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Monthly Historical Averages
Slave Lake, AB
Your May weather outlook is here!
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May
Average Temperature
High
15°
Feels 14
Low
3°
Feels 1
Average Precipitation
10 Days
Rain amount
66.1mm
Snow amount
3.8cm
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Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
16°
3
12°
4
10°
5
13°
6
18°
7
16°
8
17°
9
15°
10
16°
11
16°
12
15°
13
15°
14
15°
15
15°
16
15°
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Saturday, May 2, 2026
Day
16°
Feels 15
Wind
18 km/h SW
Gust
27 km/h
Humidity
39%
P.O.P
20%
Night
8°
Feels 5
Wind
21 km/h W
Gust
30 km/h
Humidity
66%
P.O.P
30%
Historical Averages
May 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.