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Sarnia Weather in October
October in Sarnia brings moderate temperatures, with highs of 16°C (61°F) and nights dropping to 8°C (46°F). Rainfall is on the higher side this month, averaging around 88 mm (3.5 in), so keep a rain jacket handy.
Rainfall in Sarnia in October
Historically, approximately 11 days this month are expected to have rain, averaging 88 mm (3.5 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Sarnia in October
October in Sarnia brings moderate temperatures, with highs of 16°C (61°F) and nights around 8°C (46°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows around 8°C (46°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Sarnia.
Sarnia Temperature in October
Min Temperature
8°C (46°F)
Max Temperature
16°C (61°F)
Chance of Rain
35%
Precipitation
88 mm (3.5 in)
Rainy days
11 days
Sarnia Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sarnia - and find the best time to visit.
Best Places in Canada in October
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Sarnia in October
The weather can swing between comfortable and chilly in October, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags.
What To Do in Sarnia in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Barbeque5/10 -
Camping4/10 -
Outdoor sports9/10
Sarnia 3-Day Forecast
More climate data for Sarnia
See the full Sarnia climate overview or explore weather in Canada.
Popular in October
Where to go in October - average daytime high across popular destinations.
Toronto
16°C (61°F) Niagara Falls15°C (59°F) Montréal14°C (57°F) Ottawa14°C (57°F) Vancouver
14°C (57°F) Quebec City12°C (54°F) Calgary
12°C (54°F) Whistler7°C (45°F) Bucket list
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