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Canada weather

Weather in Orillia for December 2025

Your guide to Orillia weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Snow Squall Warning - See hour by hour.

    • Snow Forecast ❄️

  • Expect heavy snowfall in Orillia during December, with an average of 17 snowy days.
    According to Orillia snow forecast for December 2025, 2 snowy days are expected until the end of the month. The closest date with snow is Monday, 29 December.

    • Temperatures

  • Until now, December 2025 in Orillia has been significantly cooler than historical averages by -2 °C, with average temperature of -1.6 °C.

  • The forecast for the next days in Orillia predicts a temperature of -5.1 °C, which is cooler than the historical average.

  • In general, the average temperature in Orillia at the beginning of December is 0.1 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of -1.7 °C by the end of December.

    • More

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

Average dry days
7
Dry days
Average rainy days
7
Rainy days
Average snowy days
17
Snow days
Average temperatures
1°/-3°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
87 %
Avg humidity

Orillia Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate snow
0°
2
Light sleet
1°
3
Heavy snow
1°
4
Moderate snow
-0°
5
Mist
-0°
6
Patchy light snow
-1°
7
Heavy snow
-0°
8
Fog
-0°
9
Moderate or heavy snow showers
3°
10
Moderate snow
3°
11
Moderate or heavy snow showers
-2°
12
Light snow showers
0°
13
Moderate snow
-1°
14
Overcast
-2°
15
Partly cloudy
1°
16
Patchy rain possible
2°
17
Overcast
4°
18
Light snow showers
3°
19
Overcast
1°
20
Overcast
-0°
21
Partly cloudy
-2°
22
Overcast
-2°
23
Light rain
1°
24
Fog
1°
25
Mist
1°
26
Light rain
-1°
27
Moderate rain
-0°
28
Weather Alert Moderate or heavy snow showers
-2°
29
Weather Alert Moderate or heavy snow showers
1°
30
Cloudy
-8°
31
Heavy snow
-3°

Temperatures trend during December in Orillia

See the weather trend as well as the moving average line

December weather in Orillia day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
1 Dec. Moderate snow
Moderate snow
 0° /-4° 2 mm 1.5 cm
2 Dec. Light sleet
Light sleet
 1° /-3° 1.2 mm 0 cm
3 Dec. Heavy snow
Heavy snow
 1° /-3° 5.2 mm 4 cm
4 Dec. Moderate snow
Moderate snow
 0° /-5° 11.6 mm 5.9 cm
5 Dec. Mist
Mist
 0° /-8° 5.6 mm 2.9 cm
6 Dec. Patchy light snow
Patchy light snow
 -1° /-7° 3.2 mm 2.3 cm
7 Dec. Heavy snow
Heavy snow
 0° /-6° 8.7 mm 6.4 cm
8 Dec. Fog
Fog
 0° /-6° 5.4 mm 3.9 cm
9 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 3° /-3° 8.4 mm 4.6 cm
10 Dec. Moderate snow
Moderate snow
 3° /-2° 11 mm 7.8 cm
11 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -2° /-5° 0.2 mm 0.1 cm
12 Dec. Light snow showers
Light snow showers
 0° /-6° 8.4 mm 5.9 cm
13 Dec. Moderate snow
Moderate snow
 -1° /-6° 6.4 mm 4.4 cm
14 Dec. Overcast
Overcast
 -2° /-7° 1.7 mm 1.3 cm
15 Dec. Partly cloudy
Partly cloudy
 1° /-4° 4 mm 2.9 cm
16 Dec. Patchy rain possible
Patchy rain possible
 2° /-3° 3.4 mm 0 cm
17 Dec. Overcast
Overcast
 4° /0° 4.4 mm 0 cm
18 Dec. Light snow showers
Light snow showers
 3° /-2° 18.8 mm 4.7 cm
19 Dec. Overcast
Overcast
 1° /-7° 6.1 mm 0 cm
20 Dec. Overcast
Overcast
 0° /-5° 0 mm 0 cm
21 Dec. Partly cloudy
Partly cloudy
 -2° /-8° 2.4 mm 1.8 cm
22 Dec. Overcast
Overcast
 -2° /-9° 1.2 mm 0.9 cm
23 Dec. Light rain
Light rain
 1° /-3° 12.9 mm 7.8 cm
24 Dec. Fog
Fog
 1° /-3° 6.3 mm 4.5 cm
25 Dec. Mist
Mist
 1° /-5° 1.2 mm 0.8 cm
26 Dec. Light rain
Light rain
 -1° /-5° 6.2 mm 3.6 cm
27 Dec. Moderate rain
Moderate rain
 0° /-4° 8.8 mm 0 cm
28 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 -2° /-11° 22.6 mm 0 cm
29 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 1° /-11° 93.3 mm 1.7 cm
30 Dec. Cloudy
Cloudy
 -8° /-15° 0 mm 0 cm
31 Dec. Heavy snow
Heavy snow
 -3° /-14° 9.3 mm 5.5 cm
Next
Important Notice
Our weather forecast for Orillia in December 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 December - FAQ

What are the expected maximum and minimum temperatures in Orillia during December?
Brace for cold days with temperatures not exceeding 1° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Orillia during December?
Significant rainfall exceeding 177.7 mm is expected in Orillia during December, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Orillia in December 2025?
Orillia experiences an average snowfall of 75.3 cm during December, occurring over 17 days.
What are the typical wind conditions in Orillia during December?
The average wind speed in Orillia during December is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

Orillia snow forecast December 2025

Track daily snowfall levels and discover Orillia’s snowy potential this December ❄️
On average, Orillia sees 17 snowy days during December, with approximately 75.3 cm of total snowfall.

December rainfall patterns in Orillia

Explore the daily rainfall trends and prepare for Orillias December weather 💧
Typically, Orillia has 7 rainy days in December with a total of 177.7 mm of rainfall.

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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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