St. Catharines, ON

Current Conditions

19°C 66°F

Wind:
WNW 2 km/h
WNW 1 mph
Conditions details
Observed at:
St. Catharines Airport
Date:
2:00 AM EDT Monday 25 September 2017
Condition:
Not observed
Pressure:
101.8 kPa
30.1 inches
Temperature:
19.1°C
66.4°F
Dew point:
18.0°C
64.4°F
Humidity:
93%
Wind:
WNW 2 km/h
WNW 1 mph

ForecastIssued: 3:30 PM EDT Sunday 24 September 2017

Detailed ForecastIssued: 3:30 PM EDT Sunday 24 September 2017

Clear
Tonight
17°C 63°F
Clear. Fog patches developing overnight. Low 17.
Mainly sunny
Mon, 25 Sep
31°C 88°F
Mainly sunny. Fog patches dissipating in the morning. High 31. Humidex 40. UV index 6 or high.
Night:  A few clouds. Fog patches overnight. Low 17.
A mix of sun and cloud
Tue, 26 Sep
32°C 90°F
A mix of sun and cloud. High 32.
Night:  Cloudy periods. Low 17.
Chance of showers
Wed, 27 Sep
30°C 86°F
A mix of sun and cloud with 40 percent chance of showers. High 30.
Night:  Cloudy periods. Low 13.
A mix of sun and cloud
Thu, 28 Sep
20°C 68°F
A mix of sun and cloud. High 20.
Night:  Cloudy periods. Low 10.
Chance of showers
Fri, 29 Sep
17°C 63°F
A mix of sun and cloud with 30 percent chance of showers. High 17.
Night:  Cloudy periods with 30 percent chance of showers. Low 8.
Chance of showers
Sat, 30 Sep
15°C 59°F
A mix of sun and cloud with 30 percent chance of showers. High 15.
Normals:
Max 19°C.66°F. Min 10°C.50°F.
Sunrise:
7:07 EDT
Sunset:
19:10 EDT

Averages and extremes
20 September
Average high
  • 20.8°C69.4°F
Average low
  • 10.9°C51.6°F
Highest temperature (1971-2000)
  • 29.1°C84.4°F
  • 1983
Lowest temperature (1971-2000)
  • 2.3°C36.1°F
  • 1993
Greatest precipitation (1971-2000)
  • 14.2 mm0.56 inches
  • 1971
Greatest rainfall (1971-2000)
  • 14.2 mm0.56 inches
  • 1971
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
21 September
Average high
  • 20.5°C68.9°F
Average low
  • 10.7°C51.3°F
Highest temperature (1971-2000)
  • 29.0°C84.2°F
  • 1980
Lowest temperature (1971-2000)
  • 1.1°C34.0°F
  • 1973
Greatest precipitation (1971-2000)
  • 23.4 mm0.92 inches
  • 1983
Greatest rainfall (1971-2000)
  • 23.4 mm0.92 inches
  • 1983
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
22 September
Average high
  • 20.3°C68.5°F
Average low
  • 10.5°C50.9°F
Highest temperature (1971-2000)
  • 28.1°C82.6°F
  • 1980
Lowest temperature (1971-2000)
  • 4.4°C39.9°F
  • 1974
Greatest precipitation (1971-2000)
  • 47.6 mm1.87 inches
  • 1989
Greatest rainfall (1971-2000)
  • 47.6 mm1.87 inches
  • 1989
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
23 September
Average high
  • 20.1°C68.2°F
Average low
  • 10.3°C50.5°F
Highest temperature (1971-2000)
  • 27.6°C81.7°F
  • 1985
Lowest temperature (1971-2000)
  • 0.6°C33.1°F
  • 1974
Greatest precipitation (1971-2000)
  • 25.0 mm0.98 inches
  • 2000
Greatest rainfall (1971-2000)
  • 25.0 mm0.98 inches
  • 2000
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
24 September
Average high
  • 19.9°C67.8°F
Average low
  • 10.1°C50.2°F
Highest temperature (1971-2000)
  • 22.9°C73.2°F
  • 1986
Lowest temperature (1971-2000)
  • 1.7°C35.1°F
  • 1974
Greatest precipitation (1971-2000)
  • 34.0 mm1.34 inches
  • 1977
Greatest rainfall (1971-2000)
  • 34.0 mm1.34 inches
  • 1977
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
25 September
Average high
  • 19.7°C67.5°F
Average low
  • 9.8°C49.6°F
Highest temperature (1971-2000)
  • 24.4°C75.9°F
  • 1972
Lowest temperature (1971-2000)
  • 4.0°C39.2°F
  • 1989
Greatest precipitation (1971-2000)
  • 63.0 mm2.48 inches
  • 1994
Greatest rainfall (1971-2000)
  • 63.0 mm2.48 inches
  • 1994
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
26 September
Average high
  • 19.5°C67.1°F
Average low
  • 9.6°C49.3°F
Highest temperature (1971-2000)
  • 29.3°C84.7°F
  • 1998
Lowest temperature (1971-2000)
  • 4.1°C39.4°F
  • 1978
Greatest precipitation (1971-2000)
  • 26.2 mm1.03 inches
  • 1977
Greatest rainfall (1971-2000)
  • 26.2 mm1.03 inches
  • 1977
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
27 September
Average high
  • 19.2°C66.6°F
Average low
  • 9.4°C48.9°F
Highest temperature (1971-2000)
  • 27.3°C81.1°F
  • 1999
Lowest temperature (1971-2000)
  • 1.9°C35.4°F
  • 1980
Greatest precipitation (1971-2000)
  • 16.4 mm0.65 inches
  • 1982
Greatest rainfall (1971-2000)
  • 16.4 mm0.65 inches
  • 1982
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
28 September
Average high
  • 19.0°C66.2°F
Average low
  • 9.2°C48.6°F
Highest temperature (1971-2000)
  • 29.4°C84.9°F
  • 1999
Lowest temperature (1971-2000)
  • 2.0°C35.6°F
  • 2000
Greatest precipitation (1971-2000)
  • 32.6 mm1.28 inches
  • 1994
Greatest rainfall (1971-2000)
  • 32.6 mm1.28 inches
  • 1994
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
29 September
Average high
  • 18.8°C65.8°F
Average low
  • 9.0°C48.2°F
Highest temperature (1971-2000)
  • 26.7°C80.1°F
  • 1971
Lowest temperature (1971-2000)
  • 0.4°C32.7°F
  • 1991
Greatest precipitation (1971-2000)
  • 42.8 mm1.69 inches
  • 1999
Greatest rainfall (1971-2000)
  • 42.8 mm1.69 inches
  • 1999
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %
30 September
Average high
  • 18.5°C65.3°F
Average low
  • 8.8°C47.8°F
Highest temperature (1971-2000)
  • 25.5°C77.9°F
  • 1986
Lowest temperature (1971-2000)
  • 1.0°C33.8°F
  • 1991
Greatest precipitation (1971-2000)
  • 27.6 mm1.09 inches
  • 1978
Greatest rainfall (1971-2000)
  • 27.6 mm1.09 inches
  • 1978
Greatest snowfall (1971-2000)
  • 0.0 cm0.0 inches
Most snow on the ground (1971-2000)
  • 0.0 cm0.0 inches
Monthly frequency of precipitation
  • 36 %

Yesterday's Data

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