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Climate change poses many costly risks to New Hampshire residents, including an increase in severe storms, extreme winter weather, hotter temperatures, and sea level rise.1 Even if fossil fuel emissions and atmospheric concentrations of greenhouse gasses eventually stabilize through aggressive climate action, the severity of these events will co...
2014 NH Climate Assessment, the rate . at which New Hampshire’s climate changes by mid- to late-century depends fundamentally on how much the concentration of atmospheric greenhouse gases rise, with much lower rates of change projected for the lower concentration pathway.
Temperatures in New Hampshire have risen more than 3°F since the beginning of the 20th century (Figure 1). The number of hot days has varied across the period of record (1950–2020; Figure 2a); however, the most recent period (2015–2020) had the highest multiyear average of about 9 days.
New Hampshire - State Climate Summaries 2022. Key Message 3. Global sea level is projected to rise, with a likely range of 1–4 feet by 2100. Rising sea levels pose significant risks to coastal communities and structures, such as inundation, erosion-induced land loss, and greater flood vulnerability due to higher storm surge. Key Message 1.
The 2017 NOAA Report summarizes how the New Hampshire climate has changed over the past century and how the future climate of the region will be affected by a warmer planet due to human activities.
Earth’s history, detailed analysis of meteorological records shows that the rate of change in New Hampshire has increased significantly over the last four decades, with the state getting warmer and wetter.
New Hampshire’s climate is changing. Most of the state has warmed two to three degrees (F) in the last century. Throughout the northeastern United States, spring is arriving earlier and bringing more precipitation, heavy rainstorms are more frequent, and summers are hotter and drier.
