Water Temperature of Lake Ontario in Grimsby, Ontario

Current Water Temperature

16.3°C

Measurement Time: Wednesday, September 10, 2025, 7:00 AM EDT

Temperature Locations

View Nearby Locations View All Ontario Locations View Locations Near Me

Local Points of Interest

Hamilton, ON; Toronto, ON

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

18.3°C

Conditions: Cloudy
Humidity: 82%
Feels Like: 18.3°C
Wind: SW 5.8 mph
Wind Gusts: 8.1 mph

Pressure: 30.21 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 1.9

Five Day Weather Forecast

Wed
H: 24°C
L: 12°C

Thu
H: 24°C
L: 11°C

Fri
H: 24°C
L: 13°C

Sat
H: 23°C
L: 14°C

Sun
H: 23°C
L: 15°C

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups

PM2.5: 20.17 μg/m3

PM10: 20.17 μg/m3

Carbon Monoxide: 482.85 μg/m3
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 16.65 μg/m3
Ozone: 153 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:14 PM
Sunset: 7:36 PM
Daylight: 12 hrs 44 mins

Moonrise: 8:53 PM
Moon Transit: 3:17 AM
Moonset: 10:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

2:47 AM - 5:17 AM
4:40 PM - 7:10 PM

Minor Periods

8:23 PM - 9:53 PM
9:53 AM - 11:23 AM

Action Rating: 3 out of 5

avis de brouillard en vigueur

Service Notice – June 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 planned for deployment for later in 2025. Data changes will appear in CAP-CP upon this deployment, 2) SAME event codes for a few alert types are updated and 3) 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 – juin 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 prévue d’être déployée plus tard en 2025. Des changements aux données apparaîtront dans le PC-PAC lors de ce déploiement, 2) des codes d’événement MSSC pour quelques types d’alerte ont été mis à jour et 3) 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: Wed September 10, 2025, 7:17 AM
Expires: Wed September 10, 2025, 11:01 AM

Near zero visibility in fog is expected or occurring. Fog is expected to dissipate this morning. ### Visibility may be significantly and suddenly reduced to near zero. 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.