Cornwall Weather Conditions
Current Temperature Level
Cornwall Weather Conditions
Current Temperature Level
Feels Like 10°C
Chances of Rain15%
15°15%11 AM15°16%12 PM13°20%1 PM14°17%2 PM14°17%3 PM
16°19%4 PM16°23%5 PM16°18%6 PM16°17%7 PM16°16%8 PM16°10%9 PM
15°8%10 PM14°18%11 PM
14°15%12 AM14°12%1 AM
14°7%2 AM13°10%3 AM13°22%4 AM13°20%5 AM13°24%6 AM12°22%7 AM12°27%8 AM12°14%9 AM14°22%Skies may remain grey and overcast.
Last Updated: 2026-09-27 10:00 (Local Time)
59°ENE
Direction
24.5km/h
Wind Speed
Gust Speed
14.6m/s
Precipitation
Precipitation
0mm
Pressure
1016mb
UV Index
1.3Low
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Today
14
°C
66%Monday
14
°C78%Tuesday
13
°C86%Wednesday
14
°C92%Thursday
17
°C86%Friday
16
°C84%Saturday
12
°C56%Sunday
13
°C58%Monday
13
°C75%Tuesday
13
°C76%Overcast
Fully overcast skies with a high of 14 °C. Humidity will be 66%, and winds at 25.9 km/h.16°C / 13°C
Humi.66 %
Prec.0.23 mm
Sunrise
06:52 AM11hrs 55min
Sunset
06:47 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Overcast
14 °C
64 %
0
15.1 kmph / NE
Overcast
Feels 11 °C
Cover 100 %
Visibility 10 km
1 AM
Overcast
13 °C
67 %
0
13.7 kmph / NE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
2 AM
Overcast
13 °C
66 %
0
14.4 kmph / NE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
3 AM
Overcast
13 °C
67 %
0
14.8 kmph / NE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
4 AM
Overcast
13 °C
69 %
0
15.8 kmph / NE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
5 AM
Overcast
13 °C
69 %
0
15.8 kmph / NE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
6 AM
Overcast
13 °C
68 %
0
16.6 kmph / NE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
7 AM
Overcast
13 °C
67 %
0
17.6 kmph / NE
OvercastFeels 9 °C
Cover 94 %
Visibility 10 km
8 AM
Overcast
13 °C
68 %
0.2
19.1 kmph / ENE
OvercastFeels 9 °C
Cover 100 %
Visibility 10 km
9 AM
Overcast
14 °C
65 %
0.7
22 kmph / NE
OvercastFeels 9 °C
Cover 100 %
Visibility 10 km
10 AM
Overcast
15 °C
62 %
1.3
24.5 kmph / ENE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
11 AM
Overcast
15 °C
64 %
1.3
25.9 kmph / ENE
OvercastFeels 9 °C
Cover 100 %
Visibility 10 km
12 PM
Overcast
13 °C
73 %
2.9
24.1 kmph / ENE
OvercastFeels 9 °C
Cover 100 %
Visibility 10 km
1 PM
Overcast
14 °C
66 %
2.4
23.4 kmph / ENE
OvercastFeels 9 °C
Cover 100 %
Visibility 10 km
2 PM
Overcast
14 °C
67 %
1.4
22.7 kmph / ENE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
3 PM
Patchy rain nearby
16 °C
65 %
0.4
23 kmph / ENE
Patchy rain nearbyFeels 11 °C
Cover 100 %
Visibility 10 km
4 PM
Patchy rain nearby
16 °C
64 %
0.2
22.3 kmph / ENE
Patchy rain nearbyFeels 11 °C
Cover 100 %
Visibility 10 km
5 PM
Patchy rain nearby
16 °C
63 %
0.1
22.3 kmph / ENE
Patchy rain nearbyFeels 12 °C
Cover 100 %
Visibility 10 km
6 PM
Patchy rain nearby
16 °C
64 %
0
21.6 kmph / ENE
Patchy rain nearbyFeels 11 °C
Cover 100 %
Visibility 10 km
7 PM
Patchy rain nearby
16 °C
58 %
0
21.6 kmph / ENE
Patchy rain nearbyFeels 11 °C
Cover 100 %
Visibility 10 km
8 PM
Patchy rain nearby
16 °C
60 %
0
20.9 kmph / ENE
Patchy rain nearbyFeels 11 °C
Cover 64 %
Visibility 10 km
9 PM
Partly Cloudy
15 °C
63 %
0
23.4 kmph / ENE
Partly CloudyFeels 10 °C
Cover 47 %
Visibility 10 km
10 PM
Overcast
14 °C
68 %
0
20.9 kmph / ENE
OvercastFeels 10 °C
Cover 100 %
Visibility 10 km
11 PM
Cloudy
14 °C
72 %
0
21.6 kmph / ENE
CloudyFeels 9 °C
Cover 80 %
Visibility 10 km
27°16°28°16°
27°19°24°15°21°13°23°12°26°12°21°14°
23°13°24°13°21°9°24°7°
23°16°18°9°20°7°24°15°22°13°18°9°17°5°20°7°15°7°17°5°19°5°20°6°21°8°21°9°15°13°16°10°16°10°20°10°SeptemberWeather Overview
No. of days:
Sunny
14
Cloudy
0
Rainy
3
Snowy
0
The monthly weather averages in Cornwall consist of 14 sunny days, 0 cloudy days, 3 rainy days, and 0 snowy days.
