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Climate

Lethbridge has a moderate climate with warmer winters and milder summers than average. This moderation is heavily influenced by Chinook winds which occur on average 11 times throughout the year. The area also enjoys one of the highest amounts of sunshine in the country, approximately 2,400 hours per year.  Proximity to the mountains protects the city from the influence of strong northwest and southwest winds which are associated with blizzard conditions. A comparatively high elevation (928.7 m) combined with Chinook conditions, results in a reduction of severity and duration of winter cold periods and alleviates the extreme summer heat.

Lethbridge enjoys the highest winter and annual mean temperatures on the prairies, yet is cooler than many southern prairie locations during the summer. This is in part from the relatively consistant 20km/hr winds we receive. Another benefit of this breeze is that we have very few flies or mosquitos! Additionally, the relative dryness makes for very comfortable living throughout the year.

Lethbridge's weather and forecast right now .......

Average summer Temperature = 25
Average winter Temperature = 0 
Average hours of sunlight = 2400
Average Yearly snowfall = 160 cm
Average Yearly Rainfall = 262 mm 
 

Weather Records at lethbridge 1938-2003

Month

Record Low

Average Low

Average Temp

Average High

Record High

Average Rain

Average Snow

January

-42.8 (Jan 3, 1950)

-13.8

-7.8

-1.8

16.7 (Jan 19, 1944)

0.1 mm

21.9 cm

February

-42.2 (Feb 9, 1939)

-10.7

-4.6

1.5

21.8 (Feb 27, 1992)

0.4 mm

13.5 cm

March

-38.0 (Mar 8, 2002)

-6.5

-0.2

6.0

26.8 (Mar 30, 2004)

1.4 mm

25.5 cm

April

-25.6 (Apr 11, 1940)

-0.9

6.0

12.9

31.1 (Apr 28, 1939)

16.1 mm

16.3 cm

May

-11.7 (May 1, 1954)

-4.2

11.3

18.2

34.2 (May 30, 1986)

49.4 mm

4.0 cm

June

-1.7 (Jun 1, 1951)

8.6

15.5

22.3

38.3 (Jun 23, 1941)

63.0 mm

0.0 cm

July

0.9 (Jul 16, 1999)

10.5

18.0

25.5

39.4 (Jul 10, 1973)

47.5 mm

0.0 cm

August

-1.0 (Aug 25, 1992)

10.0

17.7

25.4

38.9 (Aug 3, 2001)

45.1 mm

0.8 cm

September

-9.4 (Sep 25, 1972)

5.1

12.6

20.1

36.7 (Sep 3, 1950)

37.6 mm

2.1 cm

October

-26.7 (Oct 31, 1984)

0.0

7.0

14.0

31.7 (Oct 4, 1943)

8.8 mm

10.4 cm

November

-34.7 (Nov 21, 1996)

-7.2

-1.5

4.3

22.8 (Nov 6, 1949)

1.2 mm

17.3 cm

December

-42.8 (Dec 29, 1968)

-12.0

-6.2

-0.2

19.6 (Dec 30, 1984)

0.5 mm

18.8 cm