Moncton Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is in Moncton, New Brunswick during each month of the year.
The average high and low temperatures are listed below monthly and annually for Moncton, in both degrees Fahrenheit and Celsius.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
To find out how often it rises over 10, 20 or 30 °C each month in Moncton, scroll down farther. There are also monthly and yearly counts of days with frost and cold weather.
The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1981 to 2010 weather.
| High °F | Low °F | High °C | Low °C | |
|---|---|---|---|---|
| 28 | 11 | January | -2 | -12 |
| 28 | 11 | February | -2 | -12 |
| 36 | 19 | March | 2 | -7 |
| 49 | 30 | April | 9 | -1 |
| 62 | 40 | May | 17 | 4 |
| 70 | 48 | June | 21 | 9 |
| 79 | 57 | July | 26 | 14 |
| 78 | 56 | August | 25 | 13 |
| 70 | 48 | September | 21 | 9 |
| 57 | 38 | October | 14 | 3 |
| 43 | 28 | November | 6 | -2 |
| 33 | 18 | December | 0 | -8 |
| 52 | 34 | Year | 11 | 1 |
| High °F | Low °F | High °C | Low °C | |
|---|---|---|---|---|
| 26 | 8 | January | -3 | -13 |
| 29 | 10 | February | -2 | -12 |
| 37 | 19 | March | 3 | -7 |
| 48 | 31 | April | 9 | -1 |
| 62 | 41 | May | 17 | 5 |
| 71 | 50 | June | 22 | 10 |
| 77 | 57 | July | 25 | 14 |
| 77 | 56 | August | 25 | 13 |
| 68 | 48 | September | 20 | 9 |
| 56 | 38 | October | 13 | 3 |
| 44 | 29 | November | 6 | -1 |
| 32 | 17 | December | 0 | -8 |
| 52 | 34 | Year | 11 | 1 |
Days of Hot Weather in Moncton
The hottest days of summer in Moncton have highs in the low thirties Celsius (over 86 °F). While the thermometer has been known to climb above 35 °C (95 °F), it happens only rarely, less than once a decade.
| 10 °C 50 °F |
20 °C 68 °F |
30 °C 86 °F | |
|---|---|---|---|
| January | 1 | 0 | 0 |
| February | 1 | 0 | 0 |
| March | 2 | 0 | 0 |
| April | 12 | 1 | 0 |
| May | 26 | 9 | 0 |
| June | 30 | 19 | 1 |
| July | 31 | 28 | 3 |
| August | 31 | 27 | 2 |
| September | 30 | 14 | 0 |
| October | 21 | 2 | 0 |
| November | 7 | 0 | 0 |
| December | 2 | 0 | 0 |
| Year | 194 | 99 | 7 |
When Moncton Has Frosty Weather
Moncton typically has 167 days a year when the minimum temperature is at 0 °C or below. The average date for the last frost in spring is May 23. Frost normally returns here on October 2. The frost-free period extends for 131 days on average between the final spring frost and the first fall frost.
| 0 °C 32 °F | |
|---|---|
| January | 30 |
| February | 27 |
| March | 28 |
| April | 19 |
| May | 5 |
| June | 0 |
| July | 0 |
| August | 0 |
| September | 1 |
| October | 10 |
| November | 19 |
| December | 28 |
| Year | 167 |
How Often Moncton Has Cold Temperatures
Moncton's chilliest winter nights have lows in the minus-twenties °C (below -3 °F). The city averages just 14 nights a year, mostly in January and February, when the thermometer drops that low. Temperatures less than -30 °C (-22 °F) can occur, but typically only once in five years.
From November to April, it can remain below freezing here all day long. Moncton typically has 70 days a year when the temperature never rises above 0 °C.
| -2 °C 28 °F |
-10 °C 14 °F |
-20 °C -4 °F | |
|---|---|---|---|
| January | 28 | 20 | 6 |
| February | 25 | 17 | 5 |
| March | 22 | 9 | 2 |
| April | 9 | 0 | 0 |
| May | 1 | 0 | 0 |
| June | 0 | 0 | 0 |
| July | 0 | 0 | 0 |
| August | 0 | 0 | 0 |
| September | 0 | 0 | 0 |
| October | 4 | 0 | 0 |
| November | 13 | 1 | 0 |
| December | 24 | 12 | 2 |
| Year | 126 | 59 | 14 |
References
Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.
Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.