What is the weather in Cornwall right now?

Current weather in Cornwall is few clouds.

Where can I find the hourly weather forecast for Cornwall?

This page shows hourly weather forecast for Cornwall, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Cornwall updated regularly?

Weather data for Cornwall is updated regularly with the latest available observations and forecasts.

Now · 12:08 PM

Cornwall Weather & Hourly Forecast

Canada · Ontario

14°C

Mostly sunny

Feels like: 10°C

💧 Humidity 60% 🌡 Pressure 1031 hPa 💨 Wind 14 km/h 👁 Visibility 51.2 km ☁ Clouds 16% ☀️ UV index 4.3 · Moderate 🌅 Sunrise 6:44 AM 🌇 Sunset 6:58 PM

Hourly Forecast for Cornwall

Today

1:00 PM

Sunny

14° 💧 None 💨 14 km/h H 61%1031 hPa

4:00 PM

Mostly sunny

16° 💧 None 💨 15 km/h H 52%1030 hPa

7:00 PM

Clear night

13° 💧 None 💨 12 km/h H 70%1031 hPa

10:00 PM

Clear night

11° 💧 None 💨 10 km/h H 81%1033 hPa

Tomorrow

1:00 AM

Clear night

9° 💧 None 💨 7 km/h H 89%1034 hPa

4:00 AM

Clear night

9° 💧 None 💨 7 km/h H 92%1034 hPa

7:00 AM

Sunny

8° 💧 None 💨 9 km/h H 96%1036 hPa

10:00 AM

Sunny

12° 💧 None 💨 12 km/h H 80%1037 hPa

1:00 PM

Sunny

17° 💧 None 💨 15 km/h H 59%1036 hPa

4:00 PM

Sunny

17° 💧 None 💨 16 km/h H 53%1034 hPa

7:00 PM

Clear night

14° 💧 None 💨 12 km/h H 67%1034 hPa

10:00 PM

Clear night

11° 💧 None 💨 9 km/h H 79%1035 hPa

Thursday

1:00 AM

Clear night

10° 💧 None 💨 6 km/h H 89%1034 hPa

4:00 AM

Clear night

9° 💧 None 💨 7 km/h H 93%1034 hPa

7:00 AM

Mostly sunny

8° 💧 None 💨 5 km/h H 97%1034 hPa

10:00 AM

Sunny

13° 💧 None 💨 6 km/h H 79%1034 hPa

Today

1:00 PM

Sunny

14° 💧 None 💨 14 km/h H 61%1031 hPa

2:00 PM

Mostly sunny

15° 💧 None 💨 15 km/h H 58%1031 hPa

3:00 PM

Partly cloudy

16° 💧 None 💨 15 km/h H 54%1030 hPa

4:00 PM

Mostly sunny

16° 💧 None 💨 15 km/h H 52%1030 hPa

5:00 PM

Sunny

16° 💧 None 💨 14 km/h H 54%1030 hPa

6:00 PM

Sunny

15° 💧 None 💨 12 km/h H 62%1031 hPa

7:00 PM

Clear night

13° 💧 None 💨 12 km/h H 70%1031 hPa

8:00 PM

Clear night

12° 💧 None 💨 12 km/h H 74%1031 hPa

9:00 PM

Clear night

11° 💧 None 💨 11 km/h H 78%1032 hPa

10:00 PM

Clear night

11° 💧 None 💨 10 km/h H 81%1033 hPa

11:00 PM

Clear night

10° 💧 None 💨 9 km/h H 85%1033 hPa

Tomorrow

12:00 AM

Clear night

10° 💧 None 💨 8 km/h H 88%1033 hPa

1:00 AM

Clear night

9° 💧 None 💨 7 km/h H 89%1034 hPa

2:00 AM

Clear night

9° 💧 None 💨 7 km/h H 90%1034 hPa

3:00 AM

Clear night

9° 💧 None 💨 7 km/h H 91%1034 hPa

4:00 AM

Clear night

9° 💧 None 💨 7 km/h H 92%1034 hPa

5:00 AM

Clear night

8° 💧 None 💨 8 km/h H 93%1034 hPa

6:00 AM

Clear night

8° 💧 None 💨 9 km/h H 95%1035 hPa

7:00 AM

Sunny

8° 💧 None 💨 9 km/h H 96%1036 hPa

8:00 AM

Sunny

9° 💧 None 💨 12 km/h H 92%1036 hPa

9:00 AM

Sunny

11° 💧 None 💨 13 km/h H 86%1036 hPa

10:00 AM

Sunny

12° 💧 None 💨 12 km/h H 80%1037 hPa

11:00 AM

Sunny

14° 💧 None 💨 13 km/h H 74%1037 hPa

12:00 PM

