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

-0.2°C
Light snow
Light snow
-3.4°C
-0.6°C
99%
SSW 9.4 kph
14.7 kph
-4.7°C
-1.2°C
0.62 mm
0%
5 km
1018 mbar
0

Five Day Weather Forecast

Mist
Sun
H: 1°C
L: -2°C
Moderate or heavy snow showers
Mon
H: 0°C
L: -8°C
Partly Cloudy
Tue
H: -5°C
L: -15°C
Blizzard
Wed
H: 1°C
L: -7°C
Partly Cloudy
Thu
H: -2°C
L: -6°C

Air Quality

AQI: 1 - Good
PM2.5: 11.15 μg/m3
PM10: 11.15 μg/m3
Carbon Monoxide: 266.85 μg/m3
Nitrogen Dioxide: 18.65 μg/m3
Sulphur Dioxide: 5.55 μg/m3
Ozone: 34 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:31 AM
Sunset: 5:58 PM
Daylight: 10 hrs 53 mins
Moonrise: 9:13 AM
Moon Transit: 4:43 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 29.1%

Best Times for Fishing or Hunting

Major Periods

5:13 AM - 7:43 AM
4:13 PM - 6:43 PM

Minor Periods

8:43 AM - 10:13 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

yellow advisory - freezing drizzle - 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: Sat February 21, 2026, 6:54 PM
Expires: Sun February 22, 2026, 1:59 AM

Areas of freezing drizzle continue. What: Periods of freezing drizzle leading to icy surfaces. When: This evening. Additional Information: An area of freezing drizzle has developed across eastern portions of the Golden Horseshoe and may last through parts of this evening. ### Roads, walkways, and other surfaces will likely become icy and slippery. Icy surfaces will likely form and could be difficult to detect. There is risk of injury due to slips and falls. 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.


yellow advisory - freezing drizzle - 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: Sat February 21, 2026, 6:54 PM
Expires: Sun February 22, 2026, 1:59 AM

Areas of freezing drizzle continue. ### Roads, walkways, and other surfaces will likely become icy and slippery. Icy surfaces will likely form and could be difficult to detect. There is risk of injury due to slips and falls. 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.


Winter Weather Advisory issued February 21 at 7:27PM EST until February 22 at 4:00AM EST by NWS Buffalo NY

Effective: Sat February 21, 2026, 7:27 PM
Expires: Sun February 22, 2026, 4:00 AM

* WHAT...Areas of freezing drizzle. Ice accumulations of a glaze to a hundredth of an inch. * WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, and Oswego Counties. * WHEN...Until 4 AM EST Sunday. * IMPACTS...Roads and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions.

Periods of freezing drizzle will result in slippery surfaces. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, be careful on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. Submit ice reports through our website or social media.


Winter Weather Advisory issued February 22 at 12:26AM EST until February 22 at 4:00AM EST by NWS Buffalo NY

Effective: Sun February 22, 2026, 12:26 AM
Expires: Sun February 22, 2026, 4:00 AM

* WHAT...Areas of freezing drizzle. Ice accumulations of a glaze to a hundredth of an inch. * WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, and Oswego Counties. * WHEN...Until 4 AM EST early this morning. * IMPACTS...Roads and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions.

Periods of snow, sleet or freezing rain will result in slippery roads and limited visibilities. Slow down and use caution while driving. Submit ice reports through our website or social media. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, be careful on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.


Sunday, February 22, 2026

Weather Forecast

Mist
1°C
-2.1°C
-0.5°C
94%
2.58 mm
65%
48%
20.5 kph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 6.84 μg/m3
PM10: 6.85 μg/m3
Carbon Monoxide: 322.65 μg/m3
Nitrogen Dioxide: 19.02 μg/m3
Sulphur Dioxide: 5.17 μg/m3
Ozone: 41.32 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:31 AM
Sunset: 5:58 PM
Daylight: 10 hrs 53 mins
Moonrise: 9:13 AM
Moon Transit: 4:43 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 29.1%

Best Times for Fishing or Hunting

Major Periods

5:13 AM - 7:43 AM
4:13 PM - 6:43 PM

Minor Periods

8:43 AM - 10:13 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, February 23, 2026

Weather Forecast

Moderate or heavy snow showers
0.3°C
-8.3°C
-2.5°C
87%
4.08 mm
62%
15%
33.8 kph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 5.58 μg/m3
PM10: 5.68 μg/m3
Carbon Monoxide: 352.17 μg/m3
Nitrogen Dioxide: 16.83 μg/m3
Sulphur Dioxide: 5.6 μg/m3
Ozone: 57.08 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:31 AM
Sunset: 6:00 PM
Daylight: 10 hrs 56 mins
Moonrise: 9:46 AM
Moon Transit: 5:39 PM
Moonset: 12:28 AM
Moon Phase: First Quarter
Moon Illumination: 39.8%

Best Times for Fishing or Hunting

Major Periods

6:07 AM - 8:37 AM
5:09 PM - 7:39 PM

Minor Periods

9:16 AM - 10:46 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, February 24, 2026

Weather Forecast

Partly Cloudy
-5.1°C
-14.5°C
-9.4°C
67%
0 mm
0%
0%
28.4 kph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 3.16 μg/m3
PM10: 3.29 μg/m3
Carbon Monoxide: 203.25 μg/m3
Nitrogen Dioxide: 7.06 μg/m3
Sulphur Dioxide: 3.51 μg/m3
Ozone: 76.48 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:31 AM
Sunset: 6:01 PM
Daylight: 10 hrs 59 mins
Moonrise: 10:27 AM
Moon Transit: 6:39 PM
Moonset: 1:46 AM
Moon Phase: First Quarter
Moon Illumination: 51.1%

Best Times for Fishing or Hunting

Major Periods

7:06 AM - 9:36 AM
6:09 PM - 8:39 PM

Minor Periods

9:57 AM - 11:27 AM
1:16 AM - 2:46 AM

Action Rating: 4 out of 5

Wednesday, February 25, 2026

Weather Forecast

Blizzard
1.4°C
-7.2°C
-1.4°C
91%
6.59 mm
69%
37%
30.6 kph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 6.61 μg/m3
PM10: 6.81 μg/m3
Carbon Monoxide: 242.96 μg/m3
Nitrogen Dioxide: 8.55 μg/m3
Sulphur Dioxide: 4.17 μg/m3
Ozone: 73.52 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

Partly Cloudy
-2.1°C
-5.8°C
-4.2°C
80%
0.04 mm
0%
16%
31.3 kph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.7 μg/m3
PM10: 6.96 μg/m3
Carbon Monoxide: 227.41 μg/m3
Nitrogen Dioxide: 11.05 μg/m3
Sulphur Dioxide: 3.73 μg/m3
Ozone: 82.62 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

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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