Key facts: Nashua
- The May 2006 flood and later storms are why it is worth a look.
- The Tree Streets and French Hill are full of homes tied to the mills that began about 1823.[1]
- Lows fall below 0°F on about 8.7 days a year, so pipes along those cold walls are a yearly risk.
Check your address, not the neighbors' memories
Plenty of low ground sits near water while other parts rise well above it. Use the official flood map for your own address rather than what people recall.[1] The May 2006 flood and later storms are why it is worth a look.
A closer look in Nashua
Old mill neighborhoods
The Tree Streets and French Hill are full of homes tied to the mills that began about 1823.[1] Expect stone or brick foundations, old plumbing and multi-family layouts. Lows fall below 0°F on about 8.7 days a year, so pipes along those cold walls are a yearly risk.
Flood claims recorded in Hillsborough County
Nashua 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 Nashua claim record shows
For Nashua 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 Nashua home stays dry.
If your Nashua 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 Nashua residents, so ask about it alongside your insurance claim.
Nashua weather and your home
Weather records for Nashua from 2015 through 2024 average 45 inches of precipitation a year, and October and December are the wettest months. The area averages 8.7 days a year with an inch or more.
Nashua falls to 20°F or below on about 45 nights a year, which puts pipes in exterior walls, crawl spaces and garages at risk.
When rain falls in Nashua
Seasonal averages for Nashua, 2015 through 2024. Plan roof, gutter and sump pump checks before the wettest stretch.
| Season | Average | Share of year |
|---|---|---|
| January to March | 10.8 in | 24% |
| April to June | 10.3 in | 23% |
| July to September | 12.0 in | 26% |
| October to December | 12.3 in | 27% |
Modeled from Open-Meteo historical weather data. Precipitation includes rain and melted snow.
Nashua 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 45-plus hard-freeze nights arrive, and know your main shutoff.
- Check roof flashing and drains before October, the wettest month in Nashua.
- Keep dated photos of each room. After Flooding, 76 insured Hillsborough County owners filed claims at about the same time.
What to tell the Nashua contractor
- Your neighborhood
- Whether it is a stone foundation
- Whether a brook is near
Services Nashua callers ask about
Questions
Nashua water damage questions
How much snow does Nashua get?
About 52.9 inches a season on average, which sets up melt and ice dam leaks.[1]
Do you cover Hudson?
Hudson is in the coverage list we hold for New Hampshire.