Sunny

16° 💧 None 💨 14 km/h H 67%1036 hPa

1:00 PM

Sunny

17° 💧 None 💨 15 km/h H 59%1036 hPa

2:00 PM

Sunny

17° 💧 None 💨 16 km/h H 53%1035 hPa

3:00 PM

Sunny

18° 💧 None 💨 16 km/h H 52%1034 hPa

4:00 PM

Sunny

17° 💧 None 💨 16 km/h H 53%1034 hPa

5:00 PM

Sunny

17° 💧 None 💨 15 km/h H 55%1034 hPa

6:00 PM

Sunny

16° 💧 None 💨 13 km/h H 61%1034 hPa

7:00 PM

Clear night

14° 💧 None 💨 12 km/h H 67%1034 hPa

8:00 PM

Clear night

13° 💧 None 💨 12 km/h H 72%1034 hPa

9:00 PM

Clear night

12° 💧 None 💨 11 km/h H 75%1035 hPa

10:00 PM

Clear night

11° 💧 None 💨 9 km/h H 79%1035 hPa

11:00 PM

Clear night

11° 💧 None 💨 8 km/h H 84%1035 hPa

Thursday

12:00 AM

Clear night

10° 💧 None 💨 7 km/h H 87%1034 hPa

1:00 AM

Clear night

10° 💧 None 💨 6 km/h H 89%1034 hPa

2:00 AM

Clear night

9° 💧 None 💨 6 km/h H 90%1034 hPa

3:00 AM

Clear night

9° 💧 None 💨 6 km/h H 92%1034 hPa

4:00 AM

Clear night

9° 💧 None 💨 7 km/h H 93%1034 hPa

5:00 AM

Clear night

8° 💧 None 💨 6 km/h H 94%1034 hPa

6:00 AM

Clear night

8° 💧 None 💨 5 km/h H 96%1034 hPa

7:00 AM

Mostly sunny

8° 💧 None 💨 5 km/h H 97%1034 hPa

8:00 AM

Mostly sunny

9° 💧 None 💨 7 km/h H 95%1034 hPa

9:00 AM

Sunny

11° 💧 None 💨 5 km/h H 87%1034 hPa

10:00 AM

Sunny

13° 💧 None 💨 6 km/h H 79%1034 hPa

11:00 AM

Sunny

15° 💧 None 💨 8 km/h H 70%1034 hPa

12:00 PM

Sunny

16° 💧 None 💨 9 km/h H 61%1033 hPa

1:00 PM

Sunny

18° 💧 None 💨 11 km/h H 55%1032 hPa

2:00 PM

Sunny

18° 💧 None 💨 12 km/h H 51%1031 hPa

3:00 PM

Sunny

18° 💧 None 💨 12 km/h H 50%1030 hPa

4:00 PM

Sunny

18° 💧 None 💨 12 km/h H 50%1030 hPa

5:00 PM

Sunny

18° 💧 None 💨 11 km/h H 54%1030 hPa

6:00 PM

Sunny

16° 💧 None 💨 8 km/h H 65%1029 hPa

7:00 PM

Clear night

14° 💧 None 💨 6 km/h H 75%1029 hPa

8:00 PM

Clear night

13° 💧 None 💨 4 km/h H 78%1029 hPa

Friday

5:00 AM

Overcast night

9° 💧 None 💨 1 km/h H 100%1027 hPa

8:00 AM

Partly cloudy

10° 💧 None 💨 4 km/h H 98%1028 hPa

11:00 AM

Sunny

16° 💧 None 💨 7 km/h H 74%1027 hPa

2:00 PM

Sunny

20° 💧 None 💨 11 km/h H 56%1026 hPa

5:00 PM

Sunny

20° 💧 None 💨 10 km/h H 55%1024 hPa

8:00 PM

Clear night

15° 💧 None 💨 6 km/h H 78%1024 hPa

11:00 PM

Clear night

13° 💧 None 💨 3 km/h H 80%1024 hPa

Saturday

2:00 AM

Clear night

11° 💧 None 💨 1 km/h H 87%1023 hPa

5:00 AM

Mostly clear night

10° 💧 None 💨 7 km/h H 94%1023 hPa

8:00 AM

Mostly sunny

12° 💧 None 💨 9 km/h H 92%1024 hPa

11:00 AM

Mostly sunny

17° 💧 None 💨 10 km/h H 67%1024 hPa

2:00 PM

Overcast

20° 💧 None 💨 14 km/h H 51%1022 hPa

5:00 PM

Overcast

20° 💧 None 💨 11 km/h H 56%1021 hPa

8:00 PM

Mostly cloudy night

15° 💧 None 💨 9 km/h H 73%1020 hPa

11:00 PM

Mostly cloudy night

13° 💧 None 💨 8 km/h H 84%1020 hPa

Sunday

2:00 AM

Clear night

13° 💧 None 💨 13 km/h H 82%1019 hPa

5:00 AM

Mostly clear night

12° 💧 None 💨 13 km/h H 85%1019 hPa

8:00 AM

Mostly sunny

12° 💧 None 💨 13 km/h H 86%1019 hPa

11:00 AM

