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, ONStation 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

Five Day Weather Forecast

Sun
H: 0°C
L: -3°C

Mon
H: 2°C
L: -3°C

Tue
H: 4°C
L: -0°C

Wed
H: 4°C
L: -5°C

Thu
H: -6°C
L: -8°C
Air Quality
Nitrogen Dioxide: 5.55 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 73 μg/m3
Astronomical
Sun Transit: 12:26 AM
Sunset: 5:04 PM
Daylight: 9 hrs 15 mins
Moon Transit: 6:41 AM
Moonset: 11:45 AM
Moon Phase: Last Quarter
Moon Illumination: 35.3%
Best Times for Fishing or Hunting
Major Periods
6:11 AM - 8:41 AM7:59 PM - 10:29 PM
Minor Periods
11:15 AM - 12:45 AM12:58 AM - 2:28 AM
Action Rating: 2 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: Sat January 10, 2026, 9:59 AM
Expires: Sun January 11, 2026, 1:59 AM
Freezing rain possible late this afternoon and evening. What: Locally icy and slippery conditions. Up to 2 mm of ice accretion or build-up possible. When: Late this afternoon and evening. Additional information: Precipitation is forecast to begin as snow or rain but may transition to a period of freezing rain before ending later this evening or overnight. Areas south of Highway 401 are likely to receive little to no icing as temperatures are expected to remain just above the freezing mark. Roads and walkways may become icy and slippery. Be very careful if walking or driving. ### 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.
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: Sat January 10, 2026, 4:44 PM
Expires: Sun January 11, 2026, 2:02 AM
Freezing rain possible late this afternoon and evening. What: Locally icy and slippery conditions. Up to 2 mm of ice accretion or build-up possible. When: Late this afternoon and evening. Additional information: Precipitation is forecast to begin as snow or rain but may transition to a period of freezing rain before ending later this evening or overnight. Areas south of Highway 401 are likely to receive little to no icing as temperatures are expected to remain just above the freezing mark. Roads and walkways may become icy and slippery. Be very careful if walking or driving. ### 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.
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: Sat January 10, 2026, 6:38 PM
Expires: Sun January 11, 2026, 2:03 AM
Freezing rain possible this evening. What: Locally icy and slippery conditions. Up to 2 mm of ice accretion or build-up possible. When: This evening. Additional information: Precipitation is forecast to begin as snow or rain but may transition to a period of freezing rain before ending later this evening. Areas near and south of Highway 401 are likely to receive little to no icing as temperatures are expected to remain above the freezing mark. Roads and walkways may become icy and slippery. Be very careful if walking or driving. ### 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.
Wind Advisory issued January 10 at 1:13PM EST until January 11 at 1:00PM EST by NWS Buffalo NY
Effective: Sat January 10, 2026, 1:13 PM
Expires: Sun January 11, 2026, 2:00 AM
* WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Erie, Niagara, Orleans, Monroe, Genesee, Wyoming, and Chautauqua Counties. * WHEN...From 8 PM this evening to 1 PM EST Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.
Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects.
Wind Advisory issued January 11 at 1:04AM EST until January 11 at 1:00PM EST by NWS Buffalo NY
Effective: Sun January 11, 2026, 1:04 AM
Expires: Sun January 11, 2026, 1:00 PM
* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph. * WHERE...Erie, Niagara, Orleans, Monroe, Genesee, Wyoming, and Chautauqua Counties. * WHEN...Until 1 PM EST this afternoon. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.
Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects.
Winter Weather Advisory issued January 10 at 1:11PM EST until January 12 at 1:00AM EST by NWS Buffalo NY
Effective: Sat January 10, 2026, 1:11 PM
Expires: Sun January 11, 2026, 1:15 AM
* WHAT...Lake effect snow expected. Total snow accumulations 3 to 6 inches in the most persistent lake snows. The highest amounts will be across the Boston Hills and Chautauqua Ridge. Winds gusting as high as 45 mph will cause blowing and drifting snow. * WHERE...Wyoming, Chautauqua, Cattaraugus, and Southern Erie Counties. * WHEN...From 7 AM Sunday to 1 AM EST Monday. * IMPACTS...Plan on slippery road conditions. Gusty winds will down tree branches and cause isolated power outages.
Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media.
Winter Weather Advisory issued January 11 at 1:03AM EST until January 12 at 1:00AM EST by NWS Buffalo NY
Effective: Sun January 11, 2026, 1:03 AM
Expires: Sun January 11, 2026, 3:15 PM
* WHAT...Lake effect snow expected. Total snow accumulations 3 to 5 inches in the most persistent lake snows. The highest amounts will be across the Boston Hills and Chautauqua Ridge. Winds gusting as high as 45 mph will also produce blowing and drifting snow. * WHERE...Wyoming, Chautauqua, Cattaraugus, and Southern Erie Counties. * WHEN...From 7 AM this morning to 1 AM EST Monday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow will significantly reduce visibility. Gusty winds will down tree branches and cause isolated power outages.
Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media.
Weather Forecast
Air Quality
Nitrogen Dioxide: 10.65 μg/m3
Sulphur Dioxide: 3.46 μg/m3
Ozone: 58.92 μg/m3
Astronomical
Sun Transit: 12:26 AM
Sunset: 5:04 PM
Daylight: 9 hrs 15 mins
Moon Transit: 6:41 AM
Moonset: 11:45 AM
Moon Phase: Last Quarter
Moon Illumination: 35.3%
Best Times for Fishing or Hunting
Major Periods
6:11 AM - 8:41 AM7:59 PM - 10:29 PM
Minor Periods
11:15 AM - 12:45 AM12:58 AM - 2:28 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.98 μg/m3
Sulphur Dioxide: 3.15 μg/m3
Ozone: 64.96 μg/m3
Astronomical
Sun Transit: 12:26 AM
Sunset: 5:05 PM
Daylight: 9 hrs 16 mins
Moon Transit: 7:24 AM
Moonset: 12:09 AM
Moon Phase: Last Quarter
Moon Illumination: 25.0%
Best Times for Fishing or Hunting
Major Periods
6:54 AM - 9:24 AM8:43 PM - 11:13 PM
Minor Periods
11:39 AM - 1:09 PM2:03 AM - 3:33 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 13.39 μg/m3
Sulphur Dioxide: 5.32 μg/m3
Ozone: 46.52 μg/m3
Astronomical
Sun Transit: 12:26 AM
Sunset: 5:06 PM
Daylight: 9 hrs 18 mins
Moon Transit: 8:10 AM
Moonset: 12:38 AM
Moon Phase: Waning Crescent
Moon Illumination: 15.9%
Best Times for Fishing or Hunting
Major Periods
7:40 AM - 10:10 AM12:00 AM - 12:00 AM
Minor Periods
12:08 AM - 1:38 PM3:08 AM - 4:38 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.34 μg/m3
Sulphur Dioxide: 4.08 μg/m3
Ozone: 48 μg/m3
Astronomical
Sun Transit: 12:27 AM
Sunset: 5:07 PM
Daylight: 9 hrs 19 mins
Moon Transit: 9:00 AM
Moonset: 1:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.5%
Best Times for Fishing or Hunting
Major Periods
8:30 AM - 11:00 AM12:00 AM - 12:00 AM
Minor Periods
12:43 AM - 2:13 PM4:12 AM - 5:42 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:27 AM
Sunset: 5:08 PM
Daylight: 9 hrs 21 mins
Moon Transit: 9:50 AM
Moonset: 1:57 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:20 AM - 11:50 AM
Minor Periods
1:27 PM - 2:57 PM5:12 AM - 6:42 AM
Action Rating: 2 out of 5
