Seasons in Washington State

Climate of the state varies greatly from pacific coasts on west to Cascade Mountains on east. Coastal regions are having oceanic weather conditions with average annual temperature of 52 °F (11 °C) and greater amount of precipitation. Regions on east side of the mountains are much drier and colder with average annual temperature of 39 °F (4 °C).

Such differences of weather within one state are explained by rain shadow effects. The Cascade Mountains are interfering movement of oceanic air masses, making east slopes and further inland territories drier. In the western regions, there are contrasting weather conditions, a cooling below 32 °F (zero 0 °C) in winter and heat above 86 °F (30 °C) in summer.


Weather and Climate

Spring in Washington State

In western portion of the state spring means decreasing of rains and growing temperatures. At March there is probability of some insignificant bits of snow. Difference between eastern and western portions of the state at spring isn’t great unless first is warmer by couple of degrees. At March stars season of whale watching.

One might thought that spring in the state isn’t so rainy. Yet actual rainy season remains until middle of June. Thus travelers should pack some respective clothes. In addition oceanic breezes are making air colder than it may seem according to thermometer. In general coastal areas are rather cool and inland territories are cloudy.

Climate of the Spring Months

March
Max average t°: 54 °F (+12 °C)
Min average t°: 35 °F (+2 °C)
Sundial in the day: 6 hours
Rainy days: 18 days
Precipitation: 4.8" (121 mm)
April
Max average t°: 60 °F (+16 °C)
Min average t°: 38 °F (+3 °C)
Sundial in the day: 7 hours
Rainy days: 16 days
Precipitation: 3.3" (83 mm)
May
Max average t°: 67 °F (+19 °C)
Min average t°: 43 °F (+6 °C)
Sundial in the day: 8 hours
Rainy days: 12 days
Precipitation: 1.9" (49 mm)

(Olympia)

Spring Holidays

2nd Sunday in May – Mother’s Day.

Last Monday in May – Memorial Day.

Summer in Washington State

At June weather of the state gradually improves. In this way by coming of July it gains perfect state for different types of outdoor activities. Average daytime temperature reaches marks of 32 to 68 °F (17-20 °C). Most of days of July and August are warm and sunny. Precipitation lowers to about 1.2” (33 mm) per month thus rains are out of concern.

Hiking, fishing and other kinds of entertainment in the bosom of nature are available on western side from Cascades for there is lush greenery and numerous natural sights. While dry eastern part of the state offers some extreme recreation.


Climate of the Summer Months

June
Max average t°: 72 °F (+22 °C)
Min average t°: 48 °F (+9 °C)
Sundial in the day: 8 hours
Rainy days: 9 days
Precipitation: 1.6" (40 mm)
July
Max average t°: 77 °F (+25 °C)
Min average t°: 51 °F (+10 °C)
Sundial in the day: 9 hours
Rainy days: 5 days
Precipitation: 0.8" (20 mm)
August
Max average t°: 78 °F (+25 °C)
Min average t°: 51 °F (+10 °C)
Sundial in the day: 10 hours
Rainy days: 5 days
Precipitation: 1.1" (29 mm)

(Olympia)

Summer Holidays

3rd Sunday in June – Father’s Day.

July 4 – Independence Day.

Autumn in Washington State

Weather of September is perfect for hiking, biking and boating. This month has temperature range of summer and brings exceptional beauty to local landscapes. Skies are mostly sunny. Oddly enough at best time to visit the state there is outflow of tourists due to concerns about rain. However average level of precipitation at September is only 1.9” (49 mm).

At October temperature drops to about 50 °F (10 °C) and amount of precipitation grows reaching 6.2” (158 mm) at November. At last month of autumn low season starts thus this is suitable time for sightseeing.


Climate of the Autumn Months

September
Max average t°: 72 °F (+22 °C)
Min average t°: 47 °F (+8 °C)
Sundial in the day: 7 hours
Rainy days: 8 days
Precipitation: 2.1" (52 mm)
October
Max average t°: 62 °F (+16 °C)
Min average t°: 41 °F (+5 °C)
Sundial in the day: 5 hours
Rainy days: 14 days
Precipitation: 4.3" (109 mm)
November
Max average t°: 51 °F (+11 °C)
Min average t°: 37 °F (+3 °C)
Sundial in the day: 3 hours
Rainy days: 20 days
Precipitation: 7.6" (192 mm)

(Olympia)

Autumn Holidays

1st Monday in September – Labor Day.

November 10 – Veterans Day.

4th Thursday in November – Thanksgiving.

Winter in Washington State

Started at October rainy season reigns in the state through whole winter. Range of average temperatures is between 41-23 °F  (5 °C and -5 °C). Frequent precipitation takes form of light showers or drizzle. In case of negative temperatures it snows. In general precipitation is stretched though whole season.

At late November starts skiing season. Other types of winter recreation in mountains are available too. And suitable weather conditions will last April or even late May. In this way the best time to visit the state is completely depends on planned activities for each season offers legitimately good entertainment.

Climate of the Winter Months

December
Max average t°: 46 °F (+7.5 °C)
Min average t°: 34 °F (+1 °C)
Sundial in the day: 2 hours
Rainy days: 19 days
Precipitation: 7.9" (200 mm)
January
Max average t°: 45 °F (+3 °C)
Min average t°: 32 °F (0 °C)
Sundial in the day: 2 hours
Rainy days: 20 days
Precipitation: 7.9" (201 mm)
February
Max average t°: 50 °F (+10 °C)
Min average t°: 34 °F (+1 °C)
Sundial in the day: 4 hours
Rainy days: 16 days
Precipitation: 5.7" (144 mm)

(Olympia)

Winter Holidays

December 25 – Christmas.

January 2 – New Year’s Holiday.

3rd Monday in January – Martin Luther King Jr. Day.

3rd Monday in February – President’s Day.


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