Slave Lake (AB) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Slave Lake.
Climate overview of Slave Lake
Slave Lake, Alberta, Canada, sees big temperature differences between seasons, with July peaking at 22°C (72°F) and January dropping to -7°C (19°F).
With around 596 mm (23 in) of annual rain/snowfall, the city has moderate precipitation levels. July is the wettest month and February the driest. It also has a distinct dry season from October to April.
Slave Lake Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Slave Lake — and find the best time to visit.
Monthly Temperature in Slave Lake
Visitors to Slave Lake can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a comfortable 22°C (72°F) in July to a very cold -7°C (19°F) in the coolest month, January.
Nights vary from 11°C (52°F) in July to around -17°C (1°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Slave Lake
Generally, Slave Lake experiences moderate precipitation patterns, averaging 596 mm (23 in) yearly. The climate in Slave Lake shows significant variation throughout the year. Expect high rainfall in July, the wettest month, with an average of 114 mm (4.5 in) of precipitation over 15 rainy days.
In contrast, the driest month February offers drier and sunnier days, with around 22 mm (0.9 in) of snowfall over 10 snowy days. For more details, please visit our Slave Lake Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Slave Lake
The weather does bring rainfall during this period, between 72 mm (2.8 in) and 114 mm (4.5 in). Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
Frequently asked questions about the climate in Slave Lake
What is the best time to visit Slave Lake?
August typically offers the most optimal weather in Slave Lake. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Slave Lake has a distinct dry season from October to April.
What temperatures can I expect in Slave Lake?
Daytime highs range from -7°C (19°F) in January to 22°C (72°F) in July. Nighttime lows range from -17°C (1°F) to 11°C (52°F). Temperatures vary considerably through the year.
How much rain does Slave Lake get?
Annual rainfall is around 596 mm (23 in). July is the wettest month with 114 mm (4.5 in), while February is the driest with 22 mm (0.9 in).
Slave Lake 3-Day Forecast
Slave Lake (AB) 3-Day Forecast
Slave Lake on the map
Slave Lake is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Niagara Falls
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19°C (66°F) 
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