To determine the snowfall in Washington State, you must first know when to expect it. Then, you need to know the average snowfall depth. You should also be aware of the seasonal variations in precipitation. Below are the typical precipitation types and percentages in Washington State. If you are planning to visit Washington State, you should know when to expect snowfall in the state. The average snowfall depth in Washington State is 1.8 feet.
Months to expect snowfall in Washington State
The climate in Washington State varies by region, with the west coast characterized by cool and moist summers and mild winters. The eastern part of the state, however, is much drier with hot summers and cold winters. The precipitation and wind patterns also vary. For the best weather forecast, choose a location within the state and plan accordingly. The average snowfall in Washington State is eight to twelve inches per year.
The precipitation in the mountains of the state is typically low, but a winter snowstorm will always be welcome. This year, the state received an unusually high snowfall in December and January, which was followed by relatively dry months in February and March. The snowpack in Washington State is expected to be below average by the end of April. As of April 4, the snowpack remained below average across the state.
The CPC one-month temperature outlook predicts that average temperatures in the eastern part of the state will be above average. Precipitation levels in the Puget Sound region and Olympic Peninsula are similar. In terms of rainfall, there is a high chance of rain in these months, but less so in the rest of the state. If you plan to visit the state during winter, check out the weather forecast for the next four months.
Average snowfall depth
If you’ve ever wondered how deep the snowpack is in Washington State, you’re not alone. The Northwest Climate Assessment Center has compiled data on snowdepth for Washington State for the last 70 years. The data includes measurements from Mount Baker to Mount Hood and are updated semimonthly. The spreadsheet provides a comprehensive view of snow depth throughout the winter and early spring. The graph below is a summary of average snowdepths for 10 of the state’s most important sites.
The Cascade Mountains have reported snowpacks of 100 to 150% of normal. Other areas report snowpacks that are less than normal. The snowpack along the Cascades averages about 15 feet, with a few spots below normal. At the highest elevation, Chinook Pass recorded more than 200 inches of snow. The snowdepth in Mount McLoughlin is about 50 inches higher than average for February 1 of this year.
To get an accurate measurement of snowfall depth, you need to know the amount of snow that has fallen on the ground. The average snow depth is three inches. If 0.4 inches falls on the ground, it gets reported as “traces.” Similarly, if 50 percent of the ground is covered with snow, it is reported as “traces” (T). For mountainous areas, however, measurements should be taken from an exposed clearing in the trees.
The data for Blue Lake were collected from decades of abundant snowfall. Then, the data from Cayuse and Jasper sites were obtained from years of similar snowfall. These three locations are about 12 to 20 miles due east of the major Cascade volcano. The convergence zone effect may enhance precipitation and snowfall. If you are looking for a map of average snowfall depth in Washington State, you can refer to it and get a good idea of what to expect.
The climate in Washington State is predominantly continental. In the west, winters are milder and summers are warmer than in the eastern part of the state. The Cascade Range blocks easterly air flow. Eastern Washington’s climate is also influenced by mountainous terrain. Most air masses cross the region under the influence of westerly winds, which is a combination of marine and continental climates. However, the average snow depth in Washington State is not higher than six inches.
In midwinter, the snowline is approximately 1,500 to 2,000 feet above sea level. Maximum snow depth is typically reached in the first half of March. Snow cover is composed of approximately 30 percent water in December and forty percent water in March. The snowpack density increases from thirty percent water to forty-five percent by the first week of March. This increase in snowfall makes the state ideal for skiing in the winter months.
Seasonal variations in precipitation
Washington State experiences a wide range of precipitation throughout the year, primarily due to its location on the middle latitude. The Cascade Mountains and Pacific Ocean protect the state from colder winter air, resulting in the typical continental climate found west of the Cascades. The mountains also trap much of the state’s precipitation and can produce over two hundred inches of snow each year. Washington State’s climate is influenced by various natural factors, including the shape of the state’s mountains, the ocean’s influence on the state, and the presence of semi-permanent high and low-pressure regions over the North Pacific Ocean. While these various influences can produce entirely different climates in a relatively short distance, it is important to note that Washington State is relatively temperate.
In the region northeast of the Olympic Mountains, precipitation varies significantly. The wettest months are October through March, with average rainfall of five inches during November. The driest months are July and August. In contrast, the eastern interior of the state experiences little more than ten inches of rain annually. On average, precipitation ranges from a low of 26.0 inches in 1929 to a high of 55.0 inches in 1996. The wettest five-year interval in Washington State was between 1995 and 1999.
Climate change is projected to decrease precipitation in Washington State by the end of the century. Warmer summers will cause more water to evaporate from the snowpack, increasing the need for irrigation. A combination of warmer temperatures and drier summers could also cause an increase in the number of wildfires. Climate models may be able to explain some of the seasonal variations, but not all. They cannot explain the effects observed during May-June.
In summer, rainfall is usually low, with measurable amounts occurring only on three to five days per month. The average number of clear days varies from five to ten in winter. In spring, the number of clear days can reach twenty-eight. Precipitation is also highly seasonal; rainfall varies from a single day to multiple days every month. In winter, measurable precipitation is common, and is even higher in higher elevations.
The NW Climate Toolbox Climate Tracker allows users to plot temperature, precipitation, relative humidity, solar radiation, and more. In addition to these, the Mountain Snow Graph feature displays the average depth and snowfall for 15 cities in Washington. Using this, users can create custom NW Plots based on the data from a single day. The National Diurnal Climatology also allows users to plot daily data.
Western Washington experience less variability than Eastern Washington. This is largely due to the Pacific Ocean’s influence on the state. Maritime air from the Pacific produces cloud decks, which prevent radiational cooling. This means that year-round low temperatures can be mild during July and cool in December. The climate of the state changes significantly in different seasons, resulting in extreme seasonal variations in precipitation. There is no uniform climate in Washington State, so climate predictions for this region are highly variable.