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Now · 4:24 AM

Black River-Matheson Weather & Hourly Forecast

Canada · Ontario

5°C

Clear night

Feels like: 2°C

💧 Humidity 81% 🌡 Pressure 1036 hPa 💨 Wind 8 km/h 👁 Visibility 60.2 km ☁ Clouds 0% ☀️ UV index 0.0 · Low 🌅 Sunrise 7:08 AM 🌇 Sunset 7:19 PM

Hourly Forecast for Black River-Matheson

Today

5:00 AM

Clear night

5° 💧 None 💨 7 km/h H 81%1036 hPa

8:00 AM

Sunny

5° 💧 None 💨 6 km/h H 84%1038 hPa

11:00 AM

Sunny

14° 💧 None 💨 5 km/h H 51%1038 hPa

2:00 PM

Sunny

18° 💧 None 💨 7 km/h H 40%1036 hPa

5:00 PM

Sunny

18° 💧 None 💨 8 km/h H 43%1034 hPa

8:00 PM

Clear night

11° 💧 None 💨 9 km/h H 70%1034 hPa

11:00 PM

Clear night

8° 💧 None 💨 8 km/h H 80%1034 hPa

Tomorrow

2:00 AM

Clear night

7° 💧 None 💨 6 km/h H 84%1034 hPa

5:00 AM

Clear night

5° 💧 None 💨 6 km/h H 90%1034 hPa

8:00 AM

Sunny

6° 💧 None 💨 6 km/h H 92%1035 hPa

11:00 AM

Sunny

15° 💧 None 💨 5 km/h H 60%1034 hPa

2:00 PM

Sunny

18° 💧 None 💨 5 km/h H 44%1032 hPa

5:00 PM

Sunny

18° 💧 None 💨 6 km/h H 42%1030 hPa

8:00 PM

Clear night

11° 💧 None 💨 8 km/h H 74%1030 hPa

11:00 PM

Clear night

9° 💧 None 💨 10 km/h H 88%1029 hPa

Friday

2:00 AM

Clear night

7° 💧 None 💨 8 km/h H 88%1029 hPa

Today

5:00 AM

Clear night

5° 💧 None 💨 7 km/h H 81%1036 hPa

6:00 AM

Clear night

4° 💧 None 💨 6 km/h H 82%1037 hPa

7:00 AM

Clear night

4° 💧 None 💨 6 km/h H 83%1037 hPa

8:00 AM

Sunny

5° 💧 None 💨 6 km/h H 84%1038 hPa

9:00 AM

Sunny

8° 💧 None 💨 6 km/h H 75%1038 hPa

10:00 AM

Sunny

12° 💧 None 💨 3 km/h H 66%1038 hPa

11:00 AM

Sunny

14° 💧 None 💨 5 km/h H 51%1038 hPa

12:00 PM

Sunny

16° 💧 None 💨 6 km/h H 43%1038 hPa

1:00 PM

Sunny

17° 💧 None 💨 6 km/h H 41%1037 hPa

2:00 PM

Sunny

18° 💧 None 💨 7 km/h H 40%1036 hPa

3:00 PM

Sunny

18° 💧 None 💨 8 km/h H 41%1036 hPa

4:00 PM

Sunny

19° 💧 None 💨 8 km/h H 41%1035 hPa

5:00 PM

Sunny

18° 💧 None 💨 8 km/h H 43%1034 hPa

6:00 PM

Sunny

17° 💧 None 💨 7 km/h H 56%1034 hPa

7:00 PM

Sunny

13° 💧 None 💨 8 km/h H 65%1034 hPa

8:00 PM

Clear night

11° 💧 None 💨 9 km/h H 70%1034 hPa

9:00 PM

Clear night

10° 💧 None 💨 8 km/h H 76%1035 hPa

10:00 PM

Clear night

9° 💧 None 💨 8 km/h H 80%1035 hPa

11:00 PM

Clear night

8° 💧 None 💨 8 km/h H 80%1034 hPa

Tomorrow

12:00 AM

Clear night

8° 💧 None 💨 8 km/h H 80%1034 hPa

1:00 AM

Clear night

7° 💧 None 💨 7 km/h H 81%1034 hPa

2:00 AM

Clear night

7° 💧 None 💨 6 km/h H 84%1034 hPa

3:00 AM

Clear night

6° 💧 None 💨 7 km/h H 86%1034 hPa

4:00 AM

Clear night

5° 💧 None 💨 6 km/h H 88%1034 hPa

5:00 AM

Clear night

5° 💧 None 💨 6 km/h H 90%1034 hPa

6:00 AM

Clear night

5° 💧 None 💨 5 km/h H 90%1035 hPa

7:00 AM

Clear night

