Weather Sarnia tomorrow

PLACES IN THE AREA

7 °C	5 °C	9 am
6 °C	3 °C	12 pm
6 °C	2 °C	3 pm
5 °C	2 °C	9 pm

sunrise 6:25 am
sunset 8:28 pm

HOURLY

Weather forecast Sarnia April 29, 2026

During the day morning light rain showers, later morning overcast, in the evening cloudy. The highest temperature 7 °C. Total rainfall 1.1 mm. At night partly cloudy. The lowest temperature 3 °C.

Interactive map weather Ontario

GPS: 42.9787; -82.4041

altitude: 185 m
local time:

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Weather forecast Sarnia, Ontario extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Wednesday 04/29/2026
12 AM	overcast	10 °C 9 °C	0.0 mm	3.2 m/s 12 km/h west	1012 hPa	86 %	7 °C	96 %	0%	0%	96%	68%
1 AM	cloudy	10 °C 9 °C	0.0 mm	3.2 m/s 12 km/h west	1012 hPa	88 %	7 °C	64 %	0%	0%	10%	62%
2 AM	overcast	9 °C 8 °C	0.0 mm	3.5 m/s 13 km/h northwest	1012 hPa	89 %	7 °C	94 %	0%	0%	24%	93%
3 AM	partly cloudy	9 °C 8 °C	0.0 mm	2.5 m/s 9 km/h northwest	1013 hPa	90 %	7 °C	32 %	0%	1%	3%	28%
4 AM	cloudy	8 °C 7 °C	0.0 mm	1.8 m/s 6 km/h north	1012 hPa	92 %	7 °C	94 %	0%	0%	4%	94%
5 AM	rain	8 °C 7 °C	0.4 mm	2.9 m/s 10 km/h north	1012 hPa	92 %	7 °C	92 %	0%	4%	76%	78%
6 AM	rain	8 °C 6 °C	0.3 mm	5.5 m/s 20 km/h north	1012 hPa	94 %	6 °C	100 %	0%	1%	99%	78%
7 AM	overcast	7 °C 5 °C	0.0 mm	5.4 m/s 19 km/h north-northeast	1012 hPa	93 %	5 °C	96 %	0%	0%	88%	77%
8 AM	overcast	7 °C 5 °C	0.0 mm	5.9 m/s 21 km/h north-northeast	1012 hPa	92 %	5 °C	100 %	0%	0%	100%	0%
9 AM	overcast	7 °C 5 °C	0.0 mm	6.4 m/s 23 km/h north-northeast	1012 hPa	90 %	5 °C	100 %	0%	12%	100%	0%
10 AM	overcast	7 °C 5 °C	0.0 mm	6.5 m/s 23 km/h north	1012 hPa	87 %	5 °C	100 %	0%	2%	100%	0%
11 AM	overcast	7 °C 4 °C	0.0 mm	7.8 m/s 28 km/h north	1012 hPa	86 %	4 °C	100 %	0%	24%	100%	0%
12 PM	overcast	6 °C 3 °C	0.0 mm	9.0 m/s 32 km/h north	1012 hPa	83 %	3 °C	100 %	0%	33%	100%	0%
1 PM	overcast	6 °C 3 °C	0.0 mm	9.3 m/s 33 km/h north	1012 hPa	82 %	3 °C	95 %	0%	76%	82%	0%
2 PM	overcast	6 °C 3 °C	0.0 mm	9.2 m/s 33 km/h north	1012 hPa	77 %	2 °C	99 %	0%	75%	96%	0%
3 PM	overcast	6 °C 3 °C	0.0 mm	9.2 m/s 33 km/h north	1012 hPa	77 %	2 °C	99 %	0%	10%	99%	0%
4 PM	overcast	5 °C 2 °C	0.0 mm	8.4 m/s 30 km/h north	1012 hPa	79 %	2 °C	98 %	0%	26%	97%	0%
5 PM	overcast	5 °C 2 °C	0.0 mm	7.8 m/s 28 km/h north	1012 hPa	77 %	1 °C	98 %	0%	95%	60%	0%
6 PM	overcast	5 °C 2 °C	0.0 mm	6.7 m/s 24 km/h north	1012 hPa	76 %	1 °C	100 %	0%	100%	59%	0%
7 PM	overcast	5 °C 2 °C	0.0 mm	7.2 m/s 26 km/h north	1013 hPa	79 %	1 °C	100 %	0%	100%	97%	0%
8 PM	overcast	5 °C 2 °C	0.0 mm	6.9 m/s 25 km/h north	1013 hPa	80 %	1 °C	93 %	0%	89%	91%	0%
9 PM	overcast	5 °C 2 °C	0.0 mm	6.2 m/s 22 km/h north	1013 hPa	78 %	1 °C	100 %	0%	78%	100%	0%
10 PM	overcast	5 °C 2 °C	0.0 mm	5.6 m/s 20 km/h north	1014 hPa	78 %	1 °C	100 %	0%	14%	100%	0%
11 PM	overcast	5 °C 2 °C	0.0 mm	6.2 m/s 22 km/h north-northwest	1013 hPa	77 %	1 °C	97 %	0%	0%	97%	0%
Thursday 04/30/2026
12 AM	clear	5 °C 2 °C	0.0 mm	6.5 m/s 23 km/h north-northwest	1013 hPa	74 %	1 °C	7 %	0%	0%	7%	0%
1 AM	clear	5 °C 2 °C	0.0 mm	6.8 m/s 24 km/h north-northwest	1013 hPa	74 %	0 °C	0 %	0%	0%	0%	0%
2 AM	clear	5 °C 2 °C	0.0 mm	6.5 m/s 23 km/h north-northwest	1013 hPa	74 %	0 °C	1 %	0%	0%	1%	0%
3 AM	clear	4 °C 1 °C	0.0 mm	6.7 m/s 24 km/h north-northwest	1013 hPa	74 %	0 °C	4 %	0%	3%	3%	0%
4 AM	clear	4 °C 1 °C	0.0 mm	6.9 m/s 25 km/h north-northwest	1013 hPa	74 %	0 °C	7 %	0%	3%	7%	0%
5 AM	clear	4 °C 1 °C	0.0 mm	6.6 m/s 24 km/h north-northwest	1013 hPa	75 %	0 °C	1 %	0%	1%	1%	0%
6 AM	partly cloudy	3 °C 0 °C	0.0 mm	6.2 m/s 22 km/h north-northwest	1013 hPa	76 %	0 °C	20 %	0%	4%	16%	0%
7 AM	partly cloudy	3 °C 0 °C	0.0 mm	6.2 m/s 22 km/h north-northwest	1014 hPa	75 %	0 °C	26 %	0%	3%	24%	0%
8 AM	overcast	4 °C 1 °C	0.0 mm	6.3 m/s 23 km/h north-northwest	1014 hPa	70 %	-1 °C	98 %	0%	22%	97%	0%
9 AM	light rain	4 °C 1 °C	0.1 mm	6.4 m/s 23 km/h north-northwest	1014 hPa	71 %	0 °C	100 %	0%	21%	100%	0%
10 AM	rain	4 °C 1 °C	0.4 mm	5.6 m/s 20 km/h northwest	1015 hPa	77 %	0 °C	100 %	0%	100%	100%	0%
11 AM	light rain	4 °C 1 °C	0.2 mm	5.0 m/s 18 km/h northwest	1015 hPa	78 %	0 °C	100 %	0%	100%	100%	0%
12 PM	light rain showers	4 °C 1 °C	0.2 mm	3.8 m/s 14 km/h northwest	1015 hPa	73 %	0 °C	70 %	0%	60%	39%	0%
1 PM	light rain showers	6 °C 3 °C	0.2 mm	4.0 m/s 14 km/h northwest	1014 hPa	66 %	0 °C	65 %	0%	35%	55%	0%
2 PM	light rain showers	7 °C 4 °C	0.7 mm	5.4 m/s 19 km/h northwest	1014 hPa	58 %	0 °C	53 %	0%	19%	48%	0%
8 PM	clear	6 °C 4 °C	0.0 mm	1.8 m/s 6 km/h northeast	1014 hPa	77 %	1 °C	10 %	0%	8%	5%	0%