Cornwall's Locations Weather Conditions
Canada's Hottest Cities - September 2026
1.
Mississauga, Ontario
16 °C
Overcast
52%
1.6
18 kmph / N
2.
St Catharines, Ontario
16 °C
Overcast
66%
0.6
24.8 kmph / NNE
3.
St. Catharines, Ontario
16 °C
Overcast
66%
0.6
24.8 kmph / NNE
4.
Saint Joseph de Sorel, Quebec
15 °C
Overcast
62%
0.6
27 kmph / NE
5.
Sorel Tracy, Quebec
15 °C
Overcast
62%
0.6
27 kmph / NE
6.
Saint Zephirin de Courval, Quebec
15 °C
Overcast
62%
0.6
27 kmph / NE
7.
Terrebonne, Quebec
15 °C
Overcast
61%
0.6
27 kmph / NE
8.
Sarnia, Ontario
15 °C
Sunny
64%
0.5
14 kmph / N
9.
Mont Royal, Quebec
15 °C
Overcast
58%
0.6
22.3 kmph / NE
10.
Dorval, Quebec
15 °C
Overcast
58%
0.6
22.3 kmph / NE
Last Updated: 27 Sept 2026, 02:24 PM
City Weather RankingsFAQs About Cornwall Weather Conditions
1. What is the current temperature in Cornwall today - 27 September 2026?
1. What is the current temperature in Cornwall today - 27 September 2026?
The current temperature in Cornwall is 15°C, with a feels-like temperature of 10°C. Today's forecast shows a high of 16°C and a low of 13°C, giving a 3 degree swing through the day as of 10:00 AM 27 September 2026.
2. What are the current weather parameters in Cornwall today?
2. What are the current weather parameters in Cornwall today?
Here is a complete overview of Cornwall's current weather conditions as of 10:00 AM 27 September 2026: Condition : Overcast Temperature : 15°C Cool (Feels like 10°C) Humidity : 62% Wind Speed : 24.5 km/h from ENE (59 degrees), Gust 14.6 m/s UV Index : 1.3 (Low Air Pressure : 1016 mb Cloud Cover : 100% Visibility : 10 km Precipitation : 0 mm (30% chance of rain)
3. What is the 10-day weather forecast for Cornwall from 10:00 AM 27 September 2026?
3. What is the 10-day weather forecast for Cornwall from 10:00 AM 27 September 2026?
From 10:00 AM 27 September 2026, Cornwall's 10-day forecast shows this trend: Today (Sep. 27) : Temp. 14°C, Hum. 66% and Overcast condition. Monday (Sep. 28) : Temp. 14°C, Hum. 78% and Overcast condition. Tuesday (Sep. 29) : Temp. 13°C, Hum. 86% and Overcast condition. Wednesday (Sep. 30) : Temp. 14°C, Hum. 92% and Mist condition. Thursday (Oct. 1) : Temp. 17°C, Hum. 86% and Overcast condition. Friday (Oct. 2) : Temp. 16°C, Hum. 84% and Overcast condition. Saturday (Oct. 3) : Temp. 12°C, Hum. 56% and Overcast condition. Sunday (Oct. 4) : Temp. 13°C, Hum. 58% and Overcast condition. Monday (Oct. 5) : Temp. 13°C, Hum. 75% and Rain condition. Tuesday (Oct. 6) : Temp. 13°C, Hum. 76% and Rain Showers condition.
4. Will it rain in Cornwall today?
4. Will it rain in Cornwall today?
As of 10:00 AM 27 September 2026, there is a 15% chance of rainfall in Cornwall later today around 2026-09-27 10:00. Current precipitation is 0 mm. Residents are advised to carry an umbrella before heading out.
5. What is the monthly weather forecast for Cornwall in September 2026?
5. What is the monthly weather forecast for Cornwall in September 2026?
September 2026 in Cornwall is forecast to have 14 sunny days, 3 rainy days, 0 cloudy days, and 0 snowy days. Temperatures for the month range from lows around 5°C to highs of 28°C.
6. How does the weather in Cornwall affect air quality?
6. How does the weather in Cornwall affect air quality?
Weather directly impacts air quality in Cornwall. Calm winds, high humidity, fog, and high pressure trap pollutants near the ground, worsening AQI. Strong winds, rainfall, and low pressure help disperse them. Rising temperatures and UV levels intensify ozone and smog formation, while poor visibility signals elevated particulate matter. Monitoring weather alongside AQI gives the clearest picture of outdoor safety.
