Current Conditions

St. Catharines, Ontario

69°F20°C

Drizzle

Wind

W 5 mph8 km/h

Humidity

90%

Cloud Cover

90%

As of Thursday, August 13, 2026 at 7:59 AM EDT

Today's Outlook

Day

Overcast and warm, with a high of 79°F26°C and morning low of 69°F20°C. Light wind from the W around 6 mph9 km/h.

Night

Partly cloudy, with a low around 68°F20°C. Light wind from the WNW around 6 mph9 km/h. 12% chance of drizzle.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 79°F26°C	Low 68°F20°C	Precip 0.01 in0.2 mm12%	Cloud 65%	Wind W 6 mph9 km/h	Thursday: Overcast and warm, with a high of 79°F26°C and morning low of 69°F20°C. Light wind from the W around 6 mph9 km/h. Thursday Night: Partly cloudy, with a low around 68°F20°C. Light wind from the WNW around 6 mph9 km/h. 12% chance of drizzle.
Partly Cloudy	High 78°F26°C	Low 68°F20°C	Precip 0 in0 mm—	Cloud 55%	Wind N 4 mph6 km/h	Friday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 69°F21°C. Light wind from the N around 3 mph5 km/h. Friday Night: Partly cloudy, with a low around 68°F20°C. Light wind from the N around 5 mph7 km/h.
Clear	High 77°F25°C	Low 68°F20°C	Precip 0 in0.1 mm2%	Cloud 35%	Wind ENE 8 mph13 km/h	Saturday: Partly cloudy and warm, with a high of 77°F25°C and morning low of 69°F21°C. Breezy from the ENE at 9 to 10 mph14 to 16 km/h. Saturday Night: Partly cloudy, with a low around 68°F20°C. Breezy from the ENE at 8 to 9 mph12 to 15 km/h.
Light Rain	High 76°F25°C	Low 69°F20°C	Precip 0.21 in5.4 mm57%	Cloud 76%	Wind SSE 6 mph10 km/h	Sunday: Overcast and warm, with a high of 76°F25°C and morning low of 70°F21°C. Breezy from the SSW at 6 to 7 mph10 to 11 km/h. 57% chance of light rain throughout the day. Humid. Sunday Night: Mostly cloudy, with a low around 69°F20°C. Breezy from the ESE at 7 to 8 mph11 to 13 km/h. 56% chance of light rain throughout the night.
Drizzle	High 75°F24°C	Low 69°F20°C	Precip 0.07 in1.7 mm34%	Cloud 59%	Wind NNW 7 mph11 km/h	Monday: Mostly cloudy and warm, with a high of 75°F24°C and morning low of 70°F21°C. Breezy from the NNW at 7 to 8 mph12 to 13 km/h. 34% chance of drizzle throughout the day. Humid. Monday Night: Mostly cloudy, with a low around 69°F20°C. Breezy from the NNW at 7 to 8 mph11 to 12 km/h. 29% chance of drizzle overnight.
Partly Cloudy	High 76°F25°C	Low 65°F19°C	Precip 0.01 in0.2 mm6%	Cloud 42%	Wind W 6 mph10 km/h	Tuesday: Partly cloudy and warm, with a high of 76°F25°C and morning low of 66°F19°C. Light wind from the WNW around 5 mph7 km/h. Tuesday Night: Partly cloudy, with a low around 65°F19°C. Breezy from the W at 7 to 8 mph12 to 13 km/h.
Light Rain	High 75°F24°C	Low 68°F20°C	Precip 0.12 in3 mm47%	Cloud 76%	Wind SW 9 mph15 km/h	Wednesday: Overcast and warm, with a high of 75°F24°C and morning low of 69°F21°C. Breezy from the SW at 10 to 11 mph16 to 18 km/h. 37% chance of light rain throughout the day. Wednesday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 47% chance of light rain in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	79°F26°C	68°F20°C	0.01 in0.2 mm· 12%	65%	Drizzle	W 6 mph9 km/h
DayOvercast and warm, with a high of 79°F26°C and morning low of 69°F20°C. Light wind from the W around 6 mph9 km/h. NightPartly cloudy, with a low around 68°F20°C. Light wind from the WNW around 6 mph9 km/h. 12% chance of drizzle.
	FridayAug 14	78°F26°C	68°F20°C	0 in0 mm· —	55%	Partly Cloudy	N 4 mph6 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 69°F21°C. Light wind from the N around 3 mph5 km/h. NightPartly cloudy, with a low around 68°F20°C. Light wind from the N around 5 mph7 km/h.
	SaturdayAug 15	77°F25°C	68°F20°C	0 in0.1 mm· 2%	35%	Clear	ENE 8 mph13 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 69°F21°C. Breezy from the ENE at 9 to 10 mph14 to 16 km/h. NightPartly cloudy, with a low around 68°F20°C. Breezy from the ENE at 8 to 9 mph12 to 15 km/h.
	SundayAug 16	76°F25°C	69°F20°C	0.21 in5.4 mm· 57%	76%	Light Rain	SSE 6 mph10 km/h
