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Now · 1:47 AM

Greater Sudbury / Grand Sudbury Weather & Hourly Forecast

Canada · Ontario

9°C

Clear night

Feels like: 6°C

💧 Humidity 92% 🌡 Pressure 1018 hPa 💨 Wind 11 km/h 👁 Visibility 38.3 km ☁ Clouds 2% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Greater Sudbury / Grand Sudbury

Today

2:00 AM

Clear night

9° 💧 None 💨 11 km/h H 92%1018 hPa

5:00 AM

Clear night

8° 💧 None 💨 10 km/h H 94%1020 hPa

8:00 AM

Sunny

9° 💧 None 💨 10 km/h H 92%1022 hPa

11:00 AM

Mostly cloudy

14° 💧 None 💨 8 km/h H 52%1023 hPa

2:00 PM

Mostly cloudy

17° 💧 None 💨 7 km/h H 43%1022 hPa

5:00 PM

Mostly cloudy

17° 💧 None 💨 11 km/h H 42%1022 hPa

8:00 PM

Partly cloudy night

12° 💧 None 💨 8 km/h H 69%1021 hPa

11:00 PM

Mostly cloudy night

11° 💧 None 💨 10 km/h H 84%1022 hPa

Tomorrow

2:00 AM

Overcast night

11° 💧 0.2 mm 💨 13 km/h H 82%1021 hPa

5:00 AM

Light rain

12° 💧 2.2 mm 💨 18 km/h H 87%1018 hPa

8:00 AM

Light rain

13° 💧 2.9 mm 💨 25 km/h H 91%1016 hPa

11:00 AM

Light rain

14° 💧 1.2 mm 💨 29 km/h H 93%1015 hPa

2:00 PM

Light rain

17° 💧 0.4 mm 💨 25 km/h H 92%1013 hPa

5:00 PM

Mostly cloudy

19° 💧 0.0 mm 💨 24 km/h H 88%1012 hPa

8:00 PM

Overcast night

19° 💧 None 💨 21 km/h H 79%1014 hPa

11:00 PM

Mostly cloudy night

15° 💧 None 💨 14 km/h H 70%1019 hPa

Today

2:00 AM

Clear night

9° 💧 None 💨 11 km/h H 92%1018 hPa

3:00 AM

Clear night

9° 💧 None 💨 10 km/h H 92%1018 hPa

4:00 AM

Clear night

8° 💧 None 💨 10 km/h H 94%1019 hPa

5:00 AM

Clear night

8° 💧 None 💨 10 km/h H 94%1020 hPa

6:00 AM

Clear night

8° 💧 None 💨 10 km/h H 94%1021 hPa

7:00 AM

Sunny

8° 💧 None 💨 10 km/h H 95%1022 hPa

8:00 AM

Sunny

9° 💧 None 💨 10 km/h H 92%1022 hPa

9:00 AM

Sunny

11° 💧 None 💨 8 km/h H 83%1023 hPa

10:00 AM

Sunny

13° 💧 None 💨 7 km/h H 66%1023 hPa

11:00 AM

Mostly cloudy

14° 💧 None 💨 8 km/h H 52%1023 hPa

12:00 PM

Overcast

15° 💧 None 💨 8 km/h H 48%1023 hPa

1:00 PM

Mostly cloudy

16° 💧 None 💨 8 km/h H 45%1023 hPa

2:00 PM

Mostly cloudy

17° 💧 None 💨 7 km/h H 43%1022 hPa

3:00 PM

Sunny

17° 💧 None 💨 5 km/h H 40%1022 hPa

4:00 PM

Sunny

18° 💧 None 💨 8 km/h H 41%1022 hPa

5:00 PM

Mostly cloudy

17° 💧 None 💨 11 km/h H 42%1022 hPa

6:00 PM

Partly cloudy

17° 💧 None 💨 7 km/h H 45%1021 hPa

7:00 PM

Mostly sunny

15° 💧 None 💨 7 km/h H 59%1021 hPa

8:00 PM

Partly cloudy night

12° 💧 None 💨 8 km/h H 69%1021 hPa

9:00 PM

Overcast night

12° 💧 None 💨 7 km/h H 76%1021 hPa

10:00 PM

Overcast night

11° 💧 None 💨 10 km/h H 81%1022 hPa

11:00 PM

Mostly cloudy night

11° 💧 None 💨 10 km/h H 84%1022 hPa

Tomorrow

12:00 AM

Overcast night

11° 💧 None 💨 11 km/h H 85%1022 hPa

1:00 AM

Overcast night

11° 💧 None 💨 13 km/h H 82%1021 hPa

2:00 AM

Overcast night

11° 💧 None 💨 13 km/h H 82%1021 hPa

3:00 AM

Overcast night

12° 💧 None 💨 13 km/h H 82%1020 hPa

4:00 AM

Light rain

12° 💧 0.2 mm 💨 14 km/h H 84%1020 hPa

5:00 AM

Light rain

12° 💧 0.7 mm 💨 18 km/h H 87%1018 hPa

6:00 AM

Light rain

