Average Temperatures for New Hampshire in May
Average temperatures for May at cities, communities and other locations around around New Hampshire are listed below in degrees Fahrenheit and Celsius.
You can jump to a separate table for Southern and Northern New Hampshire.
The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.
Southern New Hampshire
| High °F | Low °F | Place | High °C | Low °C |
|---|---|---|---|---|
| 69 | 44 | Concord | 21 | 7 |
| 68 | 44 | Durham | 20 | 7 |
| 68 | 43 | Franklin Falls Reservoir Dam | 20 | 6 |
| 69 | 41 | Keene | 20 | 5 |
| 68 | 45 | Laconia & Lakeport | 20 | 7 |
| 70 | 44 | Lebanon | 21 | 7 |
| 67 | 46 | Massabesic Lake | 20 | 8 |
| 66 | 44 | Mount Sunapee | 19 | 7 |
| 70 | 46 | Nashua | 21 | 8 |
| 66 | 45 | Portsmouth & Greenland | 19 | 7 |
| 67 | 45 | Rochester | 20 | 7 |
Northern New Hampshire
| High °F | Low °F | Place | High °C | Low °C |
|---|---|---|---|---|
| 66 | 41 | Berlin | 19 | 5 |
| 67 | 39 | Bethlehem | 20 | 4 |
| 64 | 37 | Colebrook | 18 | 3 |
| 62 | 38 | First Connecticut Lake | 16 | 4 |
| 43 | 30 | Mount Washington | 6 | -1 |
| 68 | 43 | North Conway | 20 | 6 |
| 62 | 39 | Pinkham Notch | 17 | 4 |
| 67 | 39 | Plymouth | 19 | 4 |
| 66 | 40 | Tamworth | 19 | 5 |
Reference
NOAA National Centers for Environmental Information (NCEI). Climate Normals.