Sarnia Weather History Ontario, Canada

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Past date: Past date must be from 1st Jan, 2009 onwards.

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Daily and hourly data from 1 Jan 2009 onwards.
Yearly Monthly Averages
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Wed 16 Jul, 2025 Weather in Sarnia

Sunrise: 06:05 AM Sunset: 09:06 PM	Moonrise: No moonrise Moonset: 12:28 PM	Max: 28.9 °c	Min: 18.4 °c	Avg: 23.2 °c	Precip: 0.00 mm	Max Wind: 14.0 kph

	Wed 16 0:00 am	Wed 16 3:00 am	Wed 16 6:00 am	Wed 16 9:00 am	Wed 16 12:00 pm	Wed 16 3:00 pm	Wed 16 6:00 pm	Wed 16 9:00 pm
Icon
Temp	19.9°c	18.6°c	19.6°c	21.9°c	25.1°c	28.1°c	27.8°c	24.6°c
Wind	13.0 kmph	11.5 kmph	9.7 kmph	7.2 kmph	9.0 kmph	11.9 kmph	14.0 kmph	13.3 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	0%	1%	9%	45%	54%	17%	0%	29%
Humidity	92%	91%	86%	86%	85%	76%	75%	88%
Pressure	1015 mb	1014 mb	1013 mb	1013 mb	1012 mb	1010 mb	1009 mb	1009 mb

Sarnia Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-2°C / 29°F	-7°C / 20°F	-4°C / 24°F	70 hours	67.92 mm / 2.67 In	11 days	1018 mb / 31 In
February	-1°C / 31°F	-7°C / 20°F	-4°C / 25°F	78 hours	73.59 mm / 2.90 In	9 days	1018 mb / 31 In
March	5°C / 41°F	-2°C / 28°F	1°C / 34°F	113 hours	91.56 mm / 3.60 In	8 days	1018 mb / 31 In
April	11°C / 51°F	3°C / 37°F	7°C / 44°F	130 hours	117.64 mm / 4.63 In	9 days	1015 mb / 30 In
May	18°C / 64°F	9°C / 48°F	13°C / 56°F	177 hours	106.68 mm / 4.20 In	8 days	1016 mb / 30 In
June	23°C / 73°F	14°C / 58°F	18°C / 65°F	197 hours	112.33 mm / 4.42 In	8 days	1013 mb / 30 In
July	26°C / 78°F	17°C / 63°F	22°C / 71°F	230 hours	91.56 mm / 3.60 In	8 days	1014 mb / 30 In
August	25°C / 77°F	17°C / 63°F	21°C / 70°F	223 hours	89.42 mm / 3.52 In	7 days	1015 mb / 30 In
September	22°C / 72°F	14°C / 57°F	18°C / 64°F	206 hours	78.45 mm / 3.09 In	7 days	1017 mb / 31 In
October	15°C / 59°F	8°C / 47°F	11°C / 53°F	148 hours	105.25 mm / 4.14 In	8 days	1016 mb / 30 In
November	8°C / 46°F	2°C / 35°F	5°C / 41°F	137 hours	76.49 mm / 3.01 In	8 days	1019 mb / 31 In
December	2°C / 36°F	-2°C / 28°F	0°C / 32°F	79 hours	75.52 mm / 2.97 In	11 days	1018 mb / 31 In

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