Saint John NB - Recent May Temperatures, Rain & Snow

The numbers here describe what the May weather in Saint John, New Brunswick Canada was like for every year since 2010. A series of tables gives May 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 May. Then there's information on how much rain and snow actually landed this month during recent years, as well as how often Saint John had wet or snowy weather.

The climate data come from weather measurements made at the Saint John Airport.

Temperature Weather iconTemperature

May temperature averages by year in Saint John
High °F Low °F Year High °C Low °C
61 36 2023 16 2
63 39 2022 17 4
61 38 2021 16 3
58 34 2020 15 1
56 34 2019 13 1
62 35 2018 17 2
60 40 2017 16 4
61 39 2016 16 4
59 38 2015 15 3
60 37 2014 15 3
60 40 2013 16 4
62 40 2012 17 4
59 43 2011 15 6
63 40 2010 17 4
Number of days in May when the temperature in Saint John 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 11 2023 4
0 7 2022 5
0 4 2021 1
0 14 2020 1
0 13 2019 1
0 11 2018 1
0 3 2017 4
0 3 2016 3
0 7 2015 1
0 12 2014 3
0 5 2013 1
0 10 2012 5
0 0 2011 4
0 3 2010 3

Rainy Weather iconPrecipitation

This table gives the total precipitation that fell on Saint John during May 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 May in Saint John
Days Year Inches Milli­metres
8 2023 3.7 93
15 2022 1.9 49
16 2021 2.8 71
12 2020 3.9 99
16 2019 4.7 120
13 2018 2.6 65
15 2017 7.9 199
15 2016 2.6 66
13 2015 2.9 74
12 2014 3.1 78
15 2013 5.8 147
4 2012 3.3 85
9 2011 6.1 154
5 2010 1.9 48

Snowy Weather iconSnow

Amount of snowfall in Saint John for May and number of days when new snow totalled at least 2.5 centimetres (1 inch)
Days Year Inches Centi­metres
0 2023 0.0 0.0
0 2022 0.0 0.0
0 2021 0.0 0.0
1 2020 2.3 5.8
0 2019 0.0 0.0
0 2018 0.0 0.0
0 2017 0.0 0.0
0 2016 0.0 0.0
0 2015 0.8 2.0
0 2014 0.0 0.0
0 2013 0.0 0.0
0 2012 0.0 0.0
0 2011 0.0 0.0
0 2010 0.0 0.0
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. 

Saint John - Recent Years
Saint John - Extremes
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