DayOvercast and warm, with a high of 76°F25°C and morning low of 70°F21°C. Breezy from the SSW at 6 to 7 mph10 to 11 km/h. 57% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 69°F20°C. Breezy from the ESE at 7 to 8 mph11 to 13 km/h. 56% chance of light rain throughout the night.
	MondayAug 17	75°F24°C	69°F20°C	0.07 in1.7 mm· 34%	59%	Drizzle	NNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 70°F21°C. Breezy from the NNW at 7 to 8 mph12 to 13 km/h. 34% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 69°F20°C. Breezy from the NNW at 7 to 8 mph11 to 12 km/h. 29% chance of drizzle overnight.
	TuesdayAug 18	76°F25°C	65°F19°C	0.01 in0.2 mm· 6%	42%	Partly Cloudy	W 6 mph10 km/h
DayPartly cloudy and warm, with a high of 76°F25°C and morning low of 66°F19°C. Light wind from the WNW around 5 mph7 km/h. NightPartly cloudy, with a low around 65°F19°C. Breezy from the W at 7 to 8 mph12 to 13 km/h.
	WednesdayAug 19	75°F24°C	68°F20°C	0.12 in3 mm· 47%	76%	Light Rain	SW 9 mph15 km/h
DayOvercast and warm, with a high of 75°F24°C and morning low of 69°F21°C. Breezy from the SW at 10 to 11 mph16 to 18 km/h. 37% chance of light rain throughout the day. NightMostly cloudy, with a low around 68°F20°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 47% chance of light rain in the evening.
	ThursdayAug 20	73°F23°C	67°F19°C	0.19 in4.8 mm· 45%	54%	Showers	WNW 10 mph16 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 68°F20°C. Breezy from the WNW at 10 mph16 km/h. 35% chance of showers throughout the day. NightMostly cloudy, with a low around 67°F19°C. Breezy from the WNW at 9 to 10 mph15 to 16 km/h. 45% chance of showers throughout the night.
	FridayAug 21	73°F23°C	63°F17°C	0.09 in2.2 mm· 12%	43%	Showers	NW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 64°F18°C. Breezy from the NW at 7 mph11 km/h. 12% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Breezy from the NW at 7 to 8 mph12 to 13 km/h. 12% chance of showers throughout the night.
	SaturdayAug 22	74°F23°C	64°F18°C	0.07 in1.8 mm· 13%	39%	Drizzle	W 7 mph11 km/h
DayPartly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the W at 7 mph11 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Breezy from the W at 7 mph11 km/h. 12% chance of drizzle throughout the night.
	SundayAug 23	74°F23°C	64°F18°C	0.06 in1.6 mm· 14%	42%	Drizzle	W 7 mph11 km/h
DayPartly cloudy and warm, with a high of 74°F23°C and morning low of 65°F18°C. Breezy from the W at 7 to 8 mph11 to 12 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Breezy from the W at 7 mph11 km/h. 14% chance of drizzle throughout the night.
	MondayAug 24	75°F24°C	65°F18°C	0.08 in2 mm· 14%	42%	Drizzle	WSW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 66°F19°C. Breezy from the WSW at 8 mph12 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Breezy from the WSW at 7 mph12 km/h. 14% chance of drizzle throughout the night.
	TuesdayAug 25	74°F24°C	65°F18°C	0.08 in2 mm· 18%	46%	Drizzle	W 7 mph12 km/h
DayPartly cloudy and warm, with a high of 74°F24°C and morning low of 66°F19°C. Breezy from the W at 7 to 8 mph12 to 12 km/h. 18% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Breezy from the W at 7 mph11 km/h. 14% chance of drizzle throughout the night.
	WednesdayAug 26	75°F24°C	65°F19°C	0.08 in2 mm· 14%	43%	Drizzle	WNW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 66°F19°C. Breezy from the WNW at 7 to 8 mph12 to 13 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F19°C. Breezy from the WNW at 7 to 8 mph11 to 12 km/h. 14% chance of drizzle throughout the night.
	ThursdayAug 27	73°F23°C	65°F18°C	0.1 in2.6 mm· 20%	46%	Drizzle	NNW 8 mph12 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 65°F18°C. Breezy from the NW at 8 mph12 km/h. 20% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Breezy from the NNW at 8 mph12 km/h. 18% chance of drizzle throughout the night.

Nearby Cities

Thorold4 mi7 km Niagara-on-the-Lake10 mi16 km Niagara Falls10 mi16 km Welland13 mi21 km Grimsby16 mi26 km Port Colborne19 mi30 km

About This Forecast

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Coordinates: 43.1713°N, 79.2427°W·Elevation: 102m·Timezone: America/Toronto·Population: 136,803