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Canada weather

Weather in Barrie for September 2026

Your guide to Barrie weather in September - trends and predictions

    Temperatures

  • So far, September 2026 in Barrie is slightly warmer than the historical average by 0.7 °C.

  • Expect cooler weather in the next days in Barrie with the forecast suggesting a temperature of 19.7 °C, lower than the historical average.

  • In general, the average temperature in Barrie at the beginning of September is 23.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.1 °C by the end of September.

    • Rain 🌧️

  • The climate of Barrie in September is notably wet, with an average of 11 rainy days, and a total of 115.1 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/12°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Barrie Weather September

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

Temperatures trend during September in Barrie

See the weather trend as well as the moving average line

September weather in Barrie day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 25° /13° 0.1 mm 6
2 Sept. Patchy rain possible
Patchy rain possible
 23° /12° 48.5 mm 4
3 Sept. Sunny
Sunny
 26° /14° 0.6 mm 7
4 Sept. Sunny
Sunny
 25° /14° 19.3 mm 6
5 Sept. Sunny
Sunny
 26° /13° 0.2 mm 7
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 22° /14° 6.4 mm 5
7 Sept. Light rain shower
Light rain shower
 19° /11° 8.2 mm 4
8 Sept. Overcast
Overcast
 20° /9° 0.2 mm 4
9 Sept. Cloudy
Cloudy
 22° /11° 3.7 mm 4
10 Sept. Overcast
Overcast
 22° /12° 0 mm 5
11 Sept. Sunny
Sunny
 22° /10° 0 mm 5.9
12 Sept. Overcast
Overcast
 25° /12° 0 mm 5.5
13 Sept. Mist
Mist
 21° /14° 1.3 mm 5.3
14 Sept. Sunny
Sunny
 18° /9° 0 mm 5.4
15 Sept. Patchy rain possible
Patchy rain possible
 16° /12° 4.8 mm 4
16 Sept. Fog
Fog
 19° /15° 26.9 mm 4
17 Sept. Overcast
Overcast
 18° /13° 0 mm 4
18 Sept. Sunny
Sunny
 17° /11° 0 mm 5
19 Sept. Sunny
Sunny
 19° /9° 0 mm 5
20 Sept. Sunny
Sunny
 21° /12° 0.1 mm 6
21 Sept. Sunny
Sunny
 21° /12° 0 mm 6
22 Sept. Sunny
Sunny
 21° /13° 0 mm 6
23 Sept. Sunny
Sunny
 18° /11° 0 mm 5
24 Sept. Sunny
Sunny
 20° /13° 0 mm 5
25 Sept. Overcast
Overcast
 22° /14° 9.1 mm 5
26 Sept. Cloudy
Cloudy
 19° /13° 0 mm 5
27 Sept. Overcast
Overcast
 19° /12° 0 mm 5
28 Sept. Overcast
Overcast
 19° /11° 0 mm 4
29 Sept. Cloudy
Cloudy
 22° /12° 0 mm 5
30 Sept. Mist
Mist
 20° /11° 0 mm 5
Next
Important Notice
Our weather forecast for Barrie 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 Barrie forecast closer to your planned date for the most up-to-date weather information.
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Barrie in September - FAQ

What are the expected maximum and minimum temperatures in Barrie during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Barrie during September?
Significant rainfall exceeding 115.1 mm is expected in Barrie during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Barrie during September?
The average wind speed in Barrie during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Barrie

Explore the daily rainfall trends and prepare for Barries September weather 💧
Typically, Barrie has 11 rainy days in September with a total of 115.1 mm of rainfall.

UV exposure in Barrie during September

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

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Location coordinates Where is Barrie?

Get accurate weather forecasts for Barrie, located at latitude 44.4 and longitude -79.666. Stay updated with localized weather information tailored for Barrie.

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