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Weather in Sarnia for September 2024

Your guide to Sarnia weather in September - trends and predictions

  • Until now, September 2024 in Sarnia has been nearly identical to the historical average, with a temperature of 23.9 °C (showing only a slight deviation of -0.2 °C).

  • The forecast for the upcoming days in Sarnia predicts a temperature of 25.3 °C, which is slightly above the historical average.

  • In general, the average temperature in Sarnia at the beginning of September is 25.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 23.6 °C by the end of September.

  • Sarnia sees moderate rainfall in September, averaging 9 rainy days.

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Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/13°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Sarnia in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
23°
2
Overcast
22°
3
Cloudy
28°
4
Partly cloudy
29°
5
Mist
30°
6
Patchy rain possible
26°
7
Light rain shower
20°
8
Patchy rain possible
20°
9
Cloudy
22°
10
Overcast
23°
11
Fog
25°
12
Torrential rain shower
24°
13
Overcast
22°
14
Partly cloudy
23°
15
Mist
25°
16
Mist
25°
17
Sunny
28°
18
Partly cloudy
25°
19
Fog
23°
20
Cloudy
28°
21
Sunny
30°
22
Patchy rain possible
26°
23
Patchy rain possible
29°
24
Patchy rain possible
24°
25
Partly cloudy
26°
26
Moderate rain
18°
27
Partly cloudy
22°
28
Sunny
26°
29
Sunny
24°
30
Patchy rain possible
25°
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Temperatures trend during September in Sarnia

See the weather trend as well as the moving average line

September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 23° /13° 0 mm 6
2 Sept. Overcast
Overcast
 22° /12° 0 mm 6
3 Sept. Cloudy
Cloudy
 28° /14° 0 mm 7
4 Sept. Partly cloudy
Partly cloudy
 29° /15° 0 mm 8
5 Sept. Mist
Mist
 30° /17° 0 mm 7
6 Sept. Patchy rain possible
Patchy rain possible
 26° /16° 6.9 mm 6
7 Sept. Light rain shower
Light rain shower
 20° /13° 4.4 mm 5
8 Sept. Patchy rain possible
Patchy rain possible
 20° /10° 0.1 mm 5
9 Sept. Cloudy
Cloudy
 22° /13° 0 mm 6
10 Sept. Overcast
Overcast
 23° /14° 0 mm 6
11 Sept. Fog
Fog
 25° /14° 0.4 mm 6
12 Sept. Torrential rain shower
Torrential rain shower
 24° /15° 13.7 mm 6
13 Sept. Overcast
Overcast
 22° /13° 0 mm 6
14 Sept. Partly cloudy
Partly cloudy
 23° /14° 0 mm 6
15 Sept. Mist
Mist
 25° /13° 0 mm 6
16 Sept. Mist
Mist
 25° /12° 0 mm 6
17 Sept. Sunny
Sunny
 28° /13° 0 mm 5
18 Sept. Partly cloudy
Partly cloudy
 25° /15° 0 mm 4
19 Sept. Fog
Fog
 23° /12° 0 mm 5
20 Sept. Cloudy
Cloudy
 28° /14° 0 mm 4
21 Sept. Sunny
Sunny
 30° /17° 0 mm 1
22 Sept. Patchy rain possible
Patchy rain possible
 26° /18° 0.8 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 29° /18° 3.3 mm 5
24 Sept. Patchy rain possible
Patchy rain possible
 24° /17° 0.8 mm 5
25 Sept. Partly cloudy
Partly cloudy
 26° /19° 0 mm 6
26 Sept. Moderate rain
Moderate rain
 18° /15° 7.5 mm 4
27 Sept. Partly cloudy
Partly cloudy
 22° /14° 0.1 mm 5
28 Sept. Sunny
Sunny
 26° /15° 0 mm 5
29 Sept. Sunny
Sunny
 24° /18° 0 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 25° /19° 0.7 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.

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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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