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Canada › Ontario › St. Marys

St. Marys, ON Weather

Current weather

8:03 PM
5°C
Feels like -1°
Light Rainshower
High 11° · Low 2° · 79%
Wind
W 15 km/h
Wind gusts
32 km/h
Humidity
88%
Air quality (AQHI)
1.3 · Low risk
UV index
0 · Low
More details
Dew point
3°C
Pressure
101.5 kPa ↗ rising
Visibility
10 km
Sunrise
7:06 AM
Sunset
5:10 PM
Daylight
10 h 4 min
Observed at London Int'l Airport, 8:03 PM EST · Environment and Climate Change Canada

Hourly forecast

Hourly →
  • Now5°24%
  • 9 PM4°80%
  • 10 PM4°80%
  • 11 PM4°80%
  • Sat
  • 12 AM4°80%
  • 1 AM4°80%
  • 2 AM4°80%
  • 3 AM3°80%
  • 4 AM3°80%
  • 5 AM3°80%
  • 6 AM2°60%
  • 7 AM2°60%
  • 8 AM3°60%
  • 9 AM5°60%
  • 10 AM6°60%
  • 11 AM7°60%
  • 12 PM7°60%
  • 1 PM8°60%
  • 2 PM8°60%
  • 3 PM8°20%
  • 4 PM8°20%
  • 5 PM7°20%
  • 6 PM7°20%
  • 7 PM6°20%

14-day forecast

Full 14-day →
TonightNov 611°2°ShowersA few showers79%

Day

Wind
S 20 km/h
Wind gusts
31 km/h
Precipitation
79% · 3 mm
UV index (max)
0 Low
Air quality (AQHI)
2 · Low risk

Night

Showers. Wind south 20 km/h becoming light late this evening. Low plus 2.

Low
2°
Wind
S 20 km/h
Sunrise7:06 AM
Sunset5:10 PM
Daylight10 h 4 min
Normal7° / 1°
SatNov 78°1°Chance of showersMainly cloudy60%

Day

Cloudy. 60 percent chance of showers in the morning and early in the afternoon. Wind becoming northwest 20 km/h gusting to 40 in the morning. High 8. UV index 1 or low.

Wind
NW 20 km/h
Wind gusts
40 km/h
Precipitation
60% · 2 mm
UV index (max)
1 Low
Air quality (AQHI)
2 · Low risk

Night

Cloudy. Becoming partly cloudy after midnight. Wind west 20 km/h becoming light late in the evening. Low plus 1.

Low
1°
Wind
NW 20 km/h
Sunrise7:06 AM
Sunset5:10 PM
Daylight10 h 4 min
SunNov 89°4°Chance of showersChance of showers40%

Day

A mix of sun and cloud with 30 percent chance of showers. Windy. High 9.

Wind
W 30 km/h
Wind gusts
60 km/h
Precipitation
30% · 0.1 mm
UV index (max)
2 Low

Night

Cloudy periods with 40 percent chance of showers. Windy. Low plus 4.

Low
4°
Wind
W 30 km/h
Precipitation
40%
Sunrise7:07 AM
Sunset5:09 PM
Daylight10 h 1 min
MonNov 910°7°Chance of showersCloudy periods30%

Day

A mix of sun and cloud with 30 percent chance of showers. High 10.

Precipitation
30% · 0.2 mm
UV index (max)
4 Moderate

Night

Cloudy periods. Low 7.

Low
7°
Sunrise7:08 AM
Sunset5:08 PM
Daylight9 h 59 min
TueNov 1011°3°A mix of sun and cloudCloudy periods9%

Day

A mix of sun and cloud. High 11.

Precipitation
9% · 0 mm
UV index (max)
4 Moderate

Night

Cloudy periods. Low plus 3.

Low
3°
Sunrise7:09 AM
Sunset5:06 PM
Daylight9 h 57 min
WedNov 117°2°CloudyCloudy66%

Day

Cloudy. High 7.

Precipitation
66% · 1 mm
UV index (max)
2 Low

Night

Cloudy. Low plus 2.

Low
2°
Sunrise7:11 AM
Sunset5:05 PM
Daylight9 h 54 min
ThuNov 127°0°Cloudy48%

Day

Cloudy. High 7.

Precipitation
48% · 0.6 mm
UV index (max)
2 Low

Night

Low 0.

