St. Thomas

CA

Live · updated just now

Current conditions

Clear sky
29°C
Feels like 30°C · Clear sky
Humidity
63%
Wind
20 km/h WSW
Pressure
1020 hPa
UV Index
4 Moderate
Cloud Cover
7%
Precipitation
0 mm
Sunrise
6:00 AM
Sunset
9:03 PM
Compare

What to expect today in St. Thomas

Right now in St. Thomas it's 29°C with clear sky. Today's high should reach 35°C with an overnight low near 21°C. No significant precipitation is expected over the next several hours. Tomorrow will be cooler, reaching around 32°C with overcast.

Next 25 Hours

Now
Mainly clear
34°C
·
15:00
Mainly clear
34°C
·
16:00
Mainly clear
35°C
·
17:00
Clear sky
35°C
·
18:00
Clear sky
34°C
·
19:00
Overcast
32°C
·
20:00
Overcast
30°C
·
21:00
Overcast
27°C
·
22:00
Overcast
25°C
·
23:00
Overcast
25°C
·
00:00
Overcast
27°C
·
01:00
Overcast
26°C
·
02:00
Overcast
24°C
·
03:00
Mainly clear
22°C
·
04:00
Overcast
21°C
·
05:00
Overcast
20°C
·
06:00
Overcast
20°C
·
07:00
Overcast
21°C
·
08:00
Overcast
23°C
·
09:00
Overcast
26°C
·
10:00
Partly cloudy
27°C
·
11:00
Overcast
29°C
·
12:00
Partly cloudy
30°C
·
13:00
Partly cloudy
31°C
·
14:00
Partly cloudy
32°C
·

10-Day Forecast

Forecast trends

Next 24 hours — temperature & precipitation

10-day outlook — high / low & rainfall

St. Thomas on the map

About St. Thomas

St. Thomas, Ontario, is situated on the southern shore of Lake Ontario. The city is known for its vibrant community and scenic lake views, enjoying a temperate climate.

St. Thomas experiences four distinct seasons with warm, humid summers and cooler winters. Temperatures range from a low of around -10°C in winter to highs near 25°C in summer. Expect high humidity and occasional rain, with light snow possible in the colder months.

Nearby Cities

Compare St. Thomas with another citySee weather & climate side by side — find your climate twin.