Average Precipitation for New Hampshire in September
The tables below give monthly averages for rainfall plus snowfall during September at cities, communities and other locations in New Hampshire.
Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.
The precipitation totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.
You can jump to a separate table for Southern and Northern New Hampshire.
Southern New Hampshire
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 9 | Concord | 3.6 | 92 |
| 10 | Durham | 4.0 | 102 |
| 10 | Keene | 4.3 | 108 |
| 10 | Laconia & Lakeport | 3.8 | 96 |
| 13 | Lebanon | 3.4 | 87 |
| 9 | Massabesic Lake | 3.9 | 98 |
| 10 | Mount Sunapee | 4.2 | 106 |
| 9 | Nashua | 4.1 | 103 |
| 9 | Portsmouth & Greenland | 4.1 | 104 |
| 11 | Rochester | 3.4 | 87 |
Northern New Hampshire
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 9 | Berlin | 3.4 | 85 |
| 11 | Bethlehem | 3.6 | 91 |
| 11 | Colebrook | 3.4 | 86 |
| 12 | First Connecticut Lake | 4.0 | 102 |
| 14 | Mount Washington | 7.7 | 195 |
| 11 | North Conway | 3.7 | 93 |
| 12 | Pinkham Notch | 5.0 | 127 |
| 12 | Plymouth | 3.6 | 90 |
| 10 | Tamworth | 4.3 | 110 |
Reference
NOAA National Centers for Environmental Information (NCEI). Climate Normals.