13° 💧 0.3 mm 💨 19 km/h H 88%1018 hPa

7:00 AM

Light rain

13° 💧 1.2 mm 💨 20 km/h H 89%1018 hPa

8:00 AM

Light rain

13° 💧 1.4 mm 💨 25 km/h H 91%1016 hPa

9:00 AM

Light rain

14° 💧 0.6 mm 💨 27 km/h H 93%1016 hPa

10:00 AM

Light rain

14° 💧 0.9 mm 💨 29 km/h H 93%1015 hPa

11:00 AM

Light rain

14° 💧 0.4 mm 💨 29 km/h H 93%1015 hPa

12:00 PM

Light rain

15° 💧 0.5 mm 💨 28 km/h H 91%1014 hPa

1:00 PM

Light rain

16° 💧 0.3 mm 💨 25 km/h H 90%1013 hPa

2:00 PM

Light rain

17° 💧 0.2 mm 💨 25 km/h H 92%1013 hPa

3:00 PM

Light rain

17° 💧 0.1 mm 💨 23 km/h H 92%1012 hPa

4:00 PM

Overcast

18° 💧 0.1 mm 💨 20 km/h H 91%1012 hPa

5:00 PM

Mostly cloudy

19° 💧 0.0 mm 💨 24 km/h H 88%1012 hPa

6:00 PM

Mostly cloudy

20° 💧 0.0 mm 💨 20 km/h H 85%1012 hPa

7:00 PM

Overcast

19° 💧 None 💨 24 km/h H 81%1013 hPa

8:00 PM

Overcast night

19° 💧 None 💨 21 km/h H 79%1014 hPa

9:00 PM

Overcast night

18° 💧 None 💨 16 km/h H 79%1016 hPa

10:00 PM

Overcast night

16° 💧 None 💨 16 km/h H 68%1018 hPa

11:00 PM

Mostly cloudy night

15° 💧 None 💨 14 km/h H 70%1019 hPa

Wednesday

12:00 AM

Clear night

13° 💧 None 💨 13 km/h H 74%1020 hPa

1:00 AM

Mostly clear night

12° 💧 None 💨 11 km/h H 81%1021 hPa

2:00 AM

Overcast night

11° 💧 None 💨 9 km/h H 87%1022 hPa

3:00 AM

Clear night

10° 💧 None 💨 9 km/h H 89%1023 hPa

4:00 AM

Clear night

10° 💧 None 💨 8 km/h H 90%1024 hPa

5:00 AM

Clear night

9° 💧 None 💨 7 km/h H 91%1024 hPa

6:00 AM

Clear night

9° 💧 None 💨 6 km/h H 91%1026 hPa

7:00 AM

Clear night

8° 💧 None 💨 6 km/h H 92%1027 hPa

8:00 AM

Sunny

10° 💧 None 💨 7 km/h H 90%1028 hPa

5:00 PM

Overcast

21° 💧 None 💨 5 km/h H 50%1027 hPa

8:00 PM

Overcast night

16° 💧 None 💨 7 km/h H 75%1027 hPa

11:00 PM

Overcast night

15° 💧 None 💨 5 km/h H 87%1027 hPa

Thursday

2:00 AM

Overcast night

13° 💧 None 💨 2 km/h H 93%1026 hPa

5:00 AM

Overcast night

14° 💧 None 💨 1 km/h H 92%1025 hPa

8:00 AM

Overcast

14° 💧 None 💨 2 km/h H 94%1025 hPa

11:00 AM

Sunny

18° 💧 None 💨 4 km/h H 69%1025 hPa

2:00 PM

Partly cloudy

21° 💧 None 💨 4 km/h H 51%1023 hPa

5:00 PM

Sunny

21° 💧 None 💨 6 km/h H 45%1021 hPa

8:00 PM

Clear night

18° 💧 None 💨 3 km/h H 70%1021 hPa

11:00 PM

Clear night

14° 💧 None 💨 4 km/h H 93%1022 hPa

Friday

2:00 AM

Clear night

13° 💧 None 💨 6 km/h H 96%1022 hPa

5:00 AM

Partly cloudy night

13° 💧 None 💨 12 km/h H 88%1023 hPa

8:00 AM

Sunny

12° 💧 None 💨 11 km/h H 93%1025 hPa

11:00 AM

Sunny

17° 💧 None 💨 12 km/h H 69%1025 hPa

2:00 PM

Overcast

19° 💧 None 💨 10 km/h H 52%1024 hPa

5:00 PM

Mostly cloudy

19° 💧 None 💨 8 km/h H 45%1024 hPa

8:00 PM

Mostly cloudy night

14° 💧 None 💨 9 km/h H 68%1024 hPa

11:00 PM

Mostly cloudy night

12° 💧 None 💨 9 km/h H 76%1024 hPa

Saturday

2:00 AM

Overcast night

10° 💧 None 💨 9 km/h H 78%1024 hPa

5:00 AM

Overcast night

9° 💧 None 💨 9 km/h H 80%1024 hPa

8:00 AM

Overcast

10° 💧 None 💨 9 km/h H 85%1023 hPa

11:00 AM

Overcast

13° 💧 None 💨 9 km/h H 77%1022 hPa

2:00 PM

Overcast

14° 💧 None 💨 10 km/h H 62%1020 hPa

8:00 PM