4° 💧 None 💨 5 km/h H 91%1035 hPa

8:00 AM

Sunny

6° 💧 None 💨 6 km/h H 92%1035 hPa

9:00 AM

Sunny

9° 💧 None 💨 7 km/h H 83%1034 hPa

10:00 AM

Sunny

12° 💧 None 💨 5 km/h H 74%1034 hPa

11:00 AM

Sunny

15° 💧 None 💨 5 km/h H 60%1034 hPa

12:00 PM

Sunny

16° 💧 None 💨 4 km/h H 51%1034 hPa

1:00 PM

Sunny

17° 💧 None 💨 3 km/h H 47%1033 hPa

2:00 PM

Sunny

18° 💧 None 💨 5 km/h H 44%1032 hPa

3:00 PM

Sunny

19° 💧 None 💨 6 km/h H 41%1031 hPa

4:00 PM

Sunny

19° 💧 None 💨 6 km/h H 41%1030 hPa

5:00 PM

Sunny

18° 💧 None 💨 6 km/h H 42%1030 hPa

6:00 PM

Sunny

17° 💧 None 💨 4 km/h H 63%1030 hPa

7:00 PM

Sunny

14° 💧 None 💨 6 km/h H 66%1030 hPa

8:00 PM

Clear night

11° 💧 None 💨 8 km/h H 74%1030 hPa

9:00 PM

Clear night

10° 💧 None 💨 10 km/h H 79%1030 hPa

10:00 PM

Clear night

10° 💧 None 💨 11 km/h H 85%1030 hPa

11:00 PM

Clear night

9° 💧 None 💨 10 km/h H 88%1029 hPa

Friday

12:00 AM

Clear night

9° 💧 None 💨 10 km/h H 89%1029 hPa

1:00 AM

Clear night

8° 💧 None 💨 10 km/h H 89%1029 hPa

2:00 AM

Clear night

7° 💧 None 💨 8 km/h H 88%1029 hPa

3:00 AM

Clear night

7° 💧 None 💨 7 km/h H 87%1029 hPa

4:00 AM

Partly cloudy night

7° 💧 None 💨 7 km/h H 85%1029 hPa

5:00 AM

Partly cloudy night

6° 💧 None 💨 7 km/h H 83%1029 hPa

6:00 AM

Mostly cloudy night

6° 💧 None 💨 6 km/h H 84%1029 hPa

7:00 AM

Overcast night

6° 💧 None 💨 6 km/h H 86%1029 hPa

8:00 AM

Overcast

6° 💧 None 💨 6 km/h H 90%1030 hPa

9:00 AM

Overcast

9° 💧 None 💨 5 km/h H 85%1030 hPa

10:00 AM

Overcast

12° 💧 None 💨 4 km/h H 81%1030 hPa

11:00 AM

Mostly cloudy

14° 💧 None 💨 4 km/h H 73%1029 hPa

12:00 PM

Overcast

16° 💧 None 💨 4 km/h H 66%1029 hPa

1:00 PM

Overcast

18° 💧 None 💨 4 km/h H 60%1028 hPa

2:00 PM

Overcast

18° 💧 None 💨 3 km/h H 55%1027 hPa

3:00 PM

Overcast

19° 💧 None 💨 3 km/h H 54%1027 hPa

4:00 PM

Overcast

19° 💧 None 💨 4 km/h H 52%1026 hPa

5:00 PM

Overcast

19° 💧 None 💨 5 km/h H 55%1026 hPa

6:00 PM

Mostly cloudy

17° 💧 None 💨 6 km/h H 69%1026 hPa

7:00 PM

Sunny

14° 💧 None 💨 7 km/h H 79%1026 hPa

8:00 PM

Clear night

12° 💧 None 💨 5 km/h H 81%1026 hPa

11:00 PM

Clear night

9° 💧 None 💨 2 km/h H 90%1027 hPa

Saturday

2:00 AM

Mostly clear night

7° 💧 None 💨 5 km/h H 96%1027 hPa

5:00 AM

Partly cloudy night

6° 💧 None 💨 2 km/h H 99%1027 hPa

8:00 AM

Overcast

5° 💧 None 💨 3 km/h H 99%1028 hPa

11:00 AM

Sunny

15° 💧 None 💨 0 km/h H 76%1028 hPa

2:00 PM

Sunny

19° 💧 None 💨 4 km/h H 49%1026 hPa

5:00 PM

Sunny

19° 💧 None 💨 7 km/h H 52%1025 hPa

8:00 PM

Clear night

12° 💧 None 💨 6 km/h H 79%1025 hPa

11:00 PM

Clear night

9° 💧 None 💨 6 km/h H 86%1024 hPa

Sunday

2:00 AM

Clear night

7° 💧 None 💨 6 km/h H 94%1024 hPa

5:00 AM

Clear night

7° 💧 None 💨 4 km/h H 94%1024 hPa

