Along the coast and throughout the greater part of western Oregon in general, snow seldom falls on the lowlands to a greater depth than a few inches, and never lies long. Grass is green all winter. The average temperature for the year in the Willamette Valley is about 52 degrees, the highest and lowest being about 100 degrees and 20 degrees, though occasionally a much lower temperature is reached.
The average rainfall is about fifty or fifty-five inches in the Willamette Valley, and along the coast seventy-five inches, or even more at some points—figures that bring many a dreary night and day to mind, however fine the effect on the great evergreen woods and the fields of the farmers. The rainy season begins in September or October and lasts until April or May. Then the whole country is solemnly soaked and poulticed with the gray, streaming clouds and fogs, night and day, with marvelous constancy. Towards the beginning and end of the season a good many bright days occur to break the pouring gloom, but whole months of rain, continuous, or nearly so, are not at all rare. Astronomers beneath these Oregon skies would have a dull time of it. Of all the year only about one fourth of the days are clear, while three fourths have more or less of fogs, clouds, or rain.
The fogs occur mostly in the fall and spring. They are grand, far-reaching affairs of two kinds, the black and the white, some of the latter being very beautiful, and the infinite delicacy and tenderness of their touch as they linger to caress the tall evergreens is most exquisite. On farms and highways and in the streets of towns, where work has to be done, there is nothing picturesque or attractive in any obvious way about the gray, serious-faced rainstorms. Mud abounds. The rain seems dismal and heedless and gets in everybody’s way. Every face is turned from it, and it has but few friends who recognize its boundless beneficence. But back in the untrodden woods where no axe has been lifted, where a deep, rich carpet of brown and golden mosses covers all the ground like a garment, pressing warmly about the feet of the trees and rising in thick folds softly and kindly over every fallen trunk, leaving no spot naked or uncared-for, there the rain is welcomed, and every drop that falls finds a place and use as sweet and pure as itself. An excursion into the woods when the rain harvest is at its height is a noble pleasure, and may be safely enjoyed at small expense, though very few care to seek it. Shelter is easily found beneath the great trees in some hollow out of the wind, and one need carry but little provision, none at all of a kind that a wetting would spoil. The colors of the woods are then at their best, and the mighty hosts of the forest, every needle tingling in the blast, wave and sing in glorious harmony.
“’T were worth ten years of peaceful life, one glance at this array.”
The snow that falls in the lowland woods is usually soft, and makes a fine show coming through the trees in large, feathery tufts, loading the branches of the firs and spruces and cedars and weighing them down against the trunks until they look slender and sharp as arrows, while a strange, muffled silence prevails, giving a peculiar solemnity to everything. But these lowland snowstorms and their effects quickly vanish; every crystal melts in a day or two, the bent branches rise again, and the rain resumes its sway.
While these gracious rains are searching the roots of the lowlands, corresponding snows are busy along the heights of the Cascade Mountains. Month after month, day and night the heavens shed their icy bloom in stormy, measureless abundance, filling the grand upper fountains of the rivers to last through the summer. Awful then is the silence that presses down over the mountain forests. All the smaller streams vanish from sight, hushed and obliterated. Young groves of spruce and pine are bowed down as by a gentle hand and put to rest, not again to see the light or move leaf or limb until the grand awakening of the springtime, while the larger animals and most of the birds seek food and shelter in the foothills on the borders of the valleys and plains.
The lofty volcanic peaks are yet more heavily snow-laden. To their upper zones no summer comes. They are white always. From the steep slopes of the summit the new-fallen snow, while yet dry and loose, descends in magnificent avalanches to feed the glaciers, making meanwhile the most glorious manifestations of power. Happy is the man who may get near them to see and hear. In some sheltered camp nest on the edge of the timberline one may lie snug and warm, but after the long shuffle on snowshoes we may have to wait more than a month ere the heavens open and the grand show is unveiled. In the mean time, bread may be scarce, unless with careful forecast a sufficient supply has been provided and securely placed during the summer. Nevertheless, to be thus deeply snowbound high in the sky is not without generous compensation for all the cost. And when we at length go down the long white slopes to the levels of civilization, the pains vanish like snow in sunshine, while the noble and exalting pleasures we have gained remain with us to enrich our lives forever.
The fate of the high-flying mountain snow-flowers is a fascinating study, though little may we see of their works and ways while their storms go on. The glinting, swirling swarms fairly thicken the blast, and all the air, as well as the rocks and trees, is as one smothering mass of bloom, through the midst of which at close intervals come the low, intense thunder-tones of the avalanches as they speed on their way to fill the vast fountain hollows. Here they seem at last to have found rest. But this rest is only apparent. Gradually the loose crystals by the pressure of their own weight are welded together into clear ice, and, as glaciers, march steadily, silently on, with invisible motion, in broad, deep currents, grinding their way with irresistible energy to the warmer lowlands, where they vanish in glad, rejoicing streams.
In the sober weather of Oregon lightning makes but little show. Those magnificent thunderstorms that so frequently adorn and glorify the sky of the Mississippi Valley are wanting here. Dull thunder and lightning may occasionally be seen and heard, but the imposing grandeur of great storms marching over the landscape with streaming banners and a network of fire is almost wholly unknown.
Crossing the Cascade Range, we pass from a green to a gray country, from a wilderness of trees to a wilderness of open plains, level or rolling or rising here and there into hills and short mountain spurs. Though well supplied with rivers in most of its main sections, it is generally dry. The annual rainfall is only from about five to fifteen inches, and the thin winter garment of snow seldom lasts more than a month or two, though the temperature in many places falls from five to twenty-five degrees below zero for a short time. That the snow is light over eastern Oregon, and the average temperature not intolerably severe, is shown by the fact that large droves of sheep, cattle, and horses live there through the winter without other food or shelter than they find for themselves on the open plains or down in the sunken valleys and gorges along the streams.