Climate averages 1991–2020
Laval weather
in May.
A mild, wet month: the 5th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Laval: daytime highs average 18.4°C and nights cool to about 8.1°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 93 mm of rain on roughly 11 days, which makes May a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 53 min on an average May day.
The nearest other city in this atlas is Villeray–Saint-Michel–Parc-Extension (7 km away). In May its highs average 18.3°C, about as warm as Laval, with 100 mm of rain.
Among the 86 cities listed in Canada, Laval ranks joint 14th of 86 for the warmest May highs and joint 64th of 86 for the driest May (rainfall, lowest first). The mean May high of those 86 cities is 17.0°C; Laval is 1.4°C warmer than that mean.
From May to June, average highs rise by 4.9°C to 23.3°C, and monthly rainfall rises from 93 mm to 99 mm.
The annual picture
May in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Laval climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -5.4°C-14.5°C | -14.5°C | 74 | 10.3 | 9.19 h |
| February | -3.6°C-13.1°C | -13.1°C | 61 | 9.0 | 10.310 h |
| March | 2.3°C-7.1°C | -7.1°C | 73 | 10.4 | 11.912 h |
| April | 10.5°C0.5°C | 0.5°C | 102 | 11.4 | 13.513 h |
| May, selected | 18.4°C8.1°C | 8.1°C | 93 | 11.3 | 14.915 h |
| June | 23.3°C14.1°C | 14.1°C | 99 | 11.6 | 15.616 h |
| July | 25.6°C17.1°C | 17.1°C | 87 | 12.1 | 15.315 h |
| August | 24.6°C16.3°C | 16.3°C | 91 | 11.3 | 14.114 h |
| September | 20.4°C12.2°C | 12.2°C | 92 | 10.1 | 12.613 h |
| October | 12.8°C5.7°C | 5.7°C | 107 | 11.5 | 11.011 h |
| November | 5.4°C-1.0°C | -1.0°C | 86 | 11.3 | 9.610 h |
| December | -1.5°C-8.9°C | -8.9°C | 85 | 11.6 | 8.89 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Villeray–Saint-Michel–Parc-Extension in MayCanada · 7 kmHigh 18.3°C · Low 7.8°C · 100 mm rain
- Montréal in MayCanada · 11 kmHigh 17.3°C · Low 7.1°C · 100 mm rain
- Mercier–Hochelaga-Maisonneuve in MayCanada · 11 kmHigh 18.5°C · Low 8.3°C · 100 mm rain
- Pierrefonds-Roxboro in MayCanada · 14 kmHigh 18.3°C · Low 8.3°C · 93 mm rain
- Terrebonne in MayCanada · 15 kmHigh 18.4°C · Low 8.3°C · 95 mm rain
- Saint-Louis-de-Terrebonne in MayCanada · 16 kmHigh 18.1°C · Low 7.9°C · 95 mm rain
- Longueuil in MayCanada · 18 kmHigh 18.5°C · Low 8.3°C · 100 mm rain
- Repentigny in MayCanada · 27 kmHigh 18.4°C · Low 8.2°C · 93 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Laval) is explained once on the Laval year overview and on the Sources, method and limits page.
Pierrefonds-Roxboro lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.