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

View Nearby Locations     View All Ontario Locations     View Locations Near Me

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

3.4°C
Light rain
Light rain
0.9°C
2°C
72%
NE 9.4 kph
18 kph
-3.1°C
1.7°C
0.37 mm
0%
6 km
1011 mbar
0

Five Day Weather Forecast

Heavy rain
Wed
H: 4°C
L: 2°C
Moderate or heavy snow showers
Thu
H: 6°C
L: -3°C
Heavy snow
Fri
H: 3°C
L: -2°C
Patchy moderate snow
Sat
H: 1°C
L: -3°C
Blizzard
Sun
H: 1°C
L: -2°C

Air Quality

PM2.5: 9.05 μg/m3
PM10: 9.25 μg/m3
Carbon Monoxide: 235.85 μg/m3
Nitrogen Dioxide: 13.35 μg/m3
Sulphur Dioxide: 5.35 μg/m3
Ozone: 49 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 1:28 PM
Sunset: 7:20 PM
Daylight: 11 hrs 43 mins
Moonrise: 3:17 AM
Moon Transit: 7:24 AM
Moonset: 11:29 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
8:46 PM - 11:16 PM

Minor Periods

10:59 AM - 12:29 AM
2:47 AM - 4:17 AM

Action Rating: 2 out of 5

yellow warning - rainfall - 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 10, 2026, 1:02 PM
Expires: Wed March 11, 2026, 5:02 AM

Rain, heavy at times is expected. The saturated or frozen ground will have little ability to absorb this rainfall. What: Rainfall amounts of 20 to 40 mm. Locally higher amounts are possible in areas that receive thunderstorms. When: Beginning tonight and lasting through Wednesday. Additional information: A series of low pressure systems will lead to significant rainfall across parts of southern Ontario. 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. ### Water will likely pool on roads and in low-lying areas. 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.

Don't drive through flooded roadways. Avoid low-lying areas. Watch for washouts near rivers, creeks and culverts.


Wednesday, March 11, 2026

Weather Forecast

Heavy rain
4.3°C
1.6°C
3.1°C
97%
105.6 mm
87%
0%
37.8 kph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 9.16 μg/m3
PM10: 9.27 μg/m3
Carbon Monoxide: 285.17 μg/m3
Nitrogen Dioxide: 23.07 μg/m3
Sulphur Dioxide: 5.48 μg/m3
Ozone: 34.4 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 1:28 PM
Sunset: 7:20 PM
Daylight: 11 hrs 43 mins
Moonrise: 3:17 AM
Moon Transit: 7:24 AM
Moonset: 11:29 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:54 AM - 9:24 AM
8:46 PM - 11:16 PM

Minor Periods

10:59 AM - 12:29 AM
2:47 AM - 4:17 AM

Action Rating: 2 out of 5

Thursday, March 12, 2026

Weather Forecast

Moderate or heavy snow showers
5.5°C
-2.5°C
0.6°C
68%
3.14 mm
75%
9%
42.8 kph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 3.04 μg/m3
PM10: 3.38 μg/m3
Carbon Monoxide: 223.77 μg/m3
Nitrogen Dioxide: 8.28 μg/m3
Sulphur Dioxide: 3.37 μg/m3
Ozone: 80.04 μg/m3

Astronomical

Sunrise: 7:35 AM
Sun Transit: 12:00 AM
Sunset: 7:21 PM
Daylight: 11 hrs 46 mins
Moonrise: 4:10 AM
Moon Transit: 8:16 AM
Moonset: 12:24 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:46 AM - 10:16 AM
12:00 AM - 12:00 AM

Minor Periods

11:54 AM - 1:24 PM
3:40 AM - 5:10 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Heavy snow
3.1°C
-1.7°C
-0.3°C
82%
9.43 mm
68%
23%
53.3 kph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.66 μg/m3
PM10: 6.6 μg/m3
Carbon Monoxide: 240.76 μg/m3
Nitrogen Dioxide: 13.07 μg/m3
Sulphur Dioxide: 5.19 μg/m3
Ozone: 74.4 μg/m3

Astronomical

Sunrise: 7:33 AM
Sun Transit: 12:00 AM
Sunset: 7:22 PM
Daylight: 11 hrs 49 mins
Moonrise: 4:54 AM
Moon Transit: 9:07 AM
Moonset: 1:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Minor Periods

12:56 AM - 2:26 PM
4:24 AM - 5:54 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Patchy moderate snow
0.7°C
-2.7°C
-1.1°C
75%
0.97 mm
83%
19%
49.7 kph
1


Air Quality

AQI: 1 - Good
PM2.5: 3.17 μg/m3
PM10: 3.91 μg/m3
Carbon Monoxide: 176.67 μg/m3
Nitrogen Dioxide: 4.64 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 92.54 μg/m3

Astronomical

Sunrise: 7:32 AM
Sun Transit: 12:00 AM
Sunset: 7:23 PM
Daylight: 11 hrs 52 mins
Moonrise: 5:30 AM
Moon Transit: 9:58 AM
Moonset: 2:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:28 AM - 11:58 AM

Minor Periods

2:03 PM - 3:33 PM
5:00 AM - 6:30 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Blizzard
1.1°C
-2.3°C
-0.5°C
97%
15.75 mm
52%
55%
34.2 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: 7:30 AM
Sun Transit: 12:00 AM
Sunset: 7:24 PM
Daylight: 11 hrs 54 mins
Moonrise: 6:00 AM
Moon Transit: 10:47 AM
Moonset: 3:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:17 AM - 12:47 AM

Minor Periods

3:13 PM - 4:43 PM
5:30 AM - 7:00 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.

Webcams Near Grimsby, ON

Sponsored Content