Cycle in a different climate throughout the year
This data comes from the Environment Canada station, operated by NAV CANADA, which is located in Roberval. It has been compiled over thirty years. The weather can vary from year to year.
May
The average monthly temperature is 9.9°C, with a daily high of 15.8°C and a daily low of 3.9°C.
The temperature rises most intensely or quickly between 10 a.m. and noon. The maximum temperature is reached between 1 p.m. and 3 p.m., followed by stability until about 5 p.m., and then drops quickly.
An average maximum temperature of 17.2°C and an average minimum temperature of 4.8°C were recorded on May 20, when the Véloroute des Bleuets opened.
There is an average of 69mm of rain during the month.
In May, the winds come mainly from the northwest; it is a cool and dry wind.
The first sunrays are felt at 5:02 a.m. You can admire the sunsets around 8:29 p.m. There are 15h28min of sunlight.
June
During the month of June, the heat and humidex make their presence known.
The average temperature is 15.6°C, with a daily high of 21.5°C and a low of 9.7°C.
In June, the temperature rises most quickly between 10 a.m. and 1 p.m. The maximum temperature is reached between 1 p.m. and 4 p.m., with a stable temperature until about 8 p.m.
During the first third of the month (June 10), there is an average high of 20.9°C and a low of 9°C, with an average high of 22°C and a low of 10.5°C for the second third (June 20).
There is around 82.9mm of rain over the whole month.
In June, the winds come mainly from the west, following the passage of a low-pressure system. Before the passage of this system, the wind comes from the south or southwest; it is a rather warm wind.
Sunrise is around 4:47 a.m. and sunset is around 8:52 p.m. There are approximately 16h05min of sunshine per day.
July
July is the hottest month of the summer in Lac-Saint-Jean but also the month with the greatest number of thunderstorms.
The average temperature is 18.3°C, with a daily maximum of 23.7°C and a minimum of 12.9°C.
The temperature rises most intensely and quickly between 8 a.m. and 1 p.m. The maximum temperature is reached between 1 p.m. and 3 p.m., followed by stability until about 5 p.m., and drops around 8 p.m.
The average maximum temperature recorded in the first third of the month (July 10) is 23.6°C, with an average minimum temperature of 12.7°C. In the second third (July 20), the maximum average temperature is 23.9°C, with an average minimum of 13°C.
There is about 105.7mm of rain during this period.
Most of the time, the winds come from the west, following the passage of a low-pressure system. Before this period, they come from the southwest; it is a hot wind.
The sun rises around 5:05 a.m. and sets around 8:45 p.m. There is a recorded 15h24min of sunlight daily.
August
August is the second hottest month of summer, with generally less rainfall than July.
The average monthly temperature is 17.1°C, with a daily high of 22.5°C and a low of 11.6°C.
The temperature warms up more quickly between 8 a.m. and 12 p.m. to reach its maximum between 12 p.m. and 2 p.m., with stable temperatures until about 4 p.m. The temperature drops after 7 p.m.
The average high recorded at the beginning of the month is 23.1°C with an average low of 12.1°C. The second third of the month (August 20) has an average high of 22°C and a low of 10.9°C.
There is 86.2mm of rainfall over the whole month.
The wind, coming from the west or southwest, depending on the passage of low pressure, is warm.
The sun rises around 5:43 a.m. and sets around 8 p.m. The total amount of sunlight is about 14h16min.
Towards the end of the month, you might glimpse the first leaves changing colours for fall.
September
The weather is favourable, still offering warm days despite the arrival of autumn. The ground freezes for the first time in this period, but it’s also in this month that Indian summer begins.
The average temperature is 12.3°C. The average daily high is 17.4°C and the low is 7.1°C.
Between 10 a.m. and 1 p.m., the temperature increases most intensely or quickly. The maximum temperature is reached between 1 p.m. and 2 p.m., followed by stability until about 4 p.m. The temperature drops after 6 p.m.
At the beginning of the month (September 10), the average high is around 19.9°C with a low of around 7.3°C. Towards the second third of the month (September 20), the average high is 15.6°C and the average low is 5.5°C.
There are about 83.9mm of rain in September.
The majority of the winds come from the west at this time, so they are warm. However, if a post-tropical system appears, the wind can come from the west or from the east.
Sunrise is around 6:26 a.m. and sunset is around 7 p.m. There are approximately 12h35min of sunshine per day.
October
The days are cooler, but the colours in the trees are beautiful. At the beginning of the month, the fall foliage is at its peak.
The average temperature is around 5.4°C, with a daily maximum of 9.8°C and a minimum of 1°C.
There is an average high of 11°C with a low of 1.8°C, at the beginning of the month, that is, before the closing of the Véloroute des Bleuets, on October 15.
There is about 63.5mm of rainfall throughout the month.
In October, the winds come mainly from the west. Due to the displacement of the jet stream with the change of season, the northwest wind is increasingly present.
The sun rises around 7:05 a.m. and sets around 6 p.m. There are about 10h05min of sunlight per day.
