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

Tue
H: 23°C
L: 12°C

Wed
H: 6°C
L: 1°C

Thu
H: 8°C
L: 2°C

Fri
H: 22°C
L: 7°C

Sat
H: 10°C
L: 2°C
Air Quality
Nitrogen Dioxide: 13.15 μg/m3
Sulphur Dioxide: 3.65 μg/m3
Ozone: 71 μg/m3
Astronomical
Sun Transit: 1:22 PM
Sunset: 7:43 PM
Daylight: 12 hrs 42 mins
Moon Transit: 12:00 AM
Moonset: 6:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM1:15 PM - 3:45 PM
Minor Periods
6:03 PM - 7:33 PM5:47 AM - 7:17 AM
Action Rating: 4 out of 5
squall warning ended
Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Tue March 31, 2026, 2:54 PM
Expires: Tue March 31, 2026, 3:54 PM
Squalls have weakened or moved out of the area. ###
squall warning in effect
Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Tue March 31, 2026, 2:02 PM
Expires: Tue March 31, 2026, 5:01 PM
Squalls with wind gusts up to 35 knots, frequent lightning, hail up to 2 centimetres and poor to very poor visibility in thunderstorms heavy at times are expected or occurring in the area. A thunderstorm is located south of Port Dover moving east at 40 knots. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.
squall warning in effect
Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) 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 – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) 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: Tue March 31, 2026, 2:02 PM
Expires: Tue March 31, 2026, 5:01 PM
Squalls with wind gusts up to 35 knots, frequent lightning, hail up to 2 centimetres and poor to very poor visibility in thunderstorms heavy at times are expected or occurring in the area. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Vessels without lightning protection should make their way to shore immediately. Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.
Weather Forecast
Air Quality
Nitrogen Dioxide: 12.94 μg/m3
Sulphur Dioxide: 4.01 μg/m3
Ozone: 72.04 μg/m3
Astronomical
Sun Transit: 1:22 PM
Sunset: 7:43 PM
Daylight: 12 hrs 42 mins
Moon Transit: 12:00 AM
Moonset: 6:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.6%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM1:15 PM - 3:45 PM
Minor Periods
6:03 PM - 7:33 PM5:47 AM - 7:17 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 15.82 μg/m3
Sulphur Dioxide: 5.59 μg/m3
Ozone: 68.84 μg/m3
Astronomical
Sun Transit: 1:21 PM
Sunset: 7:45 PM
Daylight: 12 hrs 45 mins
Moon Transit: 12:40 AM
Moonset: 6:36 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:10 AM - 2:40 AM1:57 PM - 4:27 PM
Minor Periods
7:10 PM - 8:40 PM6:06 AM - 7:36 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 14.63 μg/m3
Sulphur Dioxide: 3.63 μg/m3
Ozone: 66.56 μg/m3
Astronomical
Sun Transit: 1:21 PM
Sunset: 7:46 PM
Daylight: 12 hrs 48 mins
Moon Transit: 1:22 AM
Moonset: 6:55 AM
Moon Phase: Full
Moon Illumination: 99.5%
Best Times for Fishing or Hunting
Major Periods
12:52 AM - 3:22 AM2:40 PM - 5:10 PM
Minor Periods
8:17 PM - 9:47 PM6:25 AM - 7:55 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 12.41 μg/m3
Sulphur Dioxide: 4.21 μg/m3
Ozone: 66.64 μg/m3
Astronomical
Sun Transit: 1:21 PM
Sunset: 7:47 PM
Daylight: 12 hrs 51 mins
Moon Transit: 2:05 AM
Moonset: 7:15 AM
Moon Phase: Full
Moon Illumination: 96.6%
Best Times for Fishing or Hunting
Major Periods
1:35 AM - 4:05 AM3:23 PM - 5:53 PM
Minor Periods
9:23 PM - 10:53 PM6:45 AM - 8:15 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 17.93 μg/m3
Sulphur Dioxide: 5.89 μg/m3
Ozone: 59.77 μg/m3
Astronomical
Sun Transit: 1:21 PM
Sunset: 7:48 PM
Daylight: 12 hrs 53 mins
Moon Transit: 2:50 AM
Moonset: 7:39 AM
Moon Phase: Full
Moon Illumination: 91.3%
Best Times for Fishing or Hunting
Major Periods
2:20 AM - 4:50 AM4:09 PM - 6:39 PM
Minor Periods
10:30 PM - 12:00 PM7:09 AM - 8:39 AM
Action Rating: 4 out of 5
