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Canada › Ontario › St. Marys

St. Marys, ON Weather

Current weather

6:00 PM
41°F
Wind chill 30
Mostly Cloudy
High 53° · Low 36° · 80%
Wind
SW 12 mph
Wind gusts
18 mph
Humidity
86%
Air quality (AQHI)
1.3 · Low risk
UV index
0 · Low
More details
Dew point
37°F
Pressure
29.97 inHg ↗ rising
Visibility
6 mi
Sunrise
7:06 AM
Sunset
5:10 PM
Daylight
10 h 4 min
Observed at London Int'l Airport, 6:00 PM EST · Environment and Climate Change Canada

Hourly forecast

Hourly →
  • Now41°80%
  • 8 PM41°80%
  • 9 PM39°80%
  • 10 PM39°80%
  • 11 PM39°80%
  • Sat
  • 12 AM39°80%
  • 1 AM39°80%
  • 2 AM39°80%
  • 3 AM37°80%
  • 4 AM37°80%
  • 5 AM37°80%
  • 6 AM36°60%
  • 7 AM36°60%
  • 8 AM37°60%
  • 9 AM41°60%
  • 10 AM43°60%
  • 11 AM45°60%
  • 12 PM45°60%
  • 1 PM46°60%
  • 2 PM46°60%
  • 3 PM46°20%
  • 4 PM46°20%
  • 5 PM45°20%
  • 6 PM45°20%

14-day forecast

Full 14-day →
TonightNov 653°36°ShowersA few showers80%

Day

Wind
S 12 mph
Wind gusts
20 mph
Precipitation
80% · 0.13 in
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
36°
Wind
S 12 mph
Sunrise7:06 AM
Sunset5:10 PM
Daylight10 h 4 min
Normal45° / 34°
SatNov 746°34°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 12 mph
Wind gusts
25 mph
Precipitation
60% · 0.08 in
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
34°
Wind
NW 12 mph
Sunrise7:06 AM
Sunset5:10 PM
Daylight10 h 4 min
SunNov 848°39°Chance of showersChance of showers40%

Day

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

Wind
W 19 mph
Wind gusts
37 mph
Precipitation
30% · 0.01 in
UV index (max)
2 Low

Night

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

Low
39°
Wind
W 19 mph
Precipitation
40%
Sunrise7:07 AM
Sunset5:09 PM
Daylight10 h 1 min
MonNov 950°45°Chance of showersCloudy periods30%

Day

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

Precipitation
30% · 0 in
UV index (max)
4 Moderate

Night

Cloudy periods. Low 7.

Low
45°
Sunrise7:08 AM
Sunset5:08 PM
Daylight9 h 59 min
TueNov 1052°37°A mix of sun and cloudCloudy periods9%

Day

A mix of sun and cloud. High 11.

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

Night

Cloudy periods. Low plus 3.

Low
37°
Sunrise7:09 AM
Sunset5:06 PM
Daylight9 h 57 min
WedNov 1145°36°CloudyCloudy36%

Day

Cloudy. High 7.

Precipitation
36% · 0.01 in
UV index (max)
2 Low

Night

Cloudy. Low plus 2.

Low
36°
Sunrise7:11 AM
Sunset5:05 PM
Daylight9 h 54 min
ThuNov 1245°31°Cloudy42%

Day

Cloudy. High 7.

Precipitation
42% · 0.02 in
UV index (max)
2 Low

Night

Low 31.

Low
31°
Sunrise7:12 AM
Sunset5:04 PM
Daylight9 h 52 min
Days 8–14 · trend, lower confidence
FriNov 1340°30°Partly cloudyNight low 30°45%

Day

Partly cloudy. High 40.

Wind
NW 6 mph
Wind gusts
13 mph
Precipitation
45% · 0.02 in
UV index (max)
2 Low

Night

Low 30.

Low
30°
Sunrise7:13 AM
Sunset5:03 PM
Daylight9 h 50 min
SourceExtended outlook
SatNov 1441°30°Partly cloudyNight low 30°19%

Day

Partly cloudy. High 41.

Wind
N 7 mph
Wind gusts
17 mph
Precipitation
19% · 0 in
UV index (max)
2 Low

Night

Low 30.

Low
30°
Sunrise7:15 AM
Sunset5:02 PM
Daylight9 h 47 min
SourceExtended outlook
SunNov 1545°34°Mostly cloudyNight low 34°15%

Day

Mostly cloudy. High 45.

Wind
W 7 mph
Wind gusts
22 mph
Precipitation
15% · 0 in
UV index (max)
3 Moderate

Night

Low 34.

Low
34°
Sunrise7:16 AM
Sunset5:01 PM
Daylight9 h 45 min
SourceExtended outlook
MonNov 1650°37°Partly cloudyNight low 37°18%

Day

Partly cloudy. High 50.

Wind
SW 13 mph
Wind gusts
26 mph
Precipitation
18% · 0 in
UV index (max)
3 Moderate

Night

Low 37.

Low
37°
Sunrise7:17 AM
Sunset5:01 PM
Daylight9 h 43 min
SourceExtended outlook
TueNov 1753°42°Mostly cloudyNight low 42°14%

Day

Mostly cloudy. High 53.

Wind
S 7 mph
Wind gusts
21 mph
Precipitation
14% · 0 in
UV index (max)
4 Moderate

Night

Low 42.

Low
42°
Sunrise7:18 AM
Sunset5:00 PM
Daylight9 h 41 min
SourceExtended outlook
WedNov 1853°38°Partly cloudyNight low 38°9%

Day

Partly cloudy. High 53.

Wind
SE 7 mph
Wind gusts
15 mph
Precipitation
9% · 0 in
UV index (max)
4 Moderate

Night

Low 38.

Low
38°
Sunrise7:20 AM
Sunset4:59 PM
Daylight9 h 39 min
SourceExtended outlook
ThuNov 1956°44°Mostly cloudyNight low 44°29%

Day

Mostly cloudy. High 56.

Wind
SW 12 mph
Wind gusts
24 mph
Precipitation
29% · 0 in
UV index (max)
3 Moderate

Night

Low 44.

Low
44°
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
High27°30°38°52°65°74°78°76°69°56°43°32°
Low15°16°23°35°45°54°58°56°50°40°32°22°
Precip3.82 in2.80 in2.60 in3.15 in3.62 in3.03 in4.02 in3.31 in4.02 in3.54 in4.13 in4.13 in
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 1,066 ft · Population 7,386 · Time zone America/Toronto