Grand Forks Climate

 Grand Forks experiences a humid continental climate (Köppen climate) Humid continental Warm summer with a similar climate to the Okanagan Valley to the west. However, the Boundary area usually receives slightly colder and snowier winters and slightly hotter summer temperatures, due to its location away from large lakes. Daytime highs during the summer often top 30 C and surpass 40 C at least once every few years. Night temperatures often fall rapidly in summer, and frost is rare but not unheard of in June or September. Winter temperatures are moderately (seldom severely) cold, but definitely mild by Canadian standards. Some years may see only a few light snowfalls and intermittent snow cover, whereas others receive several large snowstorms and snow cover from December to March. Precipitation is higher than many other drier Southern Interior locations, but still fairly low.

The primary vegetation in the Grand Forks area is typical of the Southern BC dry belt. Sagebrush, bunchgrass, prickly pear cactus, arrowleaf balsamroot, ponderosa pine and douglas-fir dominate the valley bottom and south facing slopes. More mountainous species such as bearberry, lodgepole pine, western larch, englemann spruce, western red cedar and black cottonwood can be found along the Kettle and Granby Rivers and on north facing slopes.

Jan record high C = 16.1

Feb record high C = 19.4

Mar record high C = 24.0

Apr record high C = 31.7

May record high C = 36.1

Jun record high C = 37.0

Jul record high C = 42.2

Aug record high C = 39.4

Sep record high C = 36.7

Oct record high C = 30.0

Nov record high C = 18.9

Dec record high C = 25.0

year record high C = 42.2

Jan high C = -0.5

Feb high C = 3.2

Mar high C = 10.1

Apr high C = 15.7

May high C = 20.4

Jun high C = 24.1

Jul high C = 28.4

Aug high C = 28.7

Sep high C = 23.1

Oct high C = 13.8

Nov high C = 4.3

Dec high C = -1.3

year high C = 14.2

Jan mean C = -3.6

Feb mean C = -1.2

Mar mean C = 4.3

Apr mean C = 8.8

May mean C = 13.2

Jun mean C = 16.6

Jul mean C = 19.9

Aug mean C = 19.7

Sep mean C = 14.6

Oct mean C = 7.5

Nov mean C = 1.0

Dec mean C = -4.2

year mean C = 8.0

Jan low C = -6.7

Feb low C = -5.6

Mar low C = -1.6

Apr low C = 1.8

May low C = 5.9

Jun low C = 9.2

Jul low C = 11.3

Aug low C = 10.6

Sep low C = 6.1

Oct low C = 1.1

Nov low C = -2.4

Dec low C = -7.2

year low C = 1.9

Jan record low C = -38.9

Feb record low C = -34.4

Mar record low C = -22.8

Apr record low C = -8.3

May record low C = -8.3

Jun record low C = -1.7

Jul record low C = 1.1

Aug record low C = 0.0

Sep record low C = -6.1

Oct record low C = -14.0

Nov record low C = -29.0

Dec record low C = -37.8

year record low C = -38.9

Jan precipitation mm = 53.1

Feb precipitation mm = 32.8

Mar precipitation mm = 35.6

Apr precipitation mm = 44.9

May precipitation mm = 60.2

Jun precipitation mm = 62.5

Jul precipitation mm = 39.3

Aug precipitation mm = 29.1

Sep precipitation mm = 28.8

Oct precipitation mm = 34.7

Nov precipitation mm = 55.4

Dec precipitation mm = 58.1

year precipitation mm = 534.3

|Jan rain mm = 16.6

|Feb rain mm = 18.3

|Mar rain mm = 29.6

|Apr rain mm = 44.2

|May rain mm = 60.1

|Jun rain mm = 62.5

|Jul rain mm = 39.3

|Aug rain mm = 29.1

|Sep rain mm = 28.8

|Oct rain mm = 33.9

|Nov rain mm = 33.3

|Dec rain mm = 14.5

|year rain mm = 410.3

|Jan snow cm = 36.5

|Feb snow cm = 14.5

|Mar snow cm = 5.9

|Apr snow cm = 0.7

|May snow cm = 0.0

|Jun snow cm = 0.0

|Jul snow cm = 0.0

|Aug snow cm = 0.0

|Sep snow cm = 0.0

|Oct snow cm = 0.8

|Nov snow cm = 22.1

|Dec snow cm = 43.6

|year snow cm = 124.1

|unit precipitation days = 0.2 mm

|Jan precipitation days = 13.7

|Feb precipitation days = 10.0

|Mar precipitation days = 12.2

|Apr precipitation days = 12.5

|May precipitation days = 14.5

|Jun precipitation days = 13.4

|Jul precipitation days = 8.7

|Aug precipitation days = 7.3

|Sep precipitation days = 7.3

|Oct precipitation days = 10.4

|Nov precipitation days = 14.9

|Dec precipitation days = 13.4

|year precipitation days = 138.2

|unit rain days = 0.2 mm

|Jan rain days = 5.9

|Feb rain days = 6.8

|Mar rain days = 10.9

|Apr rain days = 12.4

|May rain days = 14.5

|Jun rain days = 13.4

|Jul rain days = 8.7

|Aug rain days = 7.3

|Sep rain days = 7.3

|Oct rain days = 10.3

|Nov rain days = 10.6

|Dec rain days = 3.8

|year rain days= 111.8

|unit snow days = 0.2 cm

|Jan snow days = 8.9

|Feb snow days = 4.3

|Mar snow days = 1.9

|Apr snow days = 0.3

|May snow days = 0.0

|Jun snow days = 0.0

|Jul snow days = 0.0

|Aug snow days = 0.0

|Sep snow days = 0.0

|Oct snow days = 0.3

|Nov snow days = 5.5

|Dec snow days = 10.4

|year snow days = 31.5