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: 240 feet / 73 meters
Nearest Address:
Grimsby, ON
Niagara Regional District County
GPS Coordinates: 43.25, -79.53
Nearby Water Temperatures
Eighteenmile Creek, Burt, NY (41.2 mi)Buffalo River, Buffalo, NY (41.3 mi)
Erie Canal, Lockport, NY (42.7 mi)
Oak Orchard Creek, Medina, NY (57.8 mi)
Oak Orchard Creek, Kenyonville, NY (61.4 mi)
Cattaraugus Creek, Gowanda, NY (62.2 mi)
Johnson Creek, Kuckville, NY (64.1 mi)
Oak Orchard Creek, Kent, NY (67.6 mi)
Sandy Creek, North Hamlin, NY (81.4 mi)
Allegheny River, Salamanca, NY (86.2 mi)
Walnut Creek, Erie, PA (88.8 mi)
Northrup Creek, North Greece, NY (90.0 mi)
Erie Canal, Rochester, NY (95.1 mi)
Genesee River, Rochester, NY (96.7 mi)
Allen Creek, Brighton, NY (101.2 mi)
Weather for Grimsby, Ontario
Current Weather

Humidity: 87%
Feels Like: -3.8°C
Wind: WSW 24.2 mph
Wind Gusts: 32.1 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 1 mi
UV Index: 0.8
Five Day Weather Forecast

Fri
H: 6°C
L: -4°C

Sat
H: 2°C
L: -5°C

Sun
H: -1°C
L: -5°C

Mon
H: -1°C
L: -6°C

Tue
H: 4°C
L: -1°C
Air Quality
Nitrogen Dioxide: 5.05 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 64 μg/m3
Astronomical
Sun Transit: 12:15 AM
Sunset: 4:45 PM
Daylight: 8 hrs 59 mins
Moon Transit: 11:56 AM
Moonset: 4:03 PM
Moon Phase: New
Moon Illumination: 1.1%
Best Times for Fishing or Hunting
Major Periods
12:27 AM - 2:57 AM11:26 AM - 1:56 PM
Minor Periods
3:33 PM - 5:03 PM7:20 AM - 8:50 AM
Action Rating: 5 out of 5
special weather statement 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: Thu December 18, 2025, 11:53 PM
Expires: Fri December 19, 2025, 3:53 PM
Rain tonight, followed by rapidly falling temperatures Friday. What: Total rainfall amounts of 10 to 20 mm. Rapidly falling temperatures resulting in surfaces becoming icy and slippery. When: Tonight through Friday afternoon. Additional information: Rain will overspread the area tonight before changing over to flurries early Friday morning as temperatures rapidly fall below the freezing mark. This will be the result of a strong cold front passing through the area. Roads and walkways may become icy and slippery. Travel may become difficult at times. For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit Ontario.ca/floods for the latest details. ### 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.
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: Thu December 18, 2025, 11:26 PM
Expires: Fri December 19, 2025, 3:26 PM
Strong winds expected Friday. What: Southwesterly to westerly winds gusting to 90 km/h. When: Friday morning through Friday evening. Additional information: The strongest wind gusts are expected to be near the lakeshore. Winds will diminish through Friday evening. ### Local utility outages 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.
Secure loose objects.
Weather Forecast
Average Temperature: 2.3°C
Average Humidity: 81%
Wind: 31.1 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 7.18 μg/m3
Sulphur Dioxide: 3.8 μg/m3
Ozone: 66.48 μg/m3
Astronomical
Sun Transit: 12:15 AM
Sunset: 4:45 PM
Daylight: 8 hrs 59 mins
Moon Transit: 11:56 AM
Moonset: 4:03 PM
Moon Phase: New
Moon Illumination: 1.1%
Best Times for Fishing or Hunting
Major Periods
12:27 AM - 2:57 AM11:26 AM - 1:56 PM
Minor Periods
3:33 PM - 5:03 PM7:20 AM - 8:50 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: -1.6°C
Average Humidity: 73%
Wind: 27.1 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 8.18 μg/m3
Sulphur Dioxide: 4.05 μg/m3
Ozone: 68.4 μg/m3
Astronomical
Sun Transit: 12:15 AM
Sunset: 4:45 PM
Daylight: 8 hrs 59 mins
Moon Transit: 12:49 AM
Moonset: 4:59 PM
Moon Phase: New
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
1:19 AM - 3:49 AM12:19 AM - 2:49 PM
Minor Periods
4:29 PM - 5:59 PM8:12 AM - 9:42 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: -1.8°C
Average Humidity: 75%
Wind: 26.6 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 8.56 μg/m3
Sulphur Dioxide: 3.09 μg/m3
Ozone: 63 μg/m3
Astronomical
Sun Transit: 12:16 AM
Sunset: 4:46 PM
Daylight: 8 hrs 59 mins
Moon Transit: 1:41 PM
Moonset: 6:02 PM
Moon Phase: New
Moon Illumination: 1.5%
Best Times for Fishing or Hunting
Major Periods
2:12 AM - 4:42 AM1:11 PM - 3:41 PM
Minor Periods
5:32 PM - 7:02 PM8:55 AM - 10:25 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: -3.3°C
Average Humidity: 67%
Wind: 20.1 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 8.9 μg/m3
Sulphur Dioxide: 3.16 μg/m3
Ozone: 65.56 μg/m3
Astronomical
Sun Transit: 12:16 AM
Sunset: 4:46 PM
Daylight: 8 hrs 59 mins
Moon Transit: 2:31 PM
Moonset: 7:09 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.5%
Best Times for Fishing or Hunting
Major Periods
3:03 AM - 5:33 AM2:01 PM - 4:31 PM
Minor Periods
6:39 PM - 8:09 PM9:30 AM - 11:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 1.4°C
Average Humidity: 73%
Wind: 23 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 18.56 μg/m3
Sulphur Dioxide: 6.07 μg/m3
Ozone: 47.23 μg/m3
Astronomical
Sun Transit: 12:17 AM
Sunset: 4:47 PM
Daylight: 8 hrs 59 mins
Moon Transit: 3:19 PM
Moonset: 8:19 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.7%
Best Times for Fishing or Hunting
Major Periods
3:52 AM - 6:22 AM2:49 PM - 5:19 PM
Minor Periods
7:49 PM - 9:19 PM9:59 AM - 11:29 AM
Action Rating: 2 out of 5
