Cornwall August Weather Averages Ontario, Canada

August Weather Averages for Cornwall

High Temp	25°C	77°F
Low Temp	15°C	59°F
Avg Temp	20°C	68°F
Sunshine Hours	208 hours
Rainfall	121.22 mm	4.77 In
Rain days	9 days
Pressure	1014 mb	30 In

Cornwall August Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	23°C / 74°F	14°C / 57°F	18°C / 65°F	222 hours	126.87 mm / 4.99 In	11 days	1013 mb / 30 In
2009	24°C / 76°F	15°C / 59°F	20°C / 67°F	249 hours	82.58 mm / 3.25 In	11 days	1015 mb / 30 In
2010	25°C / 77°F	15°C / 59°F	20°C / 67°F	238 hours	129.34 mm / 5.09 In	11 days	1014 mb / 30 In
2011	24°C / 75°F	15°C / 58°F	19°C / 67°F	228 hours	200.37 mm / 7.89 In	11 days	1010 mb / 30 In
2012	25°C / 77°F	16°C / 60°F	20°C / 68°F	233 hours	80.72 mm / 3.18 In	8 days	1014 mb / 30 In
2013	24°C / 75°F	14°C / 57°F	19°C / 66°F	239 hours	88.44 mm / 3.48 In	8 days	1015 mb / 30 In
2014	24°C / 75°F	14°C / 57°F	19°C / 66°F	229 hours	112.56 mm / 4.43 In	5 days	1015 mb / 30 In
2015	25°C / 78°F	15°C / 60°F	20°C / 68°F	209 hours	78.57 mm / 3.09 In	7 days	1014 mb / 30 In
2016	26°C / 80°F	17°C / 62°F	22°C / 71°F	248 hours	134.08 mm / 5.28 In	7 days	1016 mb / 30 In
2017	24°C / 76°F	14°C / 58°F	19°C / 66°F	244 hours	109.09 mm / 4.29 In	10 days	1016 mb / 30 In
2018	27°C / 80°F	17°C / 63°F	22°C / 71°F	225 hours	99.86 mm / 3.93 In	12 days	1015 mb / 30 In
2019	25°C / 76°F	15°C / 58°F	19°C / 67°F	234 hours	72.25 mm / 2.84 In	11 days	1014 mb / 30 In
2020	24°C / 75°F	15°C / 59°F	19°C / 67°F	154 hours	145.50 mm / 5.73 In	13 days	1013 mb / 30 In
2021	28°C / 82°F	18°C / 64°F	23°C / 73°F	167 hours	72.94 mm / 2.87 In	7 days	1016 mb / 30 In
2022	26°C / 79°F	16°C / 60°F	20°C / 69°F	136 hours	135.40 mm / 5.33 In	12 days	1016 mb / 30 In
2023	23°C / 74°F	14°C / 56°F	18°C / 65°F	121 hours	227.70 mm / 8.96 In	10 days	1012 mb / 30 In
2024	23°C / 74°F	14°C / 58°F	19°C / 65°F	166 hours	170.16 mm / 6.70 In	5 days	1015 mb / 30 In

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