Current Conditions

Peterborough, Ontario

70°F21°C
Partly Cloudy

Wind

WSW 5 mph8 km/h

Humidity

94%

Cloud Cover

98%

As of Wednesday, September 2, 2026 at 9:21 PM EDT

Today's Outlook

Night

Mostly cloudy, with a low around 65°F18°C. Light wind from the WNW around 6 mph9 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 79°F26°CLow 65°F18°CPrecip 0.01 in0.2 mm4%Cloud 59%Wind WNW 7 mph11 km/hThursday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 66°F19°C. Breezy from the WNW at 8 to 11 mph13 to 17 km/h. Thursday Night: Mostly cloudy, with a low around 65°F18°C. Light wind from the WNW around 6 mph9 km/h.
Partly CloudyHigh 76°F25°CLow 61°F16°CPrecip 0 in0.1 mm3%Cloud 48%Wind NNW 6 mph10 km/hFriday: Mostly cloudy and warm, with a high of 76°F25°C and morning low of 62°F17°C. Breezy from the NW at 6 to 8 mph10 to 13 km/h. Friday Night: Partly cloudy, with a low around 61°F16°C. Light wind from the NNW around 6 mph10 km/h.
DrizzleHigh 73°F23°CLow 58°F15°CPrecip 0.01 in0.2 mm11%Cloud 40%Wind N 7 mph10 km/hSaturday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 60°F16°C. Breezy from the NNE at 7 to 8 mph12 to 13 km/h. 11% chance of drizzle in the afternoon. Saturday Night: Mostly clear, with a low around 58°F15°C. Light wind from the N around 6 mph9 km/h.
ClearHigh 75°F24°CLow 56°F13°CPrecip 0 in0.1 mm6%Cloud 33%Wind NE 4 mph7 km/hSunday: Partly cloudy and warm, with a high of 75°F24°C and morning low of 58°F14°C. Light wind from the ENE around 4 mph7 km/h. Sunday Night: Mostly clear, with a low around 56°F13°C. Light wind from the NE around 4 mph7 km/h.
Partly CloudyHigh 76°F25°CLow 55°F13°CPrecip 0 in0.1 mm2%Cloud 54%Wind W 4 mph6 km/hMonday: Mostly cloudy and warm, with a high of 76°F25°C and morning low of 57°F14°C. Light wind from the WNW around 4 mph6 km/h. Monday Night: Partly cloudy, with a low around 55°F13°C. Light wind from the W around 4 mph6 km/h.
Partly CloudyHigh 73°F23°CLow 58°F14°CPrecip 0.03 in0.7 mm9%Cloud 79%Wind ESE 5 mph8 km/hTuesday: Overcast and warm, with a high of 73°F23°C and morning low of 58°F15°C. Light wind from the ESE around 5 mph8 km/h. Tuesday Night: Mostly cloudy, with a low around 58°F14°C. Light wind from the ESE around 5 mph9 km/h.
Light RainHigh 78°F26°CLow 62°F17°CPrecip 0.14 in3.6 mm32%Cloud 72%Wind SSW 8 mph13 km/hWednesday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 63°F17°C. Breezy from the SSW at 9 to 10 mph14 to 16 km/h. 32% chance of light rain throughout the day. Wednesday Night: Mostly cloudy, with a low around 62°F17°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 30% chance of showers throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdaySep 379°F26°C65°F18°C0.01 in0.2 mm· 4%59%Partly CloudyWNW 7 mph11 km/h
FridaySep 476°F25°C61°F16°C0 in0.1 mm· 3%48%Partly CloudyNNW 6 mph10 km/h
SaturdaySep 573°F23°C58°F15°C0.01 in0.2 mm· 11%40%DrizzleN 7 mph10 km/h
SundaySep 675°F24°C56°F13°C0 in0.1 mm· 6%33%ClearNE 4 mph7 km/h
MondaySep 776°F25°C55°F13°C0 in0.1 mm· 2%54%Partly CloudyW 4 mph6 km/h
TuesdaySep 873°F23°C58°F14°C0.03 in0.7 mm· 9%79%Partly CloudyESE 5 mph8 km/h
WednesdaySep 978°F26°C62°F17°C0.14 in3.6 mm· 32%72%Light RainSSW 8 mph13 km/h
ThursdaySep 1076°F25°C65°F18°C0.17 in4.4 mm· 30%66%ShowersW 8 mph14 km/h
FridaySep 1172°F22°C60°F16°C0.11 in2.7 mm· 21%56%ShowersWNW 7 mph12 km/h
SaturdaySep 1271°F22°C56°F14°C0.13 in3.3 mm· 21%57%ShowersWSW 7 mph11 km/h
SundaySep 1372°F22°C57°F14°C0.11 in2.7 mm· 18%60%ShowersSW 7 mph11 km/h
MondaySep 1473°F23°C60°F15°C0.1 in2.6 mm· 22%55%DrizzleWSW 7 mph12 km/h
TuesdaySep 1573°F23°C58°F15°C0.12 in3.1 mm· 21%52%ShowersW 7 mph11 km/h
WednesdaySep 1671°F21°C56°F14°C0.11 in2.7 mm· 20%52%ShowersW 7 mph11 km/h
ThursdaySep 1769°F21°C55°F13°C0.08 in2.1 mm· 16%50%DrizzleW 7 mph11 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: 44.3001°N, 78.3162°W·Elevation: 188m·Timezone: America/Toronto·Population: 85,807