Annual mean 7°C · wettest around December · prevailing wind SW
Warmest
24.4 °C
Coldest
-6.1 °C
Wettest
32%
Windiest
5.0 m/s
Prevailing
SW
4.1 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Orillia over the whole year is 7°C. July is the hottest month, with highs of about 24°C; January is the coldest, with lows of about -8°C. Orillia has no sharply defined rainy season: the chance of rain on a given day runs from 18% in July, the driest month, to 32% in December, the wettest. Winds in Orillia are highest in March, averaging 3.7 m/s (13 km/h), and lightest in August, at 2.6 m/s (9 km/h). The prevailing wind is from the SW. The clearest skies in Orillia come in July, when the sky is typically 35% covered; December is the cloudiest month, at 65%.
Month by month Orillia climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-5°C
-8°C
-11°C
27%
62%
3.4 m/s
0
0
0
February
-4°C
-8°C
-10°C
27%
59%
3.6 m/s
0
0
1
March
1°C
-4°C
-5°C
24%
49%
3.7 m/s
0
0
6
April
7°C
1°C
2°C
28%
47%
3.7 m/s
5
0
26
May
16°C
9°C
12°C
21%
40%
3.2 m/s
35
6
65
June
21°C
15°C
19°C
21%
38%
3.1 m/s
68
18
65
July
24°C
17°C
23°C
18%
35%
2.7 m/s
78
41
45
August
23°C
16°C
22°C
19%
36%
2.6 m/s
78
36
50
September
20°C
12°C
18°C
18%
37%
2.6 m/s
60
14
71
October
12°C
7°C
9°C
26%
50%
3.0 m/s
24
2
52
November
4°C
0°C
-1°C
30%
57%
3.4 m/s
3
0
14
December
-2°C
-4°C
-7°C
32%
65%
3.4 m/s
0
0
2
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Orillia weather by season
Year round, Orillia has days of about -5°C at their warmest in January, its coolest month, and 24°C in July, its warmest; the coolest hours of the day run from -8°C to 17°C through the year, and the average temperature over the year is 7°C around the clock. Rain is most likely around December and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Orillia weather in winterDecember to February
High -4°CLow -7°CRain 29%
Winter in Orillia has typical daily highs of about -4°C and lows of about -7°C, with a 29% chance of rain on a given day.
Orillia weather in springMarch to May
High 8°CLow 2°CRain 24%
Spring in Orillia has typical daily highs of about 8°C and lows of about 2°C, with a 24% chance of rain on a given day.
Orillia weather in summerJune to August
High 23°CLow 16°CRain 19%
Summer in Orillia has typical daily highs of about 23°C and lows of about 16°C, with a 19% chance of rain on a given day.
Orillia weather in autumnSeptember to November
High 12°CLow 6°CRain 25%
Autumn in Orillia has typical daily highs of about 12°C and lows of about 6°C, with a 25% chance of rain on a given day.
When is the rainy season in Orillia?
Orillia has no sharply defined rainy season: the chance of rain on a given day runs from 18% in July, the driest month, to 32% in December, the wettest.
What time of year is Orillia windiest?
Winds in Orillia are highest in March, averaging 3.7 m/s (13 km/h), and lightest in August, at 2.6 m/s (9 km/h). The prevailing wind is from the SW.
What is the average temperature in Orillia year round?
The average temperature in Orillia over the whole year is 7°C. July is the hottest month, with highs of about 24°C; January is the coldest, with lows of about -8°C.