8:00 AM

Overcast

6° 💧 None 💨 1 km/h H 99%1024 hPa

11:00 AM

Sunny

16° 💧 None 💨 1 km/h H 68%1023 hPa

2:00 PM

Sunny

20° 💧 None 💨 3 km/h H 46%1021 hPa

5:00 PM

Sunny

21° 💧 None 💨 4 km/h H 45%1019 hPa

8:00 PM

Clear night

13° 💧 None 💨 5 km/h H 82%1018 hPa

11:00 PM

Clear night

10° 💧 None 💨 6 km/h H 86%1018 hPa

Monday

2:00 AM

Mostly clear night

7° 💧 None 💨 4 km/h H 94%1017 hPa

5:00 AM

Partly cloudy night

7° 💧 None 💨 6 km/h H 96%1017 hPa

8:00 AM

Mostly cloudy

7° 💧 None 💨 5 km/h H 99%1017 hPa

11:00 AM

Partly cloudy

15° 💧 None 💨 3 km/h H 73%1016 hPa

2:00 PM

Sunny

20° 💧 None 💨 6 km/h H 46%1014 hPa

5:00 PM

Sunny

20° 💧 None 💨 6 km/h H 42%1013 hPa

8:00 PM

Clear night

14° 💧 None 💨 2 km/h H 67%1013 hPa

Tuesday

2:00 AM

Mostly cloudy night

10° 💧 None 💨 2 km/h H 94%1013 hPa

8:00 AM

Overcast

11° 💧 None 💨 4 km/h H 95%1014 hPa

2:00 PM

Mostly sunny

21° 💧 None 💨 10 km/h H 39%1011 hPa

8:00 PM

Mostly clear night

15° 💧 None 💨 13 km/h H 62%1010 hPa

Wednesday

2:00 AM

Overcast night

13° 💧 None 💨 13 km/h H 83%1009 hPa

8:00 AM

Light rain

13° 💧 None 💨 13 km/h H 97%1008 hPa

2:00 PM

Moderate rain

14° 💧 None 💨 8 km/h H 99%1005 hPa

8:00 PM

Overcast night

12° 💧 None 💨 18 km/h H 99%1007 hPa

Thursday

2:00 AM

Overcast night

9° 💧 None 💨 15 km/h H 84%1012 hPa

8:00 AM

Overcast

7° 💧 None 💨 18 km/h H 77%1013 hPa

2:00 PM

Moderate rain

6° 💧 None 💨 19 km/h H 96%1010 hPa

8:00 PM

Moderate rain

6° 💧 None 💨 27 km/h H 98%1003 hPa

Friday

2:00 AM

Light rain

7° 💧 None 💨 16 km/h H 99%996 hPa

8:00 AM

Overcast

7° 💧 None 💨 21 km/h H 93%996 hPa

2:00 PM

Light rain

5° 💧 None 💨 26 km/h H 83%999 hPa

8:00 PM

Light rain

4° 💧 None 💨 20 km/h H 98%1004 hPa

Saturday

2:00 AM

Light rain

3° 💧 None 💨 21 km/h H 98%1008 hPa

8:00 AM

Overcast

3° 💧 None 💨 19 km/h H 92%1014 hPa

2:00 PM

Overcast

5° 💧 None 💨 18 km/h H 63%1017 hPa

8:00 PM

Clear night

3° 💧 None 💨 8 km/h H 76%1019 hPa

Sunday

2:00 AM

Clear night

1° 💧 None 💨 11 km/h H 93%1020 hPa

8:00 AM

Overcast

1° 💧 None 💨 11 km/h H 98%1022 hPa

2:00 PM

Overcast

10° 💧 None 💨 17 km/h H 50%1019 hPa

8:00 PM

Mostly cloudy night

8° 💧 None 💨 10 km/h H 68%1018 hPa

Monday

2:00 AM

Overcast night

5° 💧 None 💨 11 km/h H 84%1017 hPa

8:00 AM

Light rain

6° 💧 None 💨 7 km/h H 89%1017 hPa

2:00 PM

Moderate rain

9° 💧 None 💨 7 km/h H 98%1013 hPa

8:00 PM

Light rain

10° 💧 None 💨 6 km/h H 99%1010 hPa

Tuesday

2:00 AM

Overcast night

9° 💧 None 💨 12 km/h H 99%1007 hPa

8:00 AM

Overcast

12° 💧 None 💨 25 km/h H 98%999 hPa

2:00 PM

Light rain

15° 💧 None 💨 26 km/h H 49%996 hPa

8:00 PM

Light rain

9° 💧 None 💨 24 km/h H 72%995 hPa

Wednesday

2:00 AM

Light rain

