Chelmsford 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
Monthly Climate Data
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Fri 04 Sep, 2026 Weather in Chelmsford

Sunrise: 06:48 AM Sunset: 07:58 PM	Moonrise: 11:20 PM Moonset: 03:29 PM	Max: 21.4 °c	Min: 10.9 °c	Avg: 16.5 °c	Precip: 0.00 mm	Max Wind: 13.7 kph

	Fri 04 0:00 am	Fri 04 3:00 am	Fri 04 6:00 am	Fri 04 9:00 am	Fri 04 12:00 pm	Fri 04 3:00 pm	Fri 04 6:00 pm	Fri 04 9:00 pm
Icon
Temp	14.0°c	12.5°c	11.1°c	15.5°c	19.6°c	20.7°c	20.7°c	17.8°c
Wind	7.9 kmph	7.6 kmph	7.9 kmph	10.8 kmph	13.0 kmph	12.2 kmph	13.3 kmph	7.9 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%	2%	100%	1%	100%	100%	100%	100%
Humidity	87%	90%	97%	89%	74%	65%	64%	81%
Pressure	1014 mb	1014 mb	1015 mb	1016 mb	1015 mb	1014 mb	1014 mb	1015 mb

Chelmsford Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-7°C / 19°F	-16°C / 3°F	-11°C / 11°F	51 hours	52.03 mm / 2.05 In	11 days	1016 mb / 30 In
February	-6°C / 21°F	-15°C / 5°F	-10°C / 13°F	34 hours	53.44 mm / 2.10 In	9 days	1017 mb / 31 In
March	0°C / 32°F	-9°C / 16°F	-4°C / 24°F	74 hours	103.02 mm / 4.06 In	8 days	1018 mb / 31 In
April	7°C / 44°F	-2°C / 29°F	2°C / 36°F	101 hours	123.89 mm / 4.88 In	10 days	1015 mb / 30 In
May	17°C / 62°F	6°C / 42°F	11°C / 52°F	165 hours	84.51 mm / 3.33 In	7 days	1015 mb / 30 In
June	22°C / 71°F	11°C / 52°F	16°C / 61°F	156 hours	100.70 mm / 3.96 In	7 days	1012 mb / 30 In
July	25°C / 76°F	14°C / 57°F	19°C / 66°F	185 hours	100.07 mm / 3.94 In	8 days	1013 mb / 30 In
August	23°C / 74°F	13°C / 56°F	18°C / 64°F	179 hours	109.71 mm / 4.32 In	8 days	1014 mb / 30 In
September	19°C / 66°F	9°C / 49°F	14°C / 57°F	177 hours	98.46 mm / 3.88 In	7 days	1017 mb / 30 In
October	11°C / 51°F	4°C / 38°F	7°C / 45°F	120 hours	119.85 mm / 4.72 In	8 days	1015 mb / 30 In
November	3°C / 37°F	-3°C / 26°F	0°C / 32°F	92 hours	86.23 mm / 3.39 In	9 days	1016 mb / 30 In
December	-3°C / 26°F	-10°C / 14°F	-7°C / 20°F	65 hours	72.00 mm / 2.83 In	10 days	1017 mb / 30 In

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