Climate for Station: Blaine, Washington, United States
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Climate Analysis & Overview
The climate profile for Blaine, Washington, reveals a complex interplay of warming and cooling trends. Over the past decade, there has been a notable warming in low temperatures, contrasting with a slight cooling in high temperatures. Meanwhile, the all-time trends suggest a more stable climate with minor fluctuations. The precipitation pattern has become slightly more even, indicating a shift in how rain is distributed throughout the year.
Marine Climate Dynamics
Blaine, located at 48.9947°N, 122.7619°W in Whatcom County, Washington, experiences a temperate marine climate, classified as Cfb in the Köppen system. This classification is characterised by mild, wet winters and cool, dry summers. The proximity to the Pacific Ocean moderates temperature extremes, while the Cascade Range to the east influences precipitation patterns by capturing moist air masses.
Temperature Trends: A Mixed Bag
Over the past decade, Blaine has witnessed diverging temperature trends. High temperatures have experienced a slight cooling of -0.14°C (-0.25°F), while low temperatures have warmed by a significant 1.04°C (1.88°F). This warming of the lows could indicate milder nights, possibly influenced by increased cloud cover or urban heat effects. In terms of all-time trends, high temperatures have shown a negligible cooling of -0.00°C (-0.00°F), while lows have warmed by 0.24°C (0.43°F), suggesting a long-term stabilisation with minor warming.
Precipitation Patterns: Evening Out
The Precipitation Concentration Index (PCI) for Blaine has decreased from a baseline of 12.95 to a current value of 10.97. This change indicates that precipitation is becoming more evenly distributed throughout the year, reducing the occurrence of intense, isolated rainfall events. A PCI below 10 is considered very even, so Blaine is approaching a more balanced precipitation pattern, which could be beneficial for agriculture and water management.
Temperature Extremes: Records Hold Steady
Blaine's historical temperature records remain notable, with a maximum of 35.0°C (95.0°F) and a minimum of -18.3°C (-0.9°F). These extremes highlight the potential for both hot summer days and cold winter nights, although the moderating influence of the nearby ocean generally prevents such extremes from being frequent.
Regional Climate Goals and Implications
In the context of the United States' regional climate goals, which aim to reduce greenhouse gas emissions and enhance climate resilience, Blaine's warming low temperatures and more evenly distributed precipitation may align with broader trends of climate change adaptation. These shifts could influence local strategies for energy use, infrastructure planning, and natural resource management. The region's climate dynamics underscore the importance of continued monitoring and adaptation efforts to mitigate potential impacts on the community and environment.
Station Statistics
10-Year Trend
High: -0.25 °F/decade
Low: +1.88 °F/decade
Rain: -0.001 in/decade
25-Year Trend
High: +0.64 °F/decade
Low: +1.09 °F/decade
Rain: +0.008 in/decade
50-Year Trend
High: +0.29 °F/decade
Low: +1.07 °F/decade
Rain: +0.008 in/decade
All-Time Trend
High: -0.00 °F/decade
Low: +0.43 °F/decade
Rain: +0.005 in/decade
Percentage Above-Average Days
Last 12 Months: 54.8%
This Year: 83.0%
Precipitation Concentration Index (PCI) ℹ️
Last 12 Months: 11.0
Historical Average: 12.9
Percentile Rank of Last 12 Months ℹ️
High: 82nd percentile
Low: 98th percentile
Rain: 95th percentile
Change in Variance ℹ️
High: +1.1%
Low: +4.1%
Intraday: -26.6%
Data Coverage
83.7%
First Year of Data
1893
Station Location
Historical Weather Records
| Max High | Avg High | Min High | Max Avg | Avg Avg | Min Avg | Max Low | Avg Low | Min Low | Max Precipitation | Avg Precipitation | Max Snow | Avg Snow | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Record | 95.00 °F | — | 8.06 °F | 91.80 °F | — | 2.44 °F | 69.98 °F | — | -0.94 °F | 3.81 in | — | 20.00 in | — |
| January | 64.04 °F | 43.02 °F | 8.06 °F | 56.84 °F | 38.73 °F | 5.25 °F | 52.52 °F | 31.78 °F | -0.94 °F | 3.81 in | 0.21 in | 9.41 in | 0.17 in |
| February | 68.00 °F | 46.77 °F | 11.26 °F | 55.40 °F | 40.03 °F | 5.61 °F | 51.08 °F | 33.25 °F | -0.94 °F | 2.22 in | 0.16 in | 20.00 in | 0.10 in |
| March | 78.08 °F | 51.49 °F | 26.06 °F | 64.22 °F | 44.41 °F | 24.42 °F | 53.96 °F | 35.82 °F | 10.94 °F | 2.78 in | 0.14 in | 12.01 in | 0.04 in |
| April | 80.06 °F | 57.26 °F | 39.92 °F | 67.21 °F | 48.93 °F | 35.73 °F | 55.04 °F | 39.63 °F | 21.02 °F | 2.60 in | 0.10 in | 0.79 in | 0.00 in |
| May | 87.26 °F | 63.68 °F | 46.94 °F | 74.43 °F | 55.08 °F | 41.43 °F | 62.06 °F | 44.61 °F | 21.02 °F | 1.57 in | 0.08 in | 0.00 in | 0.00 in |
| June | 95.00 °F | 68.60 °F | 51.08 °F | 91.80 °F | 59.77 °F | 46.92 °F | 69.98 °F | 49.38 °F | 30.92 °F | 1.90 in | 0.07 in | 0.00 in | 0.00 in |
| July | 95.00 °F | 72.99 °F | 55.04 °F | 80.74 °F | 64.02 °F | 49.98 °F | 69.26 °F | 51.88 °F | 33.98 °F | 1.64 in | 0.04 in | 0.00 in | 0.00 in |
| August | 91.94 °F | 72.40 °F | 57.92 °F | 81.97 °F | 64.21 °F | 54.09 °F | 68.00 °F | 51.65 °F | 33.08 °F | 1.67 in | 0.05 in | 0.00 in | 0.00 in |
| September | 87.08 °F | 66.71 °F | 46.94 °F | 75.07 °F | 59.32 °F | 47.12 °F | 69.08 °F | 47.44 °F | 24.98 °F | 2.20 in | 0.09 in | 0.00 in | 0.00 in |
| October | 78.08 °F | 57.71 °F | 35.96 °F | 67.24 °F | 51.01 °F | 24.67 °F | 62.24 °F | 42.25 °F | 19.04 °F | 3.59 in | 0.16 in | 2.99 in | 0.00 in |
| November | 71.06 °F | 49.34 °F | 13.05 °F | 60.98 °F | 43.33 °F | 6.85 °F | 57.92 °F | 36.88 °F | 5.00 °F | 3.31 in | 0.23 in | 7.99 in | 0.03 in |
| December | 62.96 °F | 44.11 °F | 12.02 °F | 56.48 °F | 37.90 °F | 2.44 °F | 55.04 °F | 33.26 °F | -0.94 °F | 2.60 in | 0.21 in | 12.99 in | 0.12 in |
Data Visualisations
Remove WatermarksCurrent Year Climate Trends vs Historical






Max Temperature this Year | 1 of 6
Climate 12-Month Moving Averages






Max Temperature 12-Month MA | 1 of 6
Daily Data Points and Averages Throughout the Year





Average Max Temperature Throughout Year | 1 of 5
