Top Climate Change Risks: Precipitation, Heat, Flood
Use this page to learn how climate change is affecting people in New Hampshire.
Then, use our tool to check your address for local and property-specific heat, precipitation, drought, fire, and flood risk.
People in New Hampshire will experience especially increased risks from precipitation, heat, and flood due to climate change over the next 30 years. These risks, through 2050 and beyond, may change depending on how much we reduce emissions in the near future.
ClimateCheck Risk Ratings measure the risk posed by a hazard on a 1-100 scale, using historical conditions and projected scenarios through 2050. Climate change has complex, interacting local and large-scale effects that impact everyone on Earth, and a low risk rating does not mean no exposure to impacts from that hazard. See how we measure risk.
Of these top cities in New Hampshire, the city with the highest overall risk is Manchester. The city with the lowest overall risk is Lebanon.
Among the lower 48 states, New Hampshire's highest ranking is #8 for flood risk.
Arizona and West Virginia rank highest for flood risk Utah and Nevada rank lowest for flood risk
New Hampshire ranks #34 for fire risk.
Highest fire risk: Oklahoma and Wyoming
Lowest fire risk: Maine and Vermont
See our fire ranking methodology.
New Hampshire ranks #26 for drought risk.
Highest drought risk: Nevada and California
Lowest drought risk: Mississippi and Vermont
New Hampshire ranks #40 for heat risk.
Highest heat risk: Louisiana and Mississippi
Lowest heat risk: California and Oregon
New Hampshire ranks #20 for storm risk.
Highest storm risk: Rhode Island and New York
Lowest storm risk: Nevada and Arizona
To measure precipitation risk, we look at the amount of precipitation that falls in 48-hour periods exceeding a location-specific threshold, and how many times this happens per year. A precipitation threshold is based on the top 1% of rainiest days per year for a location.
Historically, Rochester experienced an average of 1.6 inches of rain about 11 times per year. In 2050, it is projected to experience an average of 1.5 inches of rain about 13 times per year.
Historically, Keene experienced an average of 1.3 inches of rain about 12 times per year. In 2050, it is projected to experience an average of 1.2 inches of rain about 15 times per year.
An extremely hot day in New Hampshire is about 89ºF. This is based on historical maximum temperatures on the top 2% of days in an average year.
The frequency of very hot days is increasing. On average, someone in New Hampshire will experience about 37 extremely hot days in 2050.
Coastal flood hazards include storm surge, when strong winds push water to shore, and rising sea levels due to climate change. The rate of sea level rise varies along the coast. Rising seas contribute to greater instances and spread of high-tide flooding, when high tides inundate land, and greater potential storm surge depths.
Drought risk is based on water stress, which is a projection of how much of the water supply will be taken up by human demand.
In the figure, the blue bars represent the available water every 10 years from 2020-2060, and the orange bars represent demand. The drought risk rating is based on the ratio of supply to demand and the projected change in this ratio. Lower supply and higher demand correspond to a higher score.
Mitigating climate change—by eliminating our emissions into the atmosphere and reducing our strain on the environment—and adapting to our changing planet are both vital to our well-being.
Check your address and get a free report describing risks to your property and in your area.
Your level of risk depends on your city's capacity to adapt. Look up information on your city's characteristics and how they relate to preparedness for climate change: ND-GAIN Urban Adaptation Assessment.
Check our free report for tips on protecting your home from hazards.
Green infrastructure is a category of nature-based solutions to increasing precipitation. Find resources for individuals and municipalities through the EPA's Soak Up the Rain initiative.
Planting trees and vegetation helps reduce extreme heat in urban environments. Cool Pavements can also help urban heat islands. Search the Heat Island Community Actions Database to see what some municipalities have been doing to reduce extreme heat risk.
Read more about building resilience for communities: U.S. Climate Resilience Toolkit.
Use the Common Cause tool to find your representatives—federal to local—how to contact them, and information about political contributions and bills they have introduced.
Change is necessary–and possible–across the globe and in every part of our society. Learn more with Project Drawdown's introduction to climate solutions.
Estimate your home's carbon footprint with the CoolClimate Calculator. Or, estimate the carbon footprint of your business.