Low
0°
Sunrise7:12 AM
Sunset5:04 PM
Daylight9 h 52 min
Days 8–14 · trend, lower confidence
FriNov 134°-2°Partly cloudyNight low -2°14%

Day

Partly cloudy. High 4.

Wind
N 13 km/h
Wind gusts
30 km/h
Precipitation
14% · 0 mm
UV index (max)
2 Low

Night

Low -2.

Low
-2°
Sunrise7:13 AM
Sunset5:03 PM
Daylight9 h 50 min
SourceExtended outlook
SatNov 144°-2°Partly cloudyNight low -2°22%

Day

Partly cloudy. High 4.

Wind
N 12 km/h
Wind gusts
25 km/h
Precipitation
22% · 0 mm
UV index (max)
1 Low

Night

Low -2.

Low
-2°
Sunrise7:15 AM
Sunset5:02 PM
Daylight9 h 47 min
SourceExtended outlook
SunNov 155°0°Partly cloudyNight low 0°18%

Day

Partly cloudy. High 5.

Wind
SW 9 km/h
Wind gusts
25 km/h
Precipitation
18% · 0 mm
UV index (max)
2 Low

Night

Low 0.

Low
0°
Sunrise7:16 AM
Sunset5:01 PM
Daylight9 h 45 min
SourceExtended outlook
MonNov 168°0°Mostly cloudyNight low 0°22%

Day

Mostly cloudy. High 8.

Wind
SW 19 km/h
Wind gusts
36 km/h
Precipitation
22% · 0 mm
UV index (max)
2 Low

Night

Low 0.

Low
0°
Sunrise7:17 AM
Sunset5:01 PM
Daylight9 h 43 min
SourceExtended outlook
TueNov 1711°5°Mostly cloudyNight low 5°15%

Day

Mostly cloudy. High 11.

Wind
S 11 km/h
Wind gusts
34 km/h
Precipitation
15% · 0 mm
UV index (max)
4 Moderate

Night

Low 5.

Low
5°
Sunrise7:18 AM
Sunset5:00 PM
Daylight9 h 41 min
SourceExtended outlook
WedNov 1811°4°Partly cloudyNight low 4°23%

Day

Partly cloudy. High 11.

Wind
S 15 km/h
Wind gusts
36 km/h
Precipitation
23% · 0.1 mm
UV index (max)
4 Moderate

Night

Low 4.

Low
4°
Sunrise7:20 AM
Sunset4:59 PM
Daylight9 h 39 min
SourceExtended outlook
ThuNov 1914°6°Mostly cloudyNight low 6°60%

Day

Mostly cloudy. High 14.

Wind
SW 25 km/h
Wind gusts
48 km/h
Precipitation
60% · 1 mm
UV index (max)
4 Moderate

Night

Low 6.

Low
6°
Sunrise7:21 AM
Sunset4:58 PM
Daylight9 h 37 min
SourceExtended outlook
Sunrise7:06 AM
Sunset5:10 PM
Daylight10 h 4 min
MoonWaning Crescent5% lit · rise 4:21 AM · set 3:35 PM

Pollen today · St. Marys

TreesNonenone in the air
GrassNonenone in the air
WeedsLow<1 grains/m³ · Ragweed
Sat: weeds low · Sun: weeds low
Model estimate from WeatherAPI.com — pollen grains per m³ of air; levels on the National Allergy Bureau scale.

Climate · monthly normals

Full climate →
MonthJanFebMarAprMayJunJulAugSepOctNovDec
High-3°-1°4°11°18°24°26°25°21°13°6°0°
Low-10°-9°-5°2°7°12°15°14°10°5°0°-6°
Precip97 mm71 mm66 mm80 mm92 mm77 mm102 mm84 mm102 mm90 mm105 mm105 mm
ECCC

Activities today

Derived from the forecast
Laundry dayPoorLine-drying weather
GrillingPoorFire up the grill
RunningFairLace up outside
PatioPoorDinner outdoors
Forecast: Environment and Climate Change Canada (Stratford - Mitchell - Southern Perth County), issued 3:30 PM · Days 8–14: WeatherAPI.com · weather.gc.ca · 43.2501°N, 81.1330°W · Elevation 325 m · Population 7,386 · Time zone America/Toronto