Weather for Grimsby, Ontario
Current Weather
Humidity: 76%
Feels Like: 28.3°C
Wind: SW 5.4 mph
Wind Gusts: 10.9 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0
Five Day Weather Forecast
Thu
H: 30°C
L: 18°C
Fri
H: 32°C
L: 20°C
Sat
H: 34°C
L: 21°C
Sun
H: 30°C
L: 24°C
Mon
H: 27°C
L: 22°C
Air Quality
Nitrogen Dioxide: 49.4 μg/m3
Sulphur Dioxide: 8.14 μg/m3
Ozone: 46 μg/m3
Astronomical
Sun Transit: 1:23 PM
Sunset: 8:59 PM
Daylight: 15 hrs 11 mins
Moon Transit: 12:51 AM
Moonset: 5:03 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:21 AM - 2:51 AM2:15 PM - 4:45 PM
Minor Periods
8:57 PM - 10:27 PM4:33 AM - 6:03 AM
Action Rating: 5 out of 5
alerte d'orages violents 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: Thu July 10, 2025, 3:52 PM
Expires: Thu July 10, 2025, 6:51 PM
At 3:52 p.m. EDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing strong wind gusts, up to nickel size hail and heavy rain. This severe thunderstorm is located 6 kilometres east of Mount Joy, moving southeast at 20 km/h. Hazard: 70 km/h wind gusts and nickel size hail. Locations impacted include: Pickering, Ajax, Green River, Atha Road, Whitevale, Cherrywood, Clarkes Hollow, Dixie, Brougham, Brock Road, Deckers Hill, Greenwood and Kinsale. ### Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.
Take immediate cover if a thunderstorm approaches. If outside, protect yourself from flying debris and hail. Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.
alerte d'orages violents 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: Thu July 10, 2025, 3:52 PM
Expires: Thu July 10, 2025, 6:51 PM
At 3:52 p.m. EDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing strong wind gusts, up to nickel size hail and heavy rain. ### Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.
Take immediate cover if a thunderstorm approaches. If outside, protect yourself from flying debris and hail. Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.
alerte d'orages violents 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: Thu July 10, 2025, 3:52 PM
Expires: Thu July 10, 2025, 6:51 PM
At 3:52 p.m. EDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing strong wind gusts, up to nickel size hail and heavy rain. This severe thunderstorm is located 6 kilometres east of Mount Joy, moving southeast at 20 km/h. Hazard: 70 km/h wind gusts and nickel size hail. Locations impacted include: Pickering, Ajax, Green River, Atha Road, Whitevale, Cherrywood, Clarkes Hollow, Dixie, Brougham, Brock Road, Deckers Hill, Greenwood and Kinsale. ### Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are expected to produce damaging hail, wind or rain.
Take immediate cover if a thunderstorm approaches. If outside, protect yourself from flying debris and hail. Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.
Weather Forecast
Average Temperature: 23.1°C
Average Humidity: 86%
Wind: 6.3 mph
UV Index: 2.3
Air Quality
Nitrogen Dioxide: 42.52 μg/m3
Sulphur Dioxide: 10.49 μg/m3
Ozone: 109.32 μg/m3
Astronomical
Sun Transit: 1:23 PM
Sunset: 8:59 PM
Daylight: 15 hrs 11 mins
Moon Transit: 12:51 AM
Moonset: 5:03 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:21 AM - 2:51 AM2:15 PM - 4:45 PM
Minor Periods
8:57 PM - 10:27 PM4:33 AM - 6:03 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 24.1°C
Average Humidity: 84%
Wind: 9.6 mph
UV Index: 2.3
Air Quality
Nitrogen Dioxide: 39.35 μg/m3
Sulphur Dioxide: 10.76 μg/m3
Ozone: 96.2 μg/m3
Astronomical
Sun Transit: 1:23 PM
Sunset: 8:58 PM
Daylight: 15 hrs 10 mins
Moon Transit: 1:46 AM
Moonset: 6:11 AM
Moon Phase: Full
Moon Illumination: 97.4%
Best Times for Fishing or Hunting
Major Periods
1:16 AM - 3:46 AM3:09 PM - 5:39 PM
Minor Periods
9:32 PM - 11:02 PM5:41 AM - 7:11 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 26.7°C
Average Humidity: 80%
Wind: 15.4 mph
UV Index: 2.6
Air Quality
Nitrogen Dioxide: 38.49 μg/m3
Sulphur Dioxide: 8.47 μg/m3
Ozone: 120.44 μg/m3
Astronomical
Sun Transit: 1:23 PM
Sunset: 8:58 PM
Daylight: 15 hrs 8 mins
Moon Transit: 2:38 AM
Moonset: 7:23 AM
Moon Phase: Full
Moon Illumination: 92.7%
Best Times for Fishing or Hunting
Major Periods
2:08 AM - 4:38 AM4:00 PM - 6:30 PM
Minor Periods
10:01 PM - 11:31 PM6:53 AM - 8:23 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 26.4°C
Average Humidity: 78%
Wind: 12.1 mph
UV Index: 1.7
Air Quality
Nitrogen Dioxide: 20.88 μg/m3
Sulphur Dioxide: 9.68 μg/m3
Ozone: 124.92 μg/m3
Astronomical
Sun Transit: 1:24 PM
Sunset: 8:57 PM
Daylight: 15 hrs 7 mins
Moon Transit: 3:28 AM
Moonset: 8:37 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.7%
Best Times for Fishing or Hunting
Major Periods
2:58 AM - 5:28 AM4:49 PM - 7:19 PM
Minor Periods
10:25 PM - 11:55 PM8:07 AM - 9:37 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 24.1°C
Average Humidity: 75%
Wind: 12.3 mph
UV Index: 1.2
Air Quality
Nitrogen Dioxide: 29.61 μg/m3
Sulphur Dioxide: 3.97 μg/m3
Ozone: 83.08 μg/m3
Astronomical
Sun Transit: 1:24 PM
Sunset: 8:57 PM
Daylight: 15 hrs 5 mins
Moon Transit: 4:16 AM
Moonset: 9:50 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.9%
Best Times for Fishing or Hunting
Major Periods
3:46 AM - 6:16 AM5:36 PM - 8:06 PM
Minor Periods
12:00 AM - 12:00 AM9:20 AM - 10:50 AM
Action Rating: 3 out of 5