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St. Thomas, Ontario (32540492417)Photo: Ken Lund from Reno, Nevada, USA · CC BY-SA 2.0
Weather in St. Thomas · ECCC forecast and 1991–2020 normals

Weather in St. Thomas: chance of rain showers or flurries tomorrow, up to 7 degrees

Wednesday should be the warmest of the days ahead, at 11°C, and the coolest reaches only 4°C. Judged by the averages, St. Thomas sees November days reach 8°C and nights fall to 0°C. Rain or snow is 40% likely tomorrow, the wind freshening to 20 km/h, with a low near 1°C.

Winter 0°/−8°CSpring 12°/2°CSummer 26°/14°CAutumn 15°/5°C
Right now
3°C
Mostly Cloudy
High 7°C · Low 1°C · Wind 14 km/h
Tomorrow is about normal for 14 November
Sunrise 07:14 · sunset 17:04
Observed at London Int'l Airport, 18:00
Tomorrow
7°C / 1°C
A normal 14 November: 8°C / 0°C
Chance of snow
40%
Possible in the next 24 hours
Wind
14 km/h
From the NNW · gusts 31 km/h · up to 20 km/h tomorrow
Wind chill
−3
what it feels like now
Daylight
9 h 49 min
07:14 to 17:03
Hour by hour · °C

The next 24 hours in St. Thomas

Temperatures top out near 13:00 (7°C) and dip lowest near 01:00 (−2°C). The best chance of snow comes around 14:00 (40%).

19:00 · 2°C · Chance of showers · 30% chance of rain or snow · wind 10 km/h2°Now20:00 · 1°C · Chance of showers · 30% chance of rain or snow · wind 10 km/h21:00 · 1°C · Cloudy · 20% chance of rain or snow · wind 10 km/h1°22:00 · 0°C · Cloudy · 20% chance of rain or snow · wind 10 km/h22:0023:00 · −1°C · Cloudy · 20% chance of rain or snow · wind 10 km/h−1°00:00 · −1°C · Cloudy · 20% chance of rain or snow · wind 10 km/h01:00 · −2°C · Cloudy · 20% chance of snow · wind 10 km/h−2°01:0002:00 · −2°C · Cloudy · 20% chance of snow · wind 10 km/h03:00 · −1°C · Chance of flurries · 30% chance of rain or snow · wind 10 km/h−1°04:00 · −1°C · Chance of flurries · 30% chance of rain or snow · wind 10 km/h04:0005:00 · −1°C · Chance of flurries · 30% chance of rain or snow · wind 10 km/h−1°06:00 · 0°C · Chance of flurries · 30% chance of rain or snow · wind 10 km/h07:00 · 0°C · Chance of flurries · 30% chance of rain or snow · wind 10 km/h0°07:0008:00 · 1°C · Chance of flurries · 30% chance of rain or snow · wind 10 km/h09:00 · 3°C · Chance of showers · 30% chance of rain · wind 10 km/h3°10:00 · 4°C · Chance of showers · 30% chance of rain · wind 20 km/h10:0011:00 · 5°C · Chance of showers · 30% chance of rain · wind 20 km/h5°12:00 · 6°C · Chance of showers · 30% chance of rain · wind 20 km/h13:00 · 7°C · Chance of showers · 30% chance of rain · wind 20 km/h7°13:0014:00 · 7°C · Chance of showers · 40% chance of rain · wind 20 km/h40%15:00 · 6°C · Chance of showers · 40% chance of rain · wind 20 km/h6°16:00 · 6°C · Chance of showers · 40% chance of rain · wind 10 km/h16:0017:00 · 5°C · Chance of showers · 40% chance of rain · wind 10 km/h5°18:00 · 5°C · Chance of showers · 40% chance of rain · wind 10 km/h
TemperatureChance of snowNight
7 days · °C

The week ahead, against a normal week

A mix: some days above normal, some below. Tap a day for more.

Sat14 NovChance of rain showers or flurries40% chance1°7°normal

Saturday: Cloudy. 30 percent chance of flurries changing to 40 percent chance of rain showers in the morning. Wind becoming northwest 20 km/h gusting to 40 in the morning then light late in the afternoon. High 7. UV index 1 or low.

Saturday night: Cloudy with 40 percent chance of showers. Low plus 1.

Sun15 NovChance of showers30% chance1°4°−4°

Sunday: A mix of sun and cloud with 30 percent chance of showers. High plus 4.

Sunday night: Clear. Low plus 1.

Mon16 NovSunny2°6°normal

Monday: Sunny. High 6.

Monday night: Clear. Low plus 2.

Tue17 NovSunny1°9°+2°

Tuesday: Sunny. High 9.

Tuesday night: Clear. Low plus 1.

Wed18 NovSunny3°11°+4°

Wednesday: Sunny. High 11.

Wednesday night: Clear. Low plus 3.

Thu19 NovA mix of sun and cloud11°+4°

Thursday: A mix of sun and cloud. High 11.

Normal range for the date (ECCC 1991–2020 normals, London)Forecast low to high
A normal year

Where today sits in St. Thomas’ year

Typical highs and lows month by month, from the ECCC averages.

Full climate →
Winter
0° / −8°
221 mm of rain and snow
Spring
12° / 2°
245 mm of rain and snow
Summer
26° / 14°
233 mm of rain and snow
Autumn now
15° / 5°
263 mm of rain and snow, the wettest season
171days to the average last frost, 3 May
Best months to be outside
JunJulAugSep
Highs of 17–27°C and nights of 8°C or more
When is it wettest?September, with 93 mm.When does the most snow fall?January, with 43 cm.What is each month like?Highs, lows, rain and snow for all 12.

Warnings and more

ECCC issues Canada’s weather alerts; check its warnings page before travelling in bad weather.

Weather alertsNothing in force for the area right now: ECCC’s warnings page shows new alerts first.ECCC forecast: St. ThomasThe forecast in full on ECCC’s page for the site, 1.5 km away.St. Thomas’s climateThirty-year normals: temperatures, rain and snow, frost and heating.Flood & hazardsWhat could go wrong in St. Thomas: wildfire, flooding, earthquakes, radon.

Forecast, current conditions and alerts: Environment and Climate Change Canada’s city page for St. Thomas, fetched 13 November, 18:23. Normals: ECCC 1991–2020, London. Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence

Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).