3.5) 69 (2.7) 101 (4.0) 75 (2.9) 73 (2.9)
Average precipitation days (≥ 1 mm) 8 11 9 13 12 12 12 12 9 14 10 11

Monthly sunshine hours in Ancaster, Ontario, Canada §

The sunniest months in Ancaster are June, July and August, when the sun shines an average of 11 hours 2 minutes a day.Least sunny months in Ancaster: January, February and December receive an average of 4 hours 9 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ancaster, 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 109 151 228 235 285 335 344 336 296 203 151 117
Mean daily daylight hours 9h 23m 10h 31m 11h 57m 13h 26m 14h 41m 15h 19m 14h 58m 13h 51m 12h 26m 10h 58m 9h 41m 9h 1m

Solar UV radiation in Ancaster, Ontario, Canada §

Ancaster experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 10, 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 Ancaster UV Index data.

Average daily maximum UV levels by month for Ancaster, 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 10 9 9 7 5 3 2