HEAT WARNING IN EFFECT

Observed at: St. Catharines Airport
Date: 4:00 AM EDT Sunday 24 September 2017
Temperature: 18.6°C
Wind: SSW 7 km/h
Humidity: 91%
Dew point: 17.2°C
Pressure: 102.0 kPa
Sunrise: 7:06 EDT
Sunset: 19:11 EDT
Normals:
Max 20°C. Min 10°C.
 Extended Forecast - Environment Canada
  Sunday
Sunny
Sunny
Max: 32°C
Monday
Sunny
Sunny
Max: 32°C
Tuesday
A mix of sun and cloud
A mix of sun and cloud
Max: 31°C
Wednesday
Chance of showers (40%)
Chance of showers
Max: 27°C
Thursday
A mix of sun and cloud
A mix of sun and cloud
Max: 19°C
Friday
Chance of showers (30%)
Chance of showers
Max: 17°C
Tonight
Clear
Clear
Min: 17°C
Sunday night
Clear
Clear
Min: 18°C
Monday night
Clear
Clear
Min: 18°C
Tuesday night
Cloudy periods
Cloudy periods
Min: 18°C
Wednesday night
Cloudy periods
Cloudy periods
Min: 14°C
Thursday night
Cloudy periods
Cloudy periods
Min: 11°C

Forecast

St. Catharines, ON (Issued: 3:30 PM EDT Saturday 23 September 2017)
Saturday night
Clear. Low 17.
Sunday
Sunny. High 32. Humidex 40. UV index 6 or high.
Sunday night
Clear. Fog patches developing before morning. Low 18.
Monday
Sunny. High 32.
Monday night
Clear. Low 18.
Tuesday
A mix of sun and cloud. High 31.
Tuesday night
Cloudy periods. Low 18.
Wednesday
A mix of sun and cloud with 40 percent chance of showers. High 27.
Wednesday night
Cloudy periods. Low 14.
Thursday
A mix of sun and cloud. High 19.
Thursday night
Cloudy periods. Low 11.
Friday
A mix of sun and cloud with 30 percent chance of showers. High 17.

Environment Canada