Mostly clear night

19° 💧 None 💨 9 km/h H 51%1021 hPa

Sunday

2:00 AM

Partly cloudy night

15° 💧 None 💨 8 km/h H 78%1020 hPa

8:00 AM

Sunny

12° 💧 None 💨 2 km/h H 90%1021 hPa

2:00 PM

Sunny

10° 💧 None 💨 9 km/h H 91%1023 hPa

8:00 PM

Clear night

19° 💧 None 💨 10 km/h H 46%1022 hPa

Monday

2:00 AM

Overcast night

15° 💧 None 💨 11 km/h H 65%1021 hPa

8:00 AM

Overcast

13° 💧 None 💨 11 km/h H 80%1020 hPa

2:00 PM

Light rain

13° 💧 None 💨 15 km/h H 92%1017 hPa

8:00 PM

Moderate rain

16° 💧 None 💨 14 km/h H 96%1012 hPa

Tuesday

2:00 AM

Mostly cloudy night

16° 💧 None 💨 10 km/h H 98%1012 hPa

8:00 AM

Sunny

14° 💧 None 💨 7 km/h H 98%1016 hPa

2:00 PM

Sunny

13° 💧 None 💨 12 km/h H 96%1019 hPa

8:00 PM

Clear night

20° 💧 None 💨 13 km/h H 51%1020 hPa

Wednesday

2:00 AM

Clear night

15° 💧 None 💨 12 km/h H 65%1021 hPa

8:00 AM

Sunny

11° 💧 None 💨 13 km/h H 79%1026 hPa

2:00 PM

Sunny

9° 💧 None 💨 9 km/h H 92%1030 hPa

8:00 PM

Clear night

15° 💧 None 💨 13 km/h H 54%1030 hPa

Thursday

2:00 AM

Clear night

12° 💧 None 💨 11 km/h H 74%1030 hPa

8:00 AM

Sunny

9° 💧 None 💨 7 km/h H 87%1032 hPa

2:00 PM

Sunny

7° 💧 None 💨 8 km/h H 94%1034 hPa

8:00 PM

Mostly clear night

16° 💧 None 💨 2 km/h H 55%1033 hPa

Friday

2:00 AM

Partly cloudy night

13° 💧 None 💨 5 km/h H 76%1031 hPa

8:00 AM

Partly cloudy

9° 💧 None 💨 2 km/h H 100%1031 hPa

2:00 PM

Overcast

7° 💧 None 💨 2 km/h H 99%1032 hPa

8:00 PM

Mostly clear night

18° 💧 None 💨 4 km/h H 60%1030 hPa

Saturday

2:00 AM

Clear night

14° 💧 None 💨 10 km/h H 84%1028 hPa

8:00 AM

Sunny

10° 💧 None 💨 3 km/h H 98%1027 hPa

2:00 PM

Overcast

9° 💧 None 💨 2 km/h H 99%1027 hPa

8:00 PM

Overcast night

18° 💧 None 💨 5 km/h H 52%1024 hPa

Sunday

2:00 AM

Overcast night

14° 💧 None 💨 9 km/h H 82%1021 hPa

8:00 AM

Overcast

12° 💧 None 💨 10 km/h H 93%1018 hPa

2:00 PM

Overcast

13° 💧 None 💨 14 km/h H 95%1014 hPa

8:00 PM

Moderate rain

17° 💧 None 💨 20 km/h H 83%1009 hPa

Monday

2:00 AM

Light rain

16° 💧 None 💨 22 km/h H 94%1006 hPa

8:00 AM

Overcast

16° 💧 None 💨 8 km/h H 99%1005 hPa

2:00 PM

Light rain

16° 💧 None 💨 10 km/h H 99%1005 hPa

In Greater Sudbury / Grand Sudbury and, more broadly, across the province of Ontario: Across the region this evening, mainly cloudy skies are expected to persist, with temperatures remaining between 19 and 24 degrees Celsius. In many areas, there may be some rain or showers, although the likelihood is relatively low, with a maximum model probability of about 20%, and rainfall amounts are expected to be light, up to approximately 0.4 mm. Winds will generally be from the northwest at speeds around 25 km/h, with gusts possibly reaching up to 54 km/h, which could cause some breeziness in parts of the region. Conditions are unlikely to change significantly through the night, but residents should remain aware of the gusty winds, especially in exposed areas. Overall, a cool and breezy evening with occasional light showers in parts of the region.

