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Weather in Orillia for September 2027

Your guide to Orillia weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Orillia at the beginning of September is 23 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 20.5 °C by the end of September.

    • Rain 🌧️

  • Orillia experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 142.9 mm.

    • More

  • Is September a good time to visit Orillia? check out the best time to travel to Orillia page.

  • ✨ Is September a good time to visit Orillia? – Ask the AI Weatherman

Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/12°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Orillia Weather September

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

Temperatures trend during September in Orillia

See the weather trend as well as the moving average line

September weather in Orillia day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 24° /12° 0 mm 5
2 Sept. Heavy rain
Heavy rain
 23° /13° 42.5 mm 5
3 Sept. Sunny
Sunny
 25° /15° 0.3 mm 7
4 Sept. Moderate rain
Moderate rain
 24° /14° 20.9 mm 6
5 Sept. Patchy rain possible
Patchy rain possible
 25° /14° 1.1 mm 6.9
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 22° /15° 6.3 mm 5
7 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /11° 8.5 mm 4
8 Sept. Overcast
Overcast
 20° /11° 0.3 mm 4
9 Sept. Light rain
Light rain
 22° /12° 3.5 mm 4
10 Sept. Mist
Mist
 22° /12° 0 mm 6
11 Sept. Light rain shower
Light rain shower
 23° /12° 0.7 mm 6
12 Sept. Heavy rain
Heavy rain
 23° /13° 6.8 mm 5
13 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 1 mm 5
14 Sept. Overcast
Overcast
 22° /11° 0 mm 6
15 Sept. Mist
Mist
 22° /12° 0.7 mm 5
16 Sept. Mist
Mist
 23° /12° 0 mm 5
17 Sept. Patchy rain possible
Patchy rain possible
 23° /11° 1 mm 5
18 Sept. Mist
Mist
 21° /11° 0 mm 4
19 Sept. Sunny
Sunny
 20° /9° 0 mm 5
20 Sept. Fog
Fog
 21° /9° 0 mm 5
21 Sept. Light rain
Light rain
 21° /10° 3.2 mm 4
22 Sept. Moderate rain
Moderate rain
 21° /11° 12.4 mm 5
23 Sept. Moderate rain
Moderate rain
 20° /13° 17.2 mm 5
24 Sept. Light rain
Light rain
 20° /13° 3.6 mm 5
25 Sept. Moderate rain
Moderate rain
 22° /12° 10.8 mm 5
26 Sept. Overcast
Overcast
 20° /12° 0.6 mm 4
27 Sept. Overcast
Overcast
 20° /11° 0.9 mm 4
28 Sept. Overcast
Overcast
 20° /11° 0.2 mm 4
29 Sept. Overcast
Overcast
 21° /12° 0 mm 4
30 Sept. Mist
Mist
 20° /13° 0.3 mm 4
Next
Important Notice
Our weather forecast for Orillia 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 Orillia forecast closer to your planned date for the most up-to-date weather information.
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Orillia in September - FAQ

What are the expected maximum and minimum temperatures in Orillia 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 Orillia during September?
Significant rainfall exceeding 142.9 mm is expected in Orillia during September, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.

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

September rainfall patterns in Orillia

Explore the daily rainfall trends and prepare for Orillias September weather 💧
Typically, Orillia has 6 rainy days in September with a total of 142.9 mm of rainfall.

UV exposure in Orillia 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 Orillia, located at latitude 44.609 and longitude -79.421. Stay updated with localized weather information tailored for Orillia.

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