Current Conditions

St. Thomas, Ontario

75°F24°C

Cloudy

Wind

SE 7 mph12 km/h

Humidity

62%

Cloud Cover

97%

As of Tuesday, September 8, 2026 at 1:44 PM EDT

Today's Outlook

Day

Overcast and warm, with a high of 75°F24°C and morning low of 62°F16°C. Breezy from the SE at 7 mph11 km/h.

Night

Overcast, with a low around 70°F21°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Cloudy	High 75°F24°C	Low 62°F16°C	Precip 0 in0 mm—	Cloud 92%	Wind SE 7 mph11 km/h	Tuesday: Overcast and warm, with a high of 75°F24°C and morning low of 62°F16°C. Breezy from the SE at 7 mph11 km/h. Tuesday Night: Overcast, with a low around 70°F21°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h.
Rain	High 75°F24°C	Low 71°F22°C	Precip 0.36 in9.1 mm93%	Cloud 85%	Wind SW 11 mph17 km/h	Wednesday: Overcast and warm, with a high of 75°F24°C. Breezy from the SW at 12 to 13 mph19 to 21 km/h. 93% chance of rain throughout the day. Heavy, humid air. Wednesday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. 51% chance of light rain before dawn.
Partly Cloudy	High 73°F23°C	Low 61°F16°C	Precip 0 in0.1 mm4%	Cloud 60%	Wind NW 7 mph12 km/h	Thursday: Overcast and warm, with a high of 73°F23°C and morning low of 66°F19°C. Breezy from the WNW at 8 to 9 mph12 to 15 km/h. Thursday Night: Partly cloudy, with a low around 61°F16°C. Breezy from the NW at 7 to 10 mph12 to 16 km/h.
Clear	High 73°F23°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 19%	Wind ESE 5 mph7 km/h	Friday: Mostly clear and warm, with a high of 73°F23°C and morning low of 57°F14°C. Light wind from the S around 4 mph6 km/h. Friday Night: Mostly clear, with a low around 56°F13°C. Breezy from the E at 5 to 7 mph8 to 11 km/h.
Drizzle	High 77°F25°C	Low 62°F17°C	Precip 0.03 in0.8 mm12%	Cloud 46%	Wind S 8 mph13 km/h	Saturday: Partly cloudy and warm, with a high of 77°F25°C and morning low of 64°F18°C. Breezy from the S at 9 to 10 mph14 to 15 km/h. Saturday Night: Partly cloudy, with a low around 62°F17°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 12% chance of drizzle overnight.
Drizzle	High 75°F24°C	Low 63°F17°C	Precip 0.05 in1.3 mm14%	Cloud 42%	Wind NW 8 mph14 km/h	Sunday: Partly cloudy and warm, with a high of 75°F24°C and morning low of 66°F19°C. Breezy from the WNW at 9 to 11 mph14 to 17 km/h. 14% chance of drizzle throughout the day. Sunday Night: Partly cloudy, with a low around 63°F17°C. Breezy from the NW at 8 to 9 mph13 to 14 km/h. 14% chance of drizzle overnight.
Partly Cloudy	High 70°F21°C	Low 58°F14°C	Precip 0.03 in0.8 mm8%	Cloud 55%	Wind ENE 8 mph14 km/h	Monday: Mostly cloudy and warm, with a high of 70°F21°C and morning low of 58°F14°C. Breezy from the NE at 8 mph13 km/h. Monday Night: Partly cloudy, with a low around 58°F14°C. Breezy from the ENE at 9 to 10 mph14 to 15 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 8	75°F24°C	62°F16°C	0 in0 mm· —	92%	Cloudy	SE 7 mph11 km/h
DayOvercast and warm, with a high of 75°F24°C and morning low of 62°F16°C. Breezy from the SE at 7 mph11 km/h. NightOvercast, with a low around 70°F21°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h.
	WednesdaySep 9	75°F24°C	71°F22°C	0.36 in9.1 mm· 93%	85%	Rain	SW 11 mph17 km/h
DayOvercast and warm, with a high of 75°F24°C. Breezy from the SW at 12 to 13 mph19 to 21 km/h. 93% chance of rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 71°F22°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. 51% chance of light rain before dawn.
	ThursdaySep 10	73°F23°C	61°F16°C	0 in0.1 mm· 4%	60%	Partly Cloudy	NW 7 mph12 km/h
DayOvercast and warm, with a high of 73°F23°C and morning low of 66°F19°C. Breezy from the WNW at 8 to 9 mph12 to 15 km/h. NightPartly cloudy, with a low around 61°F16°C. Breezy from the NW at 7 to 10 mph12 to 16 km/h.
	FridaySep 11	73°F23°C	56°F13°C	0 in0 mm· —	19%	Clear	ESE 5 mph7 km/h
DayMostly clear and warm, with a high of 73°F23°C and morning low of 57°F14°C. Light wind from the S around 4 mph6 km/h. NightMostly clear, with a low around 56°F13°C. Breezy from the E at 5 to 7 mph8 to 11 km/h.
