Ottawa - Recent October Temperatures, Rain & Snow





The numbers here describe what the October weather in Ottawa, Ontario Canada was like for every year since 2010. A series of tables gives October data by year for temperature, precipitation and snowfall.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many hot or cold days occurred each October. Then there's information on how much rain and snow actually landed this month during recent years, as well as how often Ottawa had wet or snowy weather.

The climate data come from weather measurements made near downtown Ottawa.

Temperature Weather iconTemperature

October temperature averages by year in Ottawa
High °F Low °F Year High °C Low °C
54 37 2020 12 3
58 40 2019 14 4
51 38 2018 11 3
64 46 2017 18 8
57 41 2016 14 5
55 38 2015 13 3
58 43 2014 14 6
59 42 2013 15 6
59 43 2012 15 6
58 43 2011 15 6
55 39 2010 13 4
Number of days in October when the temperature in Ottawa dropped to -18 or 0 or below, or rose to at least 21 degrees Celsius
-18 °C
0 °F
0 °C
32 °F
Year 21 °C
70 °F
0 8 2020 2
0 7 2019 0
0 10 2018 2
0 1 2017 9
0 6 2016 3
0 6 2015 1
0 3 2014 3
0 6 2013 7
0 3 2012 4
0 4 2011 5
0 4 2010 0

Rainy Weather iconPrecipitation

This table gives the total precipitation that fell on Ottawa during October in each year from 2010. The number of days with precipitation counts the days when rainfall or snowfall (when melted) amounted to 0.254 millimeters (0.01 inches) or more.

Total precipitation for October in Ottawa
Days Year Inches Milli­metres
13 2020 3.0 76
12 2019 6.3 159
12 2018 2.0 52
13 2017 5.6 142
12 2016 3.9 99
8 2015 3.3 84
8 2014 2.6 65
8 2013 3.4 86
6 2012 2.2 57
10 2011 3.4 87
7 2010 3.1 78

Snowy Weather iconSnow

Amount of snowfall in Ottawa for October and number of days when new snow totalled at least 2.5 centimetres (1 inch)
Days Year Inches Centi­metres
0 2020 0.1 0.3
0 2019 0.0 0.0
2 2018 4.3 10.9
0 2017 0.0 0.0
1 2016 3.1 7.9
0 2015 0.0 0.0
0 2014 0.0 0.0
0 2013 0.0 0.0
0 2012 0.0 0.0
0 2011 0.0 0.0
1 2010 2.6 6.6
Reference

Environment and Climate Change Canada. Historical Climate Data. Historical Data

Jay Lawrimore. 2016. Global Summary of the Month, Version 1.0. NOAA National Centers for Environmental Information. 

Ottawa - Recent Years
Ottawa - Extremes
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