University of Toronto Atmospheric Observatory weather

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 Latitude N 43° 39' 36"    Longitude W 79° 24' 00"    Elevation 174 m

Records began on 24 October 2001. Here are the month-by-month extremes recorded since then. Please note that there are many errors which occurred in the conversion of data stored in WeatherLink to the current Cumulus sofware. Please ignore these errors for the time being.

Records for the month of January
Temperature and Humidity
Highest Temperature 25.4 °C at 01:16 on 31 January 2013
Lowest Temperature -22.9 °C at 14:00 on 21 January 2005
Highest Dew Point 11.7 °C at 20:00 on 01 January 2011
Lowest Dew Point -1777.0 °C at 18:14 on 16 January 2004
Highest Apparent Temperature 1.102E9 °C at 06:09 on 15 January 2004
Lowest Apparent Temperature -32.4 °C at 15:14 on 07 January 2014
Lowest Wind Chill Temperature -38.1 °C at 18:43 on 15 January 2004
Highest Heat Index 25.4 °C at 01:16 on 31 January 2013
Highest Minimum 21.2 °C at 23:39 on 30 January 2013
Lowest Maximum -14.4 °C at 04:30 on 15 January 2004
Highest Humidity 100 % at 00:00 on 01 January 2002
Lowest Humidity 1 % at 19:30 on 20 January 2003
Highest Daily Range 16.2 °C on 06 January 2014
Lowest Daily Range 0.0 °C on 01 January 2002
Rainfall
Highest Rain Rate 303.3 mm/hr at 17:00 on 12 January 2005
Highest Hourly Rainfall 285.8 mm at 18:00 on 12 January 2005
Highest Daily Rainfall 686.6 mm on 12 January 2005
Highest Monthly Rainfall 703.6 mm January 2005
Longest Dry Period 60 days to 31 January 2013
Longest Wet Period 6 days to 10 January 2003
Wind
Highest Wind Gust 29.1 m/s at 22:00 on 19 January 2003
Highest Wind Speed Average 15.6 m/s at 03:22 on 25 January 2014
Highest Daily Wind Run 551.0 km on 20 January 2003
Pressure
Lowest Pressure (sl) 958.28 hPa at 05:30 on 09 January 2003
Highest Pressure (sl) 1022.18 hPa at 14:11 on 13 January 2015


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