	SaturdaySep 12	77°F25°C	62°F17°C	0.03 in0.8 mm· 12%	46%	Drizzle	S 8 mph13 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 64°F18°C. Breezy from the S at 9 to 10 mph14 to 15 km/h. NightPartly cloudy, with a low around 62°F17°C. Breezy from the SSE at 7 to 8 mph12 to 13 km/h. 12% chance of drizzle overnight.
	SundaySep 13	75°F24°C	63°F17°C	0.05 in1.3 mm· 14%	42%	Drizzle	NW 8 mph14 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 9 to 11 mph14 to 17 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 63°F17°C. Breezy from the NW at 8 to 9 mph13 to 14 km/h. 14% chance of drizzle overnight.
	MondaySep 14	70°F21°C	58°F14°C	0.03 in0.8 mm· 8%	55%	Partly Cloudy	ENE 8 mph14 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 58°F14°C. Breezy from the NE at 8 mph13 km/h. NightPartly cloudy, with a low around 58°F14°C. Breezy from the ENE at 9 to 10 mph14 to 15 km/h.
	TuesdaySep 15	76°F24°C	64°F18°C	0.12 in3.1 mm· 25%	65%	Showers	S 12 mph19 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 66°F19°C. Breezy from the SSW at 13 to 14 mph21 to 22 km/h. 24% chance of drizzle throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the S at 11 to 12 mph18 to 19 km/h. 25% chance of showers throughout the night.
	WednesdaySep 16	74°F24°C	65°F18°C	0.11 in2.9 mm· 27%	60%	Showers	WSW 8 mph14 km/h
DayMostly cloudy and warm, with a high of 74°F24°C and morning low of 65°F18°C. Breezy from the WSW at 8 to 9 mph13 to 14 km/h. 18% chance of drizzle throughout the day. NightMostly cloudy, with a low around 66°F19°C. Breezy from the W at 9 to 11 mph14 to 17 km/h. 27% chance of showers throughout the night.
	ThursdaySep 17	74°F23°C	63°F17°C	0.13 in3.2 mm· 23%	62%	Showers	SSE 9 mph14 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 64°F18°C. Breezy from the SSE at 9 mph14 km/h. 23% chance of drizzle throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the SE at 9 to 10 mph14 to 16 km/h. 20% chance of showers throughout the night.
	FridaySep 18	73°F23°C	64°F18°C	0.13 in3.3 mm· 23%	57%	Showers	WSW 11 mph17 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 65°F19°C. Breezy from the WSW at 11 to 12 mph18 to 19 km/h. 22% chance of showers throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the WSW at 10 to 11 mph17 to 17 km/h. 23% chance of showers throughout the night.
	SaturdaySep 19	67°F20°C	59°F15°C	0.17 in4.3 mm· 22%	63%	Showers	NW 10 mph16 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 60°F16°C. Breezy from the WNW at 10 to 11 mph16 to 17 km/h. 22% chance of showers throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the NW at 10 mph16 km/h. 21% chance of showers throughout the night.
	SundaySep 20	65°F18°C	56°F13°C	0.15 in3.7 mm· 19%	57%	Showers	NNW 9 mph15 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 56°F13°C. Breezy from the NW at 9 to 10 mph15 to 15 km/h. 19% chance of showers throughout the day. NightMostly cloudy, with a low around 56°F13°C. Breezy from the N at 9 mph14 km/h. 19% chance of showers throughout the night.
	MondaySep 21	65°F18°C	54°F12°C	0.09 in2.2 mm· 12%	54%	Showers	NNE 9 mph14 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 54°F12°C. Breezy from the N at 9 mph15 km/h. 12% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 54°F12°C. Breezy from the NNE at 9 mph14 km/h. 12% chance of showers throughout the night.
	TuesdaySep 22	65°F18°C	54°F12°C	0.11 in2.8 mm· 14%	54%	Drizzle	ENE 9 mph15 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 54°F12°C. Breezy from the E at 9 to 10 mph15 to 16 km/h. 14% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 54°F12°C. Breezy from the ENE at 9 mph14 km/h. 14% chance of drizzle throughout the night.

Nearby Cities

London15 mi24 km Tillsonburg24 mi38 km Strathroy26 mi41 km Woodstock33 mi53 km Norfolk County41 mi65 km Stratford43 mi69 km

About This Forecast

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Coordinates: 42.7736°N, 81.1804°W·Elevation: 232m·Timezone: America/Toronto·Population: 38,909