Current Conditions

Port Colborne, Ontario

72°F22°C
Showers

Wind

SW 8 mph12 km/h

Humidity

85%

Cloud Cover

62%

As of Wednesday, August 12, 2026 at 7:52 PM EDT

Today's Outlook

Night

Mostly cloudy, with a low around 71°F21°C. Breezy from the WSW at 8 mph12 km/h. 72% chance of showers throughout the night.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ShowersHigh 74°F24°CLow 71°F21°CPrecip 0.22 in5.5 mm72%Cloud 63%Wind WSW 9 mph14 km/hWednesday: Mostly cloudy and warm, with a high of 74°F24°C. Breezy from the WSW at 10 to 11 mph16 to 17 km/h. 69% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 71°F21°C. Breezy from the WSW at 8 mph12 km/h. 72% chance of showers throughout the night.
ShowersHigh 78°F26°CLow 69°F20°CPrecip 0.03 in0.8 mm44%Cloud 61%Wind W 7 mph11 km/hThursday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 69°F21°C. Breezy from the W at 7 to 9 mph11 to 14 km/h. Thursday Night: Partly cloudy, with a low around 69°F20°C. Breezy from the W at 7 to 8 mph12 to 13 km/h. 44% chance of showers overnight.
Partly CloudyHigh 78°F26°CLow 69°F21°CPrecip 0 in0.1 mm3%Cloud 48%Wind NW 5 mph7 km/hFriday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 70°F21°C. Light wind from the WNW around 4 mph6 km/h. Friday Night: Partly cloudy, with a low around 69°F21°C. Light wind from the NNW around 5 mph8 km/h.
ClearHigh 78°F26°CLow 70°F21°CPrecip 0.01 in0.2 mm3%Cloud 36%Wind ENE 8 mph12 km/hSaturday: Partly cloudy and warm, with a high of 78°F26°C and morning low of 70°F21°C. Breezy from the NE at 7 to 8 mph11 to 13 km/h. Saturday Night: Partly cloudy, with a low around 70°F21°C. Breezy from the ENE at 8 to 10 mph13 to 16 km/h.
Light RainHigh 77°F25°CLow 72°F22°CPrecip 0.29 in7.4 mm69%Cloud 78%Wind SW 9 mph15 km/hSunday: Overcast and warm, with a high of 77°F25°C. Breezy from the SW at 10 to 11 mph16 to 18 km/h. 63% chance of light rain throughout the day. Humid. Sunday Night: Mostly cloudy, with a low around 72°F22°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 69% chance of light rain throughout the night.
ShowersHigh 74°F23°CLow 70°F21°CPrecip 0.13 in3.2 mm43%Cloud 63%Wind NNW 8 mph14 km/hMonday: Mostly cloudy and warm, with a high of 74°F23°C. Breezy from the N at 9 to 11 mph15 to 17 km/h. 43% chance of showers throughout the day. Monday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the NNW at 8 to 10 mph12 to 16 km/h. 41% chance of showers overnight.
ClearHigh 76°F24°CLow 67°F19°CPrecip 0.01 in0.2 mm5%Cloud 40%Wind WNW 6 mph9 km/hTuesday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 67°F20°C. Light wind from the WNW around 5 mph8 km/h. Tuesday Night: Partly cloudy, with a low around 67°F19°C. Breezy from the WNW at 6 to 7 mph10 to 11 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdayAug 1274°F24°C71°F21°C0.22 in5.5 mm· 72%63%ShowersWSW 9 mph14 km/h
ThursdayAug 1378°F26°C69°F20°C0.03 in0.8 mm· 44%61%ShowersW 7 mph11 km/h
FridayAug 1478°F26°C69°F21°C0 in0.1 mm· 3%48%Partly CloudyNW 5 mph7 km/h
SaturdayAug 1578°F26°C70°F21°C0.01 in0.2 mm· 3%36%ClearENE 8 mph12 km/h
SundayAug 1677°F25°C72°F22°C0.29 in7.4 mm· 69%78%Light RainSW 9 mph15 km/h
MondayAug 1774°F23°C70°F21°C0.13 in3.2 mm· 43%63%ShowersNNW 8 mph14 km/h
TuesdayAug 1876°F24°C67°F19°C0.01 in0.2 mm· 5%40%ClearWNW 6 mph9 km/h
WednesdayAug 1976°F25°C70°F21°C0.09 in2.2 mm· 26%63%ShowersSW 9 mph15 km/h
ThursdayAug 2075°F24°C70°F21°C0.24 in6 mm· 41%59%ShowersWSW 11 mph18 km/h
FridayAug 2174°F24°C67°F20°C0.08 in2.1 mm· 17%47%DrizzleWNW 9 mph15 km/h
SaturdayAug 2274°F23°C67°F20°C0.11 in2.7 mm· 20%49%ShowersW 9 mph14 km/h
SundayAug 2373°F23°C67°F19°C0.11 in2.8 mm· 20%44%DrizzleW 9 mph14 km/h
MondayAug 2472°F22°C66°F19°C0.1 in2.6 mm· 19%47%ShowersW 9 mph14 km/h
TuesdayAug 2573°F23°C65°F19°C0.05 in1.3 mm· 11%36%DrizzleW 8 mph13 km/h
WednesdayAug 2672°F22°C66°F19°C0.08 in2 mm· 16%40%DrizzleW 9 mph14 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 42.9001°N, 79.2329°W·Elevation: 188m·Timezone: America/Toronto·Population: 18,306