Weather in North Cascades

North Cascades weather varies greatly by season and location. From at least November to April much of the park is buried with heavy snows. The best weather is from June to September, when most of the trails are at least mostly melted out. The west slopes and high peaks catch the precipitation from the Pacific Ocean creating a lush evergreen forest, while the east slopes are warm and dry in the summer. The western slopes receive an average of 76 more inches of precipitation and 407 more inches of snowfall. Mountain weather, of course, is unpredictable all year.

Current Weather in the North Cascades Region

Averages and Records at North Cascades

Month	Avg High	Avg Low	Record High	Record Low	Avg Precip
January	39	30	63	2	10.03
February	43	32	61	2	6.76
March	49	34	75	16	6.82
April	57	38	89	25	5.01
May	64	44	101	32	3.88
June	69	48	96	35	2.96
July	76	52	107	41	1.58
August	76	53	108	40	1.70
September	70	49	98	33	3.04
October	57	43	80	20	6.94
November	45	36	74	7	12.02
December	39	31	58	-4	9.91

All temperatures are reported in Fahrenheit. All precipitation is reported in inches.