Mostly sunny

17° 💧 None 💨 17 km/h H 66%1018 hPa

2:00 PM

Overcast

19° 💧 None 💨 18 km/h H 55%1017 hPa

5:00 PM

Overcast

19° 💧 None 💨 13 km/h H 59%1016 hPa

8:00 PM

Mostly clear night

16° 💧 None 💨 14 km/h H 73%1016 hPa

11:00 PM

Mostly clear night

14° 💧 None 💨 13 km/h H 84%1016 hPa

Monday

2:00 AM

Mostly clear night

14° 💧 None 💨 12 km/h H 81%1015 hPa

8:00 AM

Mostly sunny

14° 💧 None 💨 16 km/h H 74%1014 hPa

2:00 PM

Partly cloudy

13° 💧 None 💨 12 km/h H 83%1014 hPa

8:00 PM

Mostly clear night

20° 💧 None 💨 15 km/h H 63%1013 hPa

Tuesday

2:00 AM

Mostly clear night

17° 💧 None 💨 11 km/h H 78%1013 hPa

8:00 AM

Sunny

14° 💧 None 💨 9 km/h H 88%1014 hPa

2:00 PM

Sunny

13° 💧 None 💨 9 km/h H 88%1015 hPa

8:00 PM

Clear night

20° 💧 None 💨 10 km/h H 64%1015 hPa

Wednesday

2:00 AM

Mostly clear night

17° 💧 None 💨 7 km/h H 82%1016 hPa

8:00 AM

Mostly cloudy

15° 💧 None 💨 7 km/h H 92%1017 hPa

2:00 PM

Mostly sunny

14° 💧 None 💨 3 km/h H 95%1020 hPa

8:00 PM

Mostly clear night

22° 💧 None 💨 3 km/h H 64%1019 hPa

Thursday

2:00 AM

Overcast night

19° 💧 None 💨 2 km/h H 87%1020 hPa

8:00 AM

Mostly sunny

17° 💧 None 💨 5 km/h H 92%1021 hPa

2:00 PM

Mostly sunny

16° 💧 None 💨 7 km/h H 96%1023 hPa

8:00 PM

Mostly clear night

24° 💧 None 💨 7 km/h H 59%1023 hPa

Friday

2:00 AM

Clear night

18° 💧 None 💨 6 km/h H 83%1024 hPa

8:00 AM

Mostly cloudy

14° 💧 None 💨 3 km/h H 91%1025 hPa

2:00 PM

Mostly cloudy

15° 💧 None 💨 6 km/h H 94%1026 hPa

8:00 PM

Mostly cloudy night

25° 💧 None 💨 9 km/h H 54%1024 hPa

Saturday

2:00 AM

Mostly cloudy night

20° 💧 None 💨 10 km/h H 73%1022 hPa

8:00 AM

Mostly cloudy

16° 💧 None 💨 8 km/h H 91%1021 hPa

2:00 PM

Partly cloudy

17° 💧 None 💨 10 km/h H 84%1021 hPa

8:00 PM

Mostly clear night

25° 💧 None 💨 13 km/h H 64%1018 hPa

Sunday

2:00 AM

Mostly clear night

21° 💧 None 💨 15 km/h H 76%1017 hPa

8:00 AM

Partly cloudy

18° 💧 None 💨 13 km/h H 88%1017 hPa

2:00 PM

Mostly sunny

18° 💧 None 💨 12 km/h H 85%1016 hPa

8:00 PM

Mostly cloudy night

26° 💧 None 💨 21 km/h H 52%1013 hPa

Monday

2:00 AM

Light rain

22° 💧 None 💨 15 km/h H 63%1010 hPa

8:00 AM

Light rain

18° 💧 None 💨 23 km/h H 96%1008 hPa

2:00 PM

Sunny

13° 💧 None 💨 18 km/h H 77%1014 hPa

8:00 PM

Clear night

16° 💧 None 💨 17 km/h H 48%1016 hPa

Tuesday

2:00 AM

Clear night

13° 💧 None 💨 11 km/h H 62%1018 hPa

8:00 AM

Sunny

10° 💧 None 💨 6 km/h H 76%1021 hPa

2:00 PM

Overcast

9° 💧 None 💨 7 km/h H 88%1022 hPa

8:00 PM

Overcast night

16° 💧 None 💨 6 km/h H 45%1020 hPa

Wednesday

2:00 AM

Overcast night

14° 💧 None 💨 3 km/h H 78%1017 hPa