Sarnia, Ontario - information

State: Ontario

GPS coordinates: 42.9787; -82.4041

Time zone: America / Toronto time difference in hours with time in US is -6 hours

Population: 72 125
Altitude: 185 m
The administrative part:

Ontario, Toronto
, Sarnia

Something wrong, something missing?

Weather Sarnia, Ontario. Weather forecast Sarnia.

Sarnia - weather nearby - bigger cities

Camlachie, 13 km
Petrolia, 15 km
Lambton Shores, 27 km
Glencoe, Ontario, 38 km
Chatham, 41 km
Ridgetown, 46 km

South Huron, 50 km
Tecumseh, Ontario, 52 km
Bluewater, 53 km
Windsor, 56 km
London, 59 km
Amherstburg, Ontario, 68 km

Sarnia - weather nearby - the closest place

Bay Point, 0.7 km
Point Edward, 1.6 km
Lake Chipican, 1.8 km
Sarnia, 3.7 km
Stag Island, 7.3 km
Frog Point, 13 km

Blue Point, 15 km
Fawn Island, 20 km
Cedar Point, 20 km
Glen Rae, 22 km
Kettle Point, 24 km
Cape Ipperwash, 26 km

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Data source

Weather forecast for Sarnia is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Sarnia

data are always in the local time

Sun and light

April 29, 2026

Sunrise:	Sunset:
6:25 am	8:28 pm
Noon:	Length of day:
1:26 pm	14:02
Start of civil twilight*:	End of civil twilight*:
5:54 am	9 pm
Start of nautical twilight*:	End of nautical twilight*:
5:17 am	9:37 pm
Start of astronomical twilight*:	End of astronomical twilight*:
4:36 am	10:18 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
04/28/2026 5:41 pm	04/29/2026 5:12 am
Next new moon:	Next full moon:
05/16/2026	05/01/2026