Cornwall, Ontario, Canada Climate

Weather: 16.04°C/60.87°F, Wind SW at 9.77 km/h, 29% Humidity, 0% Chance of rain

Canada
(Photo by Benjamin Elliott on Unsplash)
Contents

Cornwall Climate Summary

Located at an elevation of 58.87 meters (193.14 feet) above sea level, Cornwall has a Humid continental, no dry season, warm summer climate (Classification: Dfb). The district’s yearly temperature is 8.02ºC (46.44ºF) and it is 5.93% higher than Canada’s averages. Cornwall typically receives about 37.72 millimeters (1.49 inches) of precipitation and has 49.74 rainy days (13.63% of the time) annually.

CountryCanada
CityOntario
Longitude-74.730345
Latitude45.0212762
Attitude/Elevation58.87m (193.14ft)
Local timeWednesday 15:21
Annual high temperature10.92ºC (51.66ºF)
Annual low temperature2.46ºC (36.43ºF)
Average annual precip.37.72mm (1.49in)
Warmest monthJuly (27.24ºC / 81.03ºF)
Coldest MonthJanuary (-12.58ºC / 9.36ºF)
Wettest MonthOctober (48.99mm / 1.93in)
Driest MonthDecember (28.05mm / 1.1in)
Number of days with rainfall (≥ 1.0 mm)49.74 days (13.63%)
Days with no rain315.26 days (86.37%)
Humidity79.09%

Climate Cornwall: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)13.0(55.4)14.0(57.2)18.0(64.4)20.0(68.0)30.0(86.0)30.0(86.0)34.0(93.2)32.0(89.6)32.0(89.6)25.0(77.0)20.0(68.0)11.0(51.8)34.0(93.2)
Average high °C (°F)-5.24(22.57)-2.52(27.46)2.22(36.0)8.67(47.61)17.68(63.82)22.37(72.27)27.24(81.03)24.97(76.95)20.53(68.95)12.27(54.09)3.51(38.32)-0.71(30.72)10.92(51.66)
Daily mean °C (°F)-7.62(18.28)-5.25(22.55)-0.27(31.51)5.64(42.15)14.23(57.61)19.2(66.56)23.87(74.97)21.48(70.66)16.98(62.56)9.19(48.54)1.3(34.34)-2.56(27.39)8.02(46.44)
Average low °C (°F)-12.58(9.36)-10.45(13.19)-4.98(23.04)0.33(32.59)7.41(45.34)12.12(53.82)16.82(62.28)15.0(59.0)10.73(51.31)4.35(39.83)-2.83(26.91)-6.4(20.48)2.46(36.43)
Record low °C (°F)-27.0(-16.6)-26.0(-14.8)-18.0(-0.4)-9.0(15.8)-3.0(26.6)4.0(39.2)10.0(50.0)8.0(46.4)1.0(33.8)-4.0(24.8)-18.0(-0.4)-19.0(-2.2)-27.0(-16.6)
Average precipitation mm (inches)47.65(1.88)34.37(1.35)39.09(1.54)43.75(1.72)33.08(1.3)36.28(1.43)39.75(1.56)32.35(1.27)30.1(1.19)48.99(1.93)39.21(1.54)28.05(1.1)37.72(1.49)
Average precipitation days (≥ 1.0 mm)4.643.914.644.554.094.644.364.272.824.183.913.734.15
Average relative humidity (%)86.3385.8681.3472.9973.9577.9475.978.8576.7877.7482.6178.8279.09
Mean monthly sunshine hours5.217.157.989.212.412.8213.5111.7510.197.95.345.589.09

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Cornwall in recent years.

