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Sarnia in September average weather

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Temperatures trend during September in Sarnia

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September weather day by day

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August October

Date	Weather	Temperatures	Rain	UV
1 Sept.	Sunny	23° /13°	0 mm	6
2 Sept.	Overcast	22° /12°	0 mm	6
3 Sept.	Cloudy	28° /14°	0 mm	7
4 Sept.	Partly cloudy	29° /15°	0 mm	8
5 Sept.	Mist	30° /17°	0 mm	7
6 Sept.	Patchy rain possible	26° /16°	6.9 mm	6
7 Sept.	Light rain shower	20° /13°	4.4 mm	5
8 Sept.	Patchy rain possible	20° /10°	0.1 mm	5
9 Sept.	Cloudy	22° /13°	0 mm	6
10 Sept.	Overcast	23° /14°	0 mm	6
11 Sept.	Fog	25° /14°	0.4 mm	6
12 Sept.	Torrential rain shower	24° /15°	13.7 mm	6
13 Sept.	Overcast	22° /13°	0 mm	6
14 Sept.	Partly cloudy	23° /14°	0 mm	6
15 Sept.	Mist	25° /13°	0 mm	6
16 Sept.	Mist	25° /12°	0 mm	6
17 Sept.	Patchy rain possible	23° /13°	0.4 mm	5
18 Sept.	Light rain shower	20° /13°	0.6 mm	5
19 Sept.	Fog	20° /11°	0 mm	5
20 Sept.	Patchy rain possible	24° /13°	0 mm	5
21 Sept.	Mist	25° /16°	0 mm	6
22 Sept.	Fog	25° /15°	2.6 mm	6
23 Sept.	Fog	20° /13°	9.5 mm	5
24 Sept.	Overcast	21° /14°	0 mm	5
25 Sept.	Partly cloudy	22° /14°	0 mm	6
26 Sept.	Patchy rain possible	23° /14°	0.3 mm	6
27 Sept.	Overcast	20° /13°	0 mm	5
28 Sept.	Light rain shower	19° /15°	1.4 mm	4
29 Sept.	Patchy rain possible	21° /15°	0.2 mm	5
30 Sept.	Overcast	22° /15°	0 mm	5
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Important Notice

Our weather forecast for Sarnia in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Sarnia forecast closer to your planned date for the most up-to-date weather information.

Sarnia in September - FAQ

What are the expected maximum and minimum temperatures in Sarnia during September?

Enjoy moderate daytime temperatures of up to 23° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Sarnia during September?

In September, Sarnia can expect light to moderate rainfall, totaling 42.2 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in Sarnia during September?

The average wind speed in Sarnia during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Sarnia

Explore the daily rainfall trends and prepare for Sarnias September weather 💧

UV exposure in Sarnia during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Sarnia, located at latitude 42.979 and longitude -82.404. Stay updated with localized weather information tailored for Sarnia.

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Mon.	Tue.	Wed.	Thu.	Fri.	Sat.	Sun.
1 23°	2 22°	3 28°	4 29°	5 30°	6 26°	7 20°
8 20°	9 22°	10 23°	11 25°	12 24°	13 22°	14 23°
15 25°	16 25°	17 23°	18 20°	19 20°	20 24°	21 25°
22 25°	23 20°	24 21°	25 22°	26 23°	27 20°	28 19°
29 21°	30 22°