5° 💧 None 💨 27 km/h H 98%998 hPa

8:00 AM

Mostly cloudy

3° 💧 None 💨 18 km/h H 86%1006 hPa

2:00 PM

Light rain

6° 💧 None 💨 19 km/h H 76%1007 hPa

8:00 PM

Mostly cloudy night

4° 💧 None 💨 14 km/h H 92%1009 hPa

In Black River-Matheson 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 Black River-Matheson

TomorrowTomorrow

Sunny 19°/4° 💧 None 💨 12 km/h

Friday, Sep 25Fri Sep 25

Partly cloudy 19°/6° 💧 None 💨 11 km/h

Saturday, Sep 26Sat Sep 26

Mostly sunny 20°/6° 💧 None 💨 9 km/h

Sunday, Sep 27Sun Sep 27

Mostly sunny 21°/6° 💧 None 💨 7 km/h

Monday, Sep 28Mon Sep 28

Mostly cloudy 21°/7° 💧 0.3 mm 💨 8 km/h

Tuesday, Sep 29Tue Sep 29

Partly cloudy 23°/11° 💧 None 💨 17 km/h

Wednesday, Sep 30Wed Sep 30

Overcast 19°/14° 💧 0.2 mm 💨 11 km/h

Thursday, Oct 1Thu Oct 1

Light rain 20°/10° 💧 2.4 mm 💨 9 km/h

Friday, Oct 2Fri Oct 2

Moderate rain 15°/13° 💧 13 mm 💨 18 km/h

Saturday, Oct 3Sat Oct 3

Moderate rain 20°/15° 💧 23 mm 💨 19 km/h

Sunday, Oct 4Sun Oct 4

Moderate rain 20°/14° 💧 15 mm 💨 12 km/h

Monday, Oct 5Mon Oct 5

Light rain 16°/8° 💧 1.9 mm 💨 7 km/h

Tuesday, Oct 6Tue Oct 6

Light rain 11°/8° 💧 3.1 mm 💨 18 km/h

Wednesday, Oct 7Wed Oct 7

Overcast 9°/9° 💧 0.7 mm 💨 15 km/h

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Black River-Matheson

Vertical axis: °C · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Black River-Matheson

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 5:00 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 Good 40,6µg/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 favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Black River-Matheson

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 4,3Moderate 😊Good

Tomorrow UV 4,1Moderate 🙂Fair

Friday UV 3,7Moderate 🙂Fair

Saturday UV 2,2Low 🙂Fair

Sunday UV 5,0Moderate 😊Good

Monday UV 6,0High —Unavailable

Tuesday UV 6,0High —Unavailable

Hourly UV index today

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

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

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 Black River-Matheson

Vertical axis: km/h · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · BLACK RIVER-MATHESON, ONTARIO

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

100/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:06 PM–5:23 AM

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

☾ Moonlight 89% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 56° 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 Black River-Matheson were last refreshed today at 4:24 AM. The current forecast period extends through 25/09/2026 at 2:00 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.