Cornwall

Cornwall Temperature by Month

July
23.87°C | 74.97°F
August
21.48°C | 70.66°F
June
19.2°C | 66.56°F
September
16.98°C | 62.56°F
May
14.23°C | 57.61°F
October
9.19°C | 48.54°F
April
5.64°C | 42.15°F
November
1.3°C | 34.34°F
March
-0.27°C | 31.51°F
December
-2.56°C | 27.39°F
February
-5.25°C | 22.55°F
January
-7.62°C | 18.28°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature11.0°C (51.8°F)1.03°C (33.85°F)-10.0°C (14.0°F)
Avg Temperature9.0°C (48.2°F)-1.87°C (28.63°F)-13.0°C (8.6°F)
Min Temperature4.0°C (39.2°F)-7.16°C (19.11°F)-18.0°C (-0.4°F)
Dew PointMaxAverageMin
Dew Point5.0°C (41.0°F)-5.42°C (22.24°F)-16.0°C (3.2°F)
PrecipitationMaxAverageMinSum
Precipitation26.3mm | 1.04in4.31mm | 0.17in0.0mm | 0in133.5mm | 5.26in
Snowdepth8.4mm | 0.33in1.05mm | 0.04in0.0mm | 0in32.5mm | 1.28in
WindMaxAverageMin
Wind26.0kmh | 16.16mph13.9kmh | 8.64mph6.0kmh | 3.73mph
Gust Wind42.0kmh | 26.1mph22.0kmh | 13.67mph8.0kmh | 4.97mph
Sea Level PressureMaxAverageMin
Sea Level Pressure26.3mb4.31mb0.0mb
Cornwall

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
March° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2019-03-01-7 | 19.4-12 | 10.48011 | 6.8430.33 | 10270.0 | 0.0
2019-03-02-5 | 23.0-7 | 19.49212 | 7.4630.12 | 10201.5 | 0.06
2019-03-03-5 | 23.0-7 | 19.49014 | 8.730.06 | 10180.9 | 0.04
2019-03-04-7 | 19.4-10 | 14.08512 | 7.4629.88 | 10121.2 | 0.05
2019-03-05-10 | 14.0-14 | 6.88313 | 8.0829.94 | 10141.3 | 0.05
2019-03-06-13 | 8.6-16 | 3.28215 | 9.3230.06 | 10180.5 | 0.02
2019-03-07-11 | 12.2-15 | 5.08310 | 6.2130.21 | 10230.2 | 0.01
2019-03-08-7 | 19.4-11 | 12.28318 | 11.1830.24 | 10240.0 | 0.0
2019-03-09-5 | 23.0-8 | 17.68611 | 6.8430.33 | 10270.0 | 0.0
2019-03-101 | 33.8-2 | 28.49117 | 10.5629.94 | 101426.3 | 1.04
2019-03-111 | 33.8-1 | 30.28426 | 16.1629.85 | 10116.7 | 0.26
2019-03-12-5 | 23.0-7 | 19.48614 | 8.730.21 | 10230.6 | 0.02
2019-03-13-0 | 32.0-3 | 26.69010 | 6.2130.27 | 10255.7 | 0.22
2019-03-143 | 37.41 | 33.8939 | 5.5930.03 | 10170.1 | 0.0
2019-03-159 | 48.25 | 41.08124 | 14.9129.65 | 10044.0 | 0.16
2019-03-16-2 | 28.4-5 | 23.07424 | 14.9129.85 | 10111.6 | 0.06
2019-03-17-5 | 23.0-9 | 15.87816 | 9.9430.15 | 10210.4 | 0.02
2019-03-18-5 | 23.0-10 | 14.0788 | 4.9730.27 | 10250.0 | 0.0
2019-03-19-3 | 26.6-9 | 15.8756 | 3.7330.39 | 10290.0 | 0.0
2019-03-203 | 37.4-3 | 26.67810 | 6.2130.24 | 10240.0 | 0.0
2019-03-216 | 42.81 | 33.88010 | 6.2129.97 | 10152.9 | 0.11
2019-03-222 | 35.61 | 33.89211 | 6.8429.53 | 100023.6 | 0.93
2019-03-23-4 | 24.8-6 | 21.28223 | 14.2929.85 | 101112.0 | 0.47
2019-03-241 | 33.8-3 | 26.68518 | 11.1830.03 | 10172.1 | 0.08
2019-03-25-3 | 26.6-8 | 17.67414 | 8.730.15 | 10211.0 | 0.04
2019-03-26-4 | 24.8-8 | 17.67811 | 6.8430.36 | 10280.0 | 0.0
2019-03-271 | 33.8-5 | 23.07510 | 6.2130.42 | 10300.0 | 0.0
2019-03-286 | 42.80 | 32.07220 | 12.4330.09 | 10194.3 | 0.17
2019-03-294 | 39.21 | 33.88511 | 6.8430.06 | 10185.9 | 0.23
2019-03-305 | 41.03 | 37.4939 | 5.5929.88 | 101217.7 | 0.7
2019-03-311 | 33.8-1 | 30.28914 | 8.729.71 | 100613.0 | 0.51

Cornwall 3 Year Historical Weather Data

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