Water Temperature of Lake Ontario in Grimsby, Ontario
Current Water Temperature
Measurement Time: Friday, December 5, 2025, 1:00 PM EST
Temperature Locations
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Local Points of Interest
Hamilton, ON; Toronto, ONSponsored Content
Station Name: West Lake Ontario - Grimsby
Station Type: Buoy
Data Source: National Data Buoy Center
Elevation Above Sea Level: 73 meters
Nearest Address:
Grimsby, ON
Niagara Regional District County
GPS Coordinates: 43.25, -79.53
Nearby Water Temperatures
Eighteenmile Creek, Burt, NY (66.3 km)Buffalo River, Buffalo, NY (66.4 km)
Erie Canal, Lockport, NY (68.7 km)
Oak Orchard Creek, Medina, NY (93.1 km)
Oak Orchard Creek, Kenyonville, NY (98.9 km)
Cattaraugus Creek, Gowanda, NY (100.0 km)
Johnson Creek, Kuckville, NY (103.1 km)
Oak Orchard Creek, Kent, NY (108.8 km)
Sandy Creek, North Hamlin, NY (131.1 km)
Allegheny River, Salamanca, NY (138.7 km)
Walnut Creek, Erie, PA (142.9 km)
Northrup Creek, North Greece, NY (144.8 km)
Erie Canal, Rochester, NY (153.0 km)
Genesee River, Rochester, NY (155.6 km)
Allen Creek, Brighton, NY (162.9 km)
Weather for Grimsby, Ontario
Current Weather
Humidity: 73%
Heat Index: -4.6°C
Feels Like: -13°C
Wind: WNW 14.9 mph
Wind Gusts: 0 kph
Wind Chill: -13°C
Dew Point: -8.7°C
Chance of Precipitation: 10%
Precipitation: 0 in
Cloud Cover: 0%
Visibility: -12.2 km
UV Index: 0
Five Day Weather Forecast

Tue
H: -2°C
L: -8°C

Wed
H: -1°C
L: -7°C

Thu
H: -6°C
L: -9°C

Fri
H: -4°C
L: -8°C

Sat
H: -3°C
L: -5°C
Air Quality
Nitrogen Dioxide: 2.35 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 79 μg/m3
Astronomical
Sun Transit: 12:20 AM
Sunset: 4:52 PM
Daylight: 9 hrs 2 mins
Moon Transit: 8:56 PM
Moonset: 3:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%
Best Times for Fishing or Hunting
Major Periods
9:24 AM - 11:54 AM8:26 PM - 10:56 PM
Minor Periods
12:41 AM - 2:11 PM3:04 AM - 4:34 AM
Action Rating: 2 out of 5
yellow warning - wind - in effect
Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/
Effective: Mon December 29, 2025, 12:53 PM
Expires: Tue December 30, 2025, 3:02 AM
Strong winds expected today. What: Strong southwesterly and northwesterly wind gusts of 70 to 90 km/h. When: Today. Easing tonight. Additional information. Strong southwesterly winds will become northwesterly this afternoon. Areas with significant ice build-up from freezing rain will be most vulnerable. ### Utility outages are possible. Significant disruptions to services and travel are likely. Significant damage to buildings and/or trees is possible. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
Secure loose objects. Stay away from fallen power lines. Prepare for some disruptions to transportation, services, and utilities.
yellow warning - snow squall - in effect
Service Notice – November 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is tentatively set for deployment November 26, 2025. Data changes will appear in CAP following this deployment, 2) the alert name ‘extreme cold warning’ will change to ‘cold warning’, 3) two Public zone names will change in Saskatchewan, 4) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard continues, there will be changes coming to CAP and 5) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – novembre 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est provisoirement prévue pour un déploiement le 26 novembre 2025. Des changements aux données apparaîtront dans le PAC suite à ce déploiement, 2) le nom de l’alerte ‘avertissement de froid extrême’ changera pour ‘avertissement de froid’, 3) deux noms de zones publiques seront modifiés en Saskatchewan, 4) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique se poursuit. Des changements seront également apportés au PAC et 5) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/
Effective: Mon December 29, 2025, 11:17 AM
Expires: Tue December 30, 2025, 3:17 AM
Snow squalls and blowing snow today into Tuesday. What: Near zero visibility at times in local blowing snow. Total local snowfall amounts of 10 to 20 cm. When: This afternoon through Tuesday morning. Additional information: An brief, intense snow squall is expected early this afternoon along a cold front. A quick 5 cm of snow is expected from this snow squall. Lake effect snow squalls off Lake Huron will develop behind the cold front. Widespread blowing snow and blizzard conditions will be the primary concern as northwesterly wind gusts of 70 to 90 km/h are expected today. ### Travel may be extremely hazardous. Road closures are possible. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm. For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
Prepare for quickly changing and deteriorating travel conditions.
Weather Forecast
Average Temperature: -5°C
Average Humidity: 69%
Wind: 27.7 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 3.56 μg/m3
Sulphur Dioxide: 1.97 μg/m3
Ozone: 78.2 μg/m3
Astronomical
Sun Transit: 12:20 AM
Sunset: 4:52 PM
Daylight: 9 hrs 2 mins
Moon Transit: 8:56 PM
Moonset: 3:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%
Best Times for Fishing or Hunting
Major Periods
9:24 AM - 11:54 AM8:26 PM - 10:56 PM
Minor Periods
12:41 AM - 2:11 PM3:04 AM - 4:34 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: -4.1°C
Average Humidity: 76%
Wind: 21.9 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 7.17 μg/m3
Sulphur Dioxide: 3.17 μg/m3
Ozone: 72.92 μg/m3
Astronomical
Sun Transit: 12:21 AM
Sunset: 4:53 PM
Daylight: 9 hrs 3 mins
Moon Transit: 9:58 PM
Moonset: 4:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%
Best Times for Fishing or Hunting
Major Periods
10:24 AM - 12:54 AM9:28 PM - 11:58 PM
Minor Periods
1:21 PM - 2:51 PM4:27 AM - 5:57 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: -7.2°C
Average Humidity: 63%
Wind: 23.9 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 5.53 μg/m3
Sulphur Dioxide: 2.63 μg/m3
Ozone: 76.72 μg/m3
Astronomical
Sun Transit: 12:21 AM
Sunset: 4:54 PM
Daylight: 9 hrs 3 mins
Moon Transit: 11:05 PM
Moonset: 6:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%
Best Times for Fishing or Hunting
Major Periods
11:30 AM - 2:00 PM12:00 AM - 12:00 AM
Minor Periods
2:14 PM - 3:44 PM5:47 AM - 7:17 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: -5.9°C
Average Humidity: 73%
Wind: 19.2 mph
UV Index: 1
Air Quality
Nitrogen Dioxide: 5.88 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 74.46 μg/m3
Astronomical
Sun Transit: 12:22 AM
Sunset: 4:54 PM
Daylight: 9 hrs 4 mins
Moon Transit: 12:00 AM
Moonset: 7:28 AM
Moon Phase: Full
Moon Illumination: 99.2%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:36 AM - 3:06 PM
Minor Periods
3:21 PM - 4:51 PM6:58 AM - 8:28 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: -4.3°C
Average Humidity: 78%
Wind: 16.1 mph
UV Index: 2
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:22 AM
Sunset: 4:55 PM
Daylight: 9 hrs 5 mins
Moon Transit: 12:11 AM
Moonset: 8:25 AM
Moon Phase: Full
Moon Illumination: 99.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM1:41 PM - 4:11 PM
Minor Periods
4:38 PM - 6:08 PM7:55 AM - 9:25 AM
Action Rating: 5 out of 5
