Climate for Station: Green Bay, Wisconsin, United States

Green Bay's climate is marked by a modest warming trend, with a notable increase in temperature highs over the last decade. While the all-time trend shows a slight warming, recent years have seen more pronounced changes. Precipitation is becoming more evenly distributed, indicating a shift in rainfall patterns.

Köppen Climate Context

Green Bay, Wisconsin, falls under the Dfb category of the Köppen climate classification, which denotes a humid continental climate with no dry season and a warm summer. This classification is typical for regions with significant seasonal temperature differences, including warm to hot summers and cold winters. The city's location near the western shore of Lake Michigan influences its climate, moderating temperatures and contributing to humidity levels.

Temperature Trends Over Time

The all-time temperature trend for Green Bay reveals a slight warming, with highs increasing by 0.13°C (0.24°F) and lows by 0.02°C (0.04°F). This gradual rise reflects broader global warming patterns. However, the past decade has seen a more substantial increase, with highs rising by 1.47°C (2.65°F) and lows by 0.44°C (0.79°F). This recent trend suggests a more rapid warming, aligning with regional climate goals to monitor and mitigate temperature increases.

Extreme Temperature Records

Green Bay has experienced significant temperature extremes, with a record high of 40.0°C (104.0°F) and a record low of -37.8°C (-36.0°F). These extremes highlight the city's susceptibility to both intense heat and severe cold, characteristic of its continental climate. Such records are crucial for understanding the potential impacts of climate variability on local ecosystems and human activities.

Precipitation Patterns and PCI Insights

The Precipitation Concentration Index (PCI) for Green Bay has decreased from a baseline of 12.4 to a current value of 11.1, indicating a more even distribution of rainfall events. A PCI under 10 is considered very even, and while Green Bay's PCI is not quite there, the marginal decrease suggests a shift towards more stable precipitation patterns. This change can affect water resource management and agricultural planning in the region.

Regional Climate Implications

Green Bay's climate profile is a microcosm of broader climatic shifts observed across the United States. The city’s warming trend, especially over the last decade, underscores the urgency of national and regional climate initiatives aiming to curb greenhouse gas emissions and promote sustainable practices. The more evenly distributed precipitation could offer benefits for agriculture, reducing the risk of droughts and floods. However, the increasing temperature extremes pose challenges that require adaptive strategies to protect both natural and human systems.