Local Climate Trends

Climate Stripes for Portland

Temperature Anomaly Heatmap

This heatmap shows seasonal temperature anomalies relative to the 20th-century average for each year from 1950 to 2024. Each row represents a season (Winter, Spring, Summer, Fall), and each column a year. Red shades indicate warmer-than-average seasons, while blue shades represent cooler-than-average ones. The shift from predominantly blue to red over time highlights the long-term warming trend across all seasons.

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Portland Climate At a Glance

Seasonal Temperature Trends

❄️
0.0°C
Winter
🌸
0.0°C
Spring
☀️
0.0°C
Summer
🍂
0.0°C
Fall

Trends in Hot and Cold Days

Temperature threshold data not available for this location.

Portland Annual Mean Temperature Trends

Annual Mean Temperature Trends

Temperature data shows warming trends for Portland based on NOAA NClimGrid climate data.

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Portland Hot and Cold Days

Days Above 90°F ⬇️ Download

Temperature threshold data for Portland shows changes in extreme heat days.

Few days below 32°F

Frequently Asked Questions About Portland's Climate

How much has Portland warmed since 1951?

Portland has warmed by 0.0°C on average since 1951. This warming trend is consistent with broader climate change patterns observed across the region.

What season has warmed the most in Portland?

Winter has experienced the most warming with 0.0°C of temperature increase since 1951. This seasonal variation is typical of mid-latitude climate change patterns.

How have precipitation patterns changed in Portland?

Precipitation patterns in Portland have remained relatively stable since 1951, though year-to-year variability continues to be significant.

Is the warming in Portland part of a larger trend?

Yes, the warming observed in Portland is consistent with regional and global climate change trends. The temperature increases align with patterns seen across TX and the broader United States, reflecting the impacts of human-caused climate change.

What climate data sources are used for Portland?

The climate data for Portland comes from NOAA's NClimGrid dataset, which provides gridded climate information based on weather station observations. The data represents the 0.49km grid cell nearest to Portland, located at coordinates 27.88°N, 97.32°W.

How reliable are the climate projections for Portland?

The historical climate trends shown for Portland are based on observed data from 1951 to present and are highly reliable. These trends provide insight into how the local climate has already changed and can inform expectations for continued warming, though specific future projections would require additional climate modeling.

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