Current Conditions

Saint John, New Brunswick

60°F16°C
Light Rain

Wind

ESE 6 mph9 km/h

Humidity

81%

Cloud Cover

97%

As of Wednesday, September 2, 2026 at 9:48 PM ADT

Today's Outlook

Night

Overcast, with a low around 58°F14°C. Breezy from the SSE at 10 to 13 mph15 to 21 km/h. 91% chance of light rain in the evening.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Light RainHigh 63°F17°CLow 58°F14°CPrecip 0.24 in6 mm91%Cloud 98%Wind SSE 10 mph16 km/hThursday: Overcast and mild, with a high of 63°F17°C and morning low of 58°F14°C. Breezy from the SSE at 10 to 12 mph17 to 19 km/h. 76% chance of light rain throughout the day. Thursday Night: Overcast, with a low around 58°F14°C. Breezy from the SSE at 10 to 13 mph15 to 21 km/h. 91% chance of light rain in the evening.
Light RainHigh 66°F19°CLow 61°F16°CPrecip 0.35 in9 mm86%Cloud 90%Wind ENE 7 mph12 km/hFriday: Overcast and mild, with a high of 66°F19°C and morning low of 61°F16°C. Light wind from the NE around 6 mph9 km/h. 86% chance of light rain throughout the day. Friday Night: Overcast, with a low around 61°F16°C. Breezy from the ESE at 9 to 11 mph14 to 18 km/h. 85% chance of light rain throughout the night.
Light RainHigh 63°F17°CLow 58°F15°CPrecip 0.21 in5.3 mm69%Cloud 85%Wind NNE 16 mph26 km/hSaturday: Overcast and mild, with a high of 62°F17°C. Windy from the NNE at 18 to 19 mph28 to 31 km/h. 59% chance of light rain throughout the day. Saturday Night: Overcast, with a low around 58°F15°C. Windy from the NNE at 15 to 18 mph24 to 30 km/h. 69% chance of light rain throughout the night.
Light RainHigh 61°F16°CLow 56°F13°CPrecip 0.17 in4.4 mm50%Cloud 92%Wind N 17 mph27 km/hSunday: Overcast and mild, with a high of 61°F16°C and morning low of 56°F13°C. Windy from the N at 17 to 18 mph28 to 29 km/h. 50% chance of light rain throughout the day. Sunday Night: Overcast, with a low around 56°F13°C. Windy from the N at 16 to 17 mph25 to 28 km/h. 50% chance of light rain throughout the night.
DrizzleHigh 67°F20°CLow 53°F12°CPrecip 0.01 in0.2 mm13%Cloud 39%Wind NNW 9 mph15 km/hMonday: Partly cloudy and mild, with a high of 67°F20°C and morning low of 53°F12°C. Breezy from the N at 9 to 11 mph15 to 18 km/h. Monday Night: Partly cloudy, with a low around 54°F12°C. Breezy from the NNW at 9 to 12 mph15 to 19 km/h. 13% chance of drizzle overnight.
DrizzleHigh 64°F18°CLow 57°F14°CPrecip 0.06 in1.6 mm29%Cloud 56%Wind NW 9 mph14 km/hTuesday: Mostly cloudy and mild, with a high of 64°F18°C and morning low of 57°F14°C. Breezy from the NW at 9 mph15 km/h. 29% chance of drizzle throughout the day. Tuesday Night: Mostly cloudy, with a low around 58°F14°C. Breezy from the WNW at 8 mph13 km/h. 18% chance of drizzle in the evening.
DrizzleHigh 62°F17°CLow 53°F11°CPrecip 0.05 in1.2 mm20%Cloud 64%Wind SW 9 mph14 km/hWednesday: Mostly cloudy and mild, with a high of 62°F17°C and morning low of 53°F11°C. Breezy from the SW at 8 to 10 mph13 to 16 km/h. Wednesday Night: Mostly cloudy, with a low around 54°F12°C. Breezy from the SW at 10 to 12 mph16 to 19 km/h. 20% chance of drizzle in the evening.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdaySep 363°F17°C58°F14°C0.24 in6 mm· 91%98%Light RainSSE 10 mph16 km/h
FridaySep 466°F19°C61°F16°C0.35 in9 mm· 86%90%Light RainENE 7 mph12 km/h
SaturdaySep 563°F17°C58°F15°C0.21 in5.3 mm· 69%85%Light RainNNE 16 mph26 km/h
SundaySep 661°F16°C56°F13°C0.17 in4.4 mm· 50%92%Light RainN 17 mph27 km/h
MondaySep 767°F20°C53°F12°C0.01 in0.2 mm· 13%39%DrizzleNNW 9 mph15 km/h
TuesdaySep 864°F18°C57°F14°C0.06 in1.6 mm· 29%56%DrizzleNW 9 mph14 km/h
WednesdaySep 962°F17°C53°F11°C0.05 in1.2 mm· 20%64%DrizzleSW 9 mph14 km/h
ThursdaySep 1066°F19°C59°F15°C0.25 in6.3 mm· 41%78%Light RainSW 13 mph20 km/h
FridaySep 1166°F19°C59°F15°C0.13 in3.3 mm· 25%55%ShowersWNW 10 mph16 km/h
SaturdaySep 1263°F17°C55°F13°C0.1 in2.5 mm· 15%53%ShowersWNW 9 mph15 km/h
SundaySep 1364°F18°C55°F13°C0.11 in2.7 mm· 18%53%ShowersSW 9 mph15 km/h
MondaySep 1464°F18°C55°F13°C0.1 in2.5 mm· 19%57%DrizzleSW 10 mph16 km/h
TuesdaySep 1565°F18°C56°F14°C0.08 in2.1 mm· 20%61%DrizzleSW 9 mph15 km/h
WednesdaySep 1664°F18°C56°F13°C0.12 in3.1 mm· 23%58%DrizzleSW 9 mph15 km/h
ThursdaySep 1764°F18°C55°F13°C0.13 in3.3 mm· 20%60%ShowersWSW 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: 45.2708°N, 66.0562°W·Elevation: 30m·Timezone: America/Moncton·Population: 71,808