Key facts: Manchester
- The record low is −29°F, and around 40 inches of precipitation falls in an average year.[1]
- The Great Flood of 1936 destroyed the McGregor Bridge, and in May 2006 the Merrimack rose about 10 feet over flood stage.[1][2]
- The Amoskeag mills once made Manchester the home of the largest cotton textile plant in the world.[3]
A leak that crosses property lines
When water moves from one home to another, responsibilities overlap. An association master policy may apply to the building and your own to your interior. Tell everyone early, and photograph your own space even if the leak began elsewhere.
A closer look in Manchester
Cold and the river
Flood claims recorded in Hillsborough County
Manchester sits in Hillsborough County. FEMA publishes every National Flood Insurance Program claim with personal details removed, which gives a plain record of where water has reached insured buildings here.
| Measure | Count |
|---|---|
| Flood insurance claims on record | 629 |
| Year with the most claims | 2006 (165) |
| Largest named event | Flooding (76) |
| Claims outside high-risk A and V zones | 46% |
| Claims on buildings built before 1975 | 71% |
County-wide counts of insured claims only. Uninsured losses, burst pipes and appliance leaks are not in this data.
What the Manchester claim record shows
For Manchester homes, the local precedents are the events behind the most Hillsborough County claims: Flooding (76 claims), March 2010 Nor'Easter (20 claims) and December Nor'Easter (7 claims).
About 46% of claims with a recorded zone came from outside the high-risk A and V zones, so a moderate-risk label does not mean a Manchester home stays dry.
If your Manchester home is older, note that buildings from before 1975 make up 71% of county claims with a known build date. Many predate current flood maps, so inspect low outlets, ductwork and subfloors closely after any water event.
Federal disaster history for Hillsborough County
FEMA lists 31 federal declarations covering Hillsborough County. The most common types are severe storm (13), snowstorm (6) and flood (5). The latest are Covid-19 Pandemic in 2020, Covid-19 in 2020 and Severe Winter Storm and Snowstorm in 2013. When a declaration is open, federal aid may be available to Manchester residents, so ask about it alongside your insurance claim.
Manchester weather and your home
Weather records for Manchester from 2015 through 2024 average 45 inches of precipitation a year, and December and October are the wettest months. The area averages 8.2 days a year with an inch or more.
Manchester falls to 20°F or below on about 51 nights a year, which puts pipes in exterior walls, crawl spaces and garages at risk.
When rain falls in Manchester
Seasonal averages for Manchester, 2015 through 2024. Plan roof, gutter and sump pump checks before the wettest stretch.
| Season | Average | Share of year |
|---|---|---|
| January to March | 10.4 in | 23% |
| April to June | 10.3 in | 23% |
| July to September | 11.8 in | 26% |
| October to December | 12.1 in | 27% |
Modeled from Open-Meteo historical weather data. Precipitation includes rain and melted snow.
Manchester home checklist from these records
- Don't rely on recent quiet years. Only 6% of Hillsborough County claims date from 2015 or later, so older floods still show what can happen.
- Insulate exposed pipes before 51-plus hard-freeze nights arrive, and know your main shutoff.
- Check roof flashing and drains before December, the wettest month in Manchester.
- Keep dated photos of each room. After Flooding, 76 insured Hillsborough County owners filed claims at about the same time.
What to tell the Manchester contractor
- Whether you are in a condo
- Which unit the leak started in
- Whether it froze
Services Manchester callers ask about
Questions
Manchester water damage questions
Who pays for a mill condo leak?
It depends on the association bylaws and policies. Report to the association and your insurer right away.
Does lead matter in a Manchester tenement?
Assume lead paint may be present in pre-1978 buildings until tested.[4]