Water Temperature of Lake Ontario in Grimsby, Ontario

Current Water Temperature

-0.9°C

Measurement Time: Friday, December 5, 2025, 1:00 PM EST

Temperature Locations

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Local Points of Interest

Hamilton, ON; Toronto, ON

Lake Ontario

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

-0.5°C
Blowing snow
Blowing snow
-7.8°C
-3°C
89%
SSW 36.4 kph
55.9 kph
-10.2°C
-4.3°C
3.02 mm
0%
0 km
1000 mbar
0

Five Day Weather Forecast

Moderate or heavy snow showers
Wed
H: 2°C
L: -5°C
Overcast
Thu
H: -2°C
L: -6°C
Partly Cloudy
Fri
H: -1°C
L: -7°C
Overcast
Sat
H: 4°C
L: -1°C
Moderate snow
Sun
H: -5°C
L: -10°C

Air Quality

PM2.5: 14.75 μg/m3
PM10: 15.25 μg/m3
Carbon Monoxide: 215.85 μg/m3
Nitrogen Dioxide: 12.05 μg/m3
Sulphur Dioxide: 4.55 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:31 AM
Sunset: 6:02 PM
Daylight: 11 hrs 2 mins
Moonrise: 11:20 AM
Moon Transit: 7:42 PM
Moonset: 3:00 AM
Moon Phase: First Quarter
Moon Illumination: 62.3%

Best Times for Fishing or Hunting

Major Periods

8:08 AM - 10:38 AM
7:12 PM - 9:42 PM

Minor Periods

10:50 AM - 12:20 AM
2:30 AM - 4:00 AM

Action Rating: 2 out of 5

special weather statement 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 February 24, 2026, 10:44 AM
Expires: Wed February 25, 2026, 2:44 AM

Snow expected tonight. What: Snowfall amounts of 5 to 10 cm. Reduced visibility in areas of heavier snow. When: Beginning this evening and ending overnight. Additional information: Snow associated with an Alberta Clipper will sweep across the area this evening and tonight. Highest snowfall amounts are expected to be along the Oak Ridges Moraine. Roads and walkways will likely be difficult to navigate due to accumulating snow. Prepare for deteriorating travel conditions. Allow extra time for travel. ### 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.


special weather statement 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 February 24, 2026, 4:11 PM
Expires: Wed February 25, 2026, 7:03 AM

Snow expected tonight. What: Snowfall amounts of 5 to 10 cm. Reduced visibility in areas of heavier snow. When: Beginning this evening and ending overnight. Additional information: Snow associated with an Alberta Clipper will sweep across the area this evening and tonight. Highest snowfall amounts are expected to be along the Oak Ridges Moraine. Roads and walkways will likely be difficult to navigate due to accumulating snow. Prepare for deteriorating travel conditions. Allow extra time for travel. ### 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.


Wednesday, February 25, 2026

Weather Forecast

Moderate or heavy snow showers
1.5°C
-4.9°C
-2°C
83%
5.32 mm
75%
14%
37.4 kph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 7.69 μg/m3
PM10: 7.96 μg/m3
Carbon Monoxide: 204.21 μg/m3
Nitrogen Dioxide: 8.41 μg/m3
Sulphur Dioxide: 4.01 μg/m3
Ozone: 72.4 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:31 AM
Sunset: 6:02 PM
Daylight: 11 hrs 2 mins
Moonrise: 11:20 AM
Moon Transit: 7:42 PM
Moonset: 3:00 AM
Moon Phase: First Quarter
Moon Illumination: 62.3%

Best Times for Fishing or Hunting

Major Periods

8:08 AM - 10:38 AM
7:12 PM - 9:42 PM

Minor Periods

10:50 AM - 12:20 AM
2:30 AM - 4:00 AM

Action Rating: 2 out of 5

Thursday, February 26, 2026

Weather Forecast

Overcast
-2.3°C
-6.3°C
-4.1°C
85%
0 mm
0%
0%
22.3 kph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 4.01 μg/m3
PM10: 4.13 μg/m3
Carbon Monoxide: 256.13 μg/m3
Nitrogen Dioxide: 7.68 μg/m3
Sulphur Dioxide: 3.04 μg/m3
Ozone: 74.08 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:30 AM
Sunset: 6:04 PM
Daylight: 11 hrs 4 mins
Moonrise: 12:26 AM
Moon Transit: 8:44 PM
Moonset: 4:04 AM
Moon Phase: First Quarter
Moon Illumination: 72.9%

Best Times for Fishing or Hunting

Major Periods

9:11 AM - 11:41 AM
8:14 PM - 10:44 PM

Minor Periods

11:56 AM - 1:26 PM
3:34 AM - 5:04 AM

Action Rating: 2 out of 5

Friday, February 27, 2026

Weather Forecast

Partly Cloudy
-0.6°C
-6.7°C
-2.6°C
80%
0.04 mm
0%
6%
35.6 kph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 10.56 μg/m3
PM10: 10.97 μg/m3
Carbon Monoxide: 473.22 μg/m3
Nitrogen Dioxide: 12.71 μg/m3
Sulphur Dioxide: 4.65 μg/m3
Ozone: 73.08 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 12:30 AM
Sunset: 6:05 PM
Daylight: 11 hrs 7 mins
Moonrise: 1:40 PM
Moon Transit: 9:44 PM
Moonset: 4:56 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

10:12 AM - 12:42 AM
9:14 PM - 11:44 PM

Minor Periods

1:10 PM - 2:40 PM
4:26 AM - 5:56 AM

Action Rating: 2 out of 5

Saturday, February 28, 2026

Weather Forecast

Overcast
4.2°C
-1.1°C
2.4°C
82%
0.08 mm
0%
4%
41.4 kph
0


Air Quality

AQI: 1 - Good
PM2.5: 10.27 μg/m3
PM10: 10.62 μg/m3
Carbon Monoxide: 229 μg/m3
Nitrogen Dioxide: 11.14 μg/m3
Sulphur Dioxide: 4.99 μg/m3
Ozone: 79.15 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 12:30 AM
Sunset: 6:06 PM
Daylight: 11 hrs 10 mins
Moonrise: 2:58 PM
Moon Transit: 10:39 PM
Moonset: 5:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

11:09 AM - 1:39 PM
12:00 AM - 12:00 AM

Minor Periods

2:28 PM - 3:58 PM
5:05 AM - 6:35 AM

Action Rating: 3 out of 5

Sunday, March 1, 2026

Weather Forecast

Moderate snow
-5.1°C
-10°C
-5.8°C
73%
1.16 mm
84%
24%
24.5 kph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 12:30 AM
Sunset: 6:07 PM
Daylight: 11 hrs 13 mins
Moonrise: 4:15 PM
Moon Transit: 11:30 PM
Moonset: 6:07 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

12:02 AM - 2:32 PM
12:00 AM - 12:00 AM

Minor Periods

3:45 PM - 5:15 PM
5:37 AM - 7:07 AM

Action Rating: 3 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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