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Weather in Brockville, Ontario, Canada

Now
56 °F

Cool.


Feels Like: 56 °F
Forecast: 75 / 51 °F
Wind: 1 mph from South

Location: Grenadier Island
Current Time: Sep 10, 2025 at 2:20:42 am
Latest Report: Sep 10, 2025 at 2:00 am
Visibility: N/A
Pressure: 30.25 "Hg
Humidity: 82%
Dew Point: 50 °F

Upcoming 5 hours

Now 3:00 am 4:00 am 5:00 am 6:00 am 7:00 am
56 °F 53 °F 53 °F 53 °F 52 °F 52 °F

See more hour-by-hour weather

Forecast for the next 48 hours

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  Wednesday Thursday
  Night Morning Afternoon Evening Night Morning Afternoon
Forecast
Temperature 53 °F 59 °F 74 °F 62 °F 56 °F 61 °F 73 °F
Overcast. Overcast. Mostly cloudy. Scatt­erred clouds. Partly cloudy. Partly cloudy. Mostly sunny.
Feels Like 52 °F 59 °F 77 °F 62 °F 56 °F 61 °F 77 °F
Wind Speed 5 mph 5 mph 7 mph 4 mph 3 mph 3 mph 8 mph
Wind Direction SSE
SSW
SW
SW
S
NNW
N
Humidity 88% 73% 46% 73% 86% 78% 52%
Dew Point 50 °F 51 °F 52 °F 53 °F 51 °F 54 °F 54 °F
Visibility 8 mi 9 mi 10 mi 9 mi 7 mi 7 mi 10 mi
Probability of Precipitation 0% 0% 0% 0% 0% 0% 0%
Amount of Rain 0.00" 0.00" 0.00" 0.00" 0.00" 0.00" 0.00"
Amount of Snow 0.00" 0.00" 0.00" 0.00" 0.00" 0.00" 0.00"
* Updated Tuesday, September 9, 2025 9:42:50 pm Brockville time - Weather by CustomWeather, © 2025

14 day forecast, day-by-day Hour-by-hour forecast for next week

Yesterday's weather

Cool. 75 / 48 °F
Humidity: 75%. Wind: 2 mph from Southwest

More weather last week

Currently at nearby stations

64 °F

Upper Rideau Lake: (31 mi)

Overcast. (3 hours ago)

53 °F

Fort Drum / Wheeler-Sack U. S. Army Airfield: (37 mi)

Clear.

46 °F

Watertown International Airport: (44 mi)

Clear.

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Forecast for the next 2 weeks

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Sun Mon Tue Wed Thu Fri Sat
7
8
9

View historic weather

25
26
27

Detailed forecast for 14 days