15-Day Weather Outlook for Greater Sudbury / Grand Sudbury

Monday, Sep 14Mon Sep 14

Mostly cloudy 18°/8° 💧 None 💨 11 km/h

TomorrowTomorrow

Overcast 20°/11° 💧 None 💨 29 km/h

Wednesday, Sep 16Wed Sep 16

Mostly sunny 21°/8° 💧 10 mm 💨 13 km/h

Thursday, Sep 17Thu Sep 17

Overcast 21°/13° 💧 0.4 mm 💨 6 km/h

Friday, Sep 18Fri Sep 18

Partly cloudy 19°/12° 💧 None 💨 12 km/h

Saturday, Sep 19Sat Sep 19

Overcast 19°/9° 💧 0.3 mm 💨 10 km/h

Sunday, Sep 20Sun Sep 20

Partly cloudy 19°/10° 💧 None 💨 10 km/h

Monday, Sep 21Mon Sep 21

Moderate rain 16°/13° 💧 25 mm 💨 15 km/h

Tuesday, Sep 22Tue Sep 22

Mostly cloudy 20°/13° 💧 9.1 mm 💨 13 km/h

Wednesday, Sep 23Wed Sep 23

Sunny 15°/9° 💧 None 💨 13 km/h

Thursday, Sep 24Thu Sep 24

Mostly sunny 16°/7° 💧 None 💨 11 km/h

Friday, Sep 25Fri Sep 25

Partly cloudy 18°/7° 💧 0.0 mm 💨 5 km/h

Saturday, Sep 26Sat Sep 26

Overcast 18°/9° 💧 None 💨 10 km/h

Sunday, Sep 27Sun Sep 27

Moderate rain 17°/12° 💧 1.0 mm 💨 20 km/h

Monday, Sep 28Mon Sep 28

Light rain 16°/16° 💧 11 mm 💨 22 km/h

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Greater Sudbury / Grand Sudbury

Vertical axis: °C · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Greater Sudbury / Grand Sudbury

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 2:00 AM

PM2.5 Fine particles Good 0,5µg/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 0,5µg/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 0,5µg/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 Greater Sudbury / Grand Sudbury

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 4,9Moderate 🙂Fair

Tomorrow UV 0,4Low 🙂Fair

Wednesday UV 4,9Moderate 🙂Fair

Thursday UV 5,0Moderate 🙂Fair

Friday UV 5,0Moderate 🙂Fair

Saturday UV 4,0Moderate —Unavailable

Sunday UV 3,0Moderate —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,2 9:00 AMUV 0,7 10:00 AMUV 1,7 11:00 AMUV 3,0 12:00 PMUV 4,2 1:00 PMUV 4,9 2:00 PMUV 4,8 3:00 PMUV 4,0 4:00 PMUV 2,8 5:00 PMUV 1,5 6:00 PMUV 0,5

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 Greater Sudbury / Grand Sudbury

Vertical axis: km/h · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · GREATER SUDBURY / GRAND SUDBURY, ONTARIO

Tonight's Stargazing & Shooting Stars

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

95/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 9:24 PM–5:17 AM

☁ Cloud cover 2% Real hourly forecast for the best viewing hour.

☾ Moonlight 7% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 77° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min79%

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

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

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

UPCOMING

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

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 Greater Sudbury / Grand Sudbury were last refreshed today at 1:47 AM. The current forecast period extends through 15/09/2026 at 11:00 PM. 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.