Blaine, Washington Weather by Month

Blaine is a charming city located in Whatcom County, Washington, United States. Situated on the northernmost point of the contiguous United States, Blaine is bordered by Semiahmoo Bay to the west and the Canadian border to the north, making it a significant border town with British Columbia. The city covers an area of approximately 8.5 square miles and has a population of around 5,000 residents, according to the latest census data. Blaine is known for its stunning natural beauty, rich history, and strategic location.

Geographically, Blaine is part of the Pacific Northwest, characterized by its rugged coastline, dense forests, and temperate climate. The city offers breathtaking views of the Pacific Ocean and the Cascade Mountains, making it a popular destination for outdoor enthusiasts. The nearby Drayton Harbor and Semiahmoo Spit provide ample opportunities for water-related activities such as boating, fishing, and bird watching.

Blaine is home to several notable landmarks and institutions. One of the most famous is the Peace Arch, an international monument situated on the Canada–US border, symbolizing peace and friendship between the two nations. The city also features the Blaine Marine Park, a scenic waterfront park with trails, picnic areas, and a public pier. While Blaine does not host any major universities, it is within close proximity to Western Washington University in Bellingham, offering higher education opportunities.

Climate and Weather Overview

Blaine experiences a maritime climate, characterized by mild, wet winters and cool, dry summers. This type of climate is typical for the Pacific Northwest, with moderate temperature variations and significant rainfall, particularly in the winter months. The city receives a moderate amount of precipitation throughout the year, with snowfall being rare but possible during the winter.

Average Monthly Climate Data

Month Average Temperature (°F) Average Precipitation (in) Average Sunny Days
January 40.0 4.8 7
February 42.0 3.4 8
March 46.0 3.3 11
April 50.0 2.5 13
May 56.0 2.1 15
June 60.0 1.7 18
July 64.0 1.1 22
August 64.0 1.3 21
September 59.0 1.8 17
October 51.0 3.3 12
November 44.0 5.2 7
December 39.0 5.6 6

Weather by Month


January in Blaine is characterized by cold temperatures, with average lows around 34°F and highs reaching about 45°F. The month sees significant precipitation, averaging around 4.8 inches, mostly in the form of rain.

Natural Disasters

Blaine occasionally experiences winter storms in January, which can lead to heavy rainfall and, less frequently, snow and icy conditions.


Inside Activities: Indoor activities such as visiting local museums, enjoying performances at community theaters, and exploring the Blaine Library are popular.

Outside Activities: Despite the rain, outdoor enthusiasts can enjoy storm watching, beachcombing, and bird watching along the coast.


February remains cold with similar temperature patterns to January. Average lows are around 36°F, and highs reach about 47°F. Precipitation averages 3.4 inches.

Natural Disasters

Winter storms continue to pose a threat, although they are less frequent than in January.


Inside Activities: Cultural events and workshops at local community centers, as well as library programs, offer indoor entertainment.

Outside Activities: Outdoor activities include beach walks and visiting local parks to enjoy the winter scenery.


March marks the beginning of spring with temperatures starting to warm up. Average lows are around 38°F, and highs reach about 50°F. Precipitation averages around 3.3 inches.

Natural Disasters

Flooding can occur due to heavy spring rains, although it is not a common occurrence.


Inside Activities: Spring crafts and indoor markets become popular as residents anticipate the warmer weather.

Outside Activities: Early spring hiking and bird watching at local parks are enjoyable as the flora begins to bloom.


April sees a more noticeable increase in temperatures, with lows around 41°F and highs averaging 55°F. Rainfall decreases slightly to an average of 2.5 inches.

Natural Disasters

The risk of natural disasters decreases, but heavy rains can still cause localized flooding.


Inside Activities: Art exhibits, cultural presentations, and indoor sports continue to draw crowds.

Outside Activities: Gardening, fishing, and visiting local parks are popular as the weather becomes more favorable.


May brings significantly warmer temperatures with lows around 46°F and highs reaching 62°F. Precipitation averages 2.1 inches.

Natural Disasters

Thunderstorms are more frequent, sometimes accompanied by hail or strong winds.


Inside Activities: Indoor concerts, theater performances, and community events provide cultural experiences.

Outside Activities: Farmers’ markets, outdoor festivals, and picnics become common as the weather improves.


June is the start of summer with temperatures ranging from lows of 51°F to highs of 68°F. It is one of the drier months, with an average precipitation of 1.7 inches.

Natural Disasters

The risk of natural disasters is low, but dry conditions can increase the risk of wildfires.


Inside Activities: Educational programs and community events continue to attract locals and visitors.

Outside Activities: Hiking, biking, and fishing are popular as residents take advantage of the warm weather.


July is the warmest month with average lows around 55°F and highs reaching 71°F. Precipitation is lowest at 1.1 inches, with frequent sunny days.

Natural Disasters

Heatwaves can occur, but severe weather such as thunderstorms is also possible.


Inside Activities: Visiting air-conditioned museums and attending indoor events are favored during hot spells.

Outside Activities: Swimming, boating, and attending outdoor concerts are popular summertime activities.


August remains warm with temperatures ranging from lows of 55°F to highs of 70°F. Precipitation averages 1.3 inches, mostly from occasional thunderstorms.

Natural Disasters

Similar to July, thunderstorms and heatwaves are the primary weather concerns.


Inside Activities: Indoor sports and community center events provide relief from the summer heat.

Outside Activities: Hiking, camping, and participating in local fairs and festivals are common.


September sees a gradual cooling with lows around 50°F and highs of 65°F. Precipitation averages 1.8 inches.

Natural Disasters

The risk of severe weather decreases, but occasional thunderstorms can still occur.


Inside Activities: Fall arts and crafts fairs, along with cultural events, are popular.

Outside Activities: Apple picking, hiking, and enjoying the fall foliage at local parks and preserves are favored activities.


October brings cooler temperatures with lows around 44°F and highs reaching 59°F. Precipitation averages 3.3 inches.

Natural Disasters

The likelihood of natural disasters is low, although early frost can impact agriculture.


Inside Activities: Halloween events and indoor fall festivals attract families.

Outside Activities: Leaf peeping, hayrides, and visiting pumpkin patches are popular outdoor activities.


November sees further cooling with lows around 38°F and highs averaging 50°F. Precipitation averages 5.2 inches, transitioning from rain to occasional snow by the end of the month.

Natural Disasters

Early winter storms can occur, but they are generally mild.


Inside Activities: Holiday craft fairs and indoor community gatherings begin to take place.

Outside Activities: Hiking and preparing for winter sports are common as residents enjoy the last of the fall weather.


December is characterized by cold temperatures with lows around 33°F and highs of 45°F. Precipitation averages 5.6 inches, mostly as rain.

Natural Disasters

Winter storms and heavy rainfall can disrupt travel and daily activities.


Inside Activities: Holiday events, indoor markets, and family gatherings are prevalent during the festive season.

Outside Activities: Beach walks, storm watching, and visiting local parks provide outdoor entertainment.

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