In Cornwall and, more broadly, across the province of Ontario: This morning across the region, mainly cloudy skies are expected to persist, with temperatures ranging from about 8 to 17 degrees Celsius. In many areas, conditions are expected to remain dry through the early hours. During the afternoon, skies will likely stay mostly cloudy, with temperatures remaining steady within the same range. Winds will predominantly come from the northeast at around 14 km/h, with gusts reaching up to 32 km/h at times. Overall, little to no precipitation is anticipated today, but the breeze from the northeast may cause some minor disturbances locally. No significant weather hazards are expected in the coming hours.

15-Day Weather Outlook for Cornwall

TomorrowTomorrow

Sunny 18°/8° 💧 None 💨 16 km/h

Thursday, Sep 24Thu Sep 24

Mostly sunny 18°/8° 💧 None 💨 12 km/h

Friday, Sep 25Fri Sep 25

Overcast 20°/9° 💧 None 💨 11 km/h

Saturday, Sep 26Sat Sep 26

Mostly sunny 20°/10° 💧 None 💨 14 km/h

Sunday, Sep 27Sun Sep 27

Mostly sunny 19°/12° 💧 None 💨 18 km/h

Monday, Sep 28Mon Sep 28

Mostly sunny 20°/13° 💧 None 💨 16 km/h

Tuesday, Sep 29Tue Sep 29

Mostly sunny 20°/13° 💧 None 💨 11 km/h

Wednesday, Sep 30Wed Sep 30

Mostly sunny 22°/14° 💧 None 💨 7 km/h

Thursday, Oct 1Thu Oct 1

Overcast 24°/16° 💧 None 💨 7 km/h

Friday, Oct 2Fri Oct 2

Mostly cloudy 25°/14° 💧 None 💨 9 km/h

Saturday, Oct 3Sat Oct 3

Mostly cloudy 25°/16° 💧 None 💨 13 km/h

Sunday, Oct 4Sun Oct 4

Mostly sunny 26°/18° 💧 0.0 mm 💨 21 km/h

Monday, Oct 5Mon Oct 5

Light rain 22°/13° 💧 6.2 mm 💨 23 km/h

Tuesday, Oct 6Tue Oct 6

Overcast 16°/9° 💧 None 💨 11 km/h

Wednesday, Oct 7Wed Oct 7

Overcast 14°/14° 💧 None 💨 3 km/h

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Cornwall

Vertical axis: °C · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Cornwall

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 PM

PM2.5 Fine particles Good 0,9µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 1,2µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 63,5µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,7µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Cornwall

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 4,5Moderate 🙂Fair

Tomorrow UV 4,5Moderate 🙂Fair

Thursday UV 4,6Moderate 🙂Fair

Friday UV 4,5Moderate 🙂Fair

Saturday UV 6,0High 🙂Fair

Sunday UV 6,0High —Unavailable

Monday UV 6,0High —Unavailable

Hourly UV index today

1:00 PMUV 4,5 2:00 PMUV 4,2 3:00 PMUV 3,2 4:00 PMUV 1,9 5:00 PMUV 0,9 6:00 PMUV 0,2 7:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Cornwall

Vertical axis: km/h · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · CORNWALL, ONTARIO

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

97/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:35 PM–5:08 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 88% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 60° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min71%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Cornwall were last refreshed today at 12:08 PM. The current forecast period extends through 24/09/2026 at 10:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.