New Hampshire climate by month
January highs across New Hampshire range from 30°F in North Conway to 34°F in Nashua; July highs from 81°F in Manchester to 83°F in Nashua. The most common best months across these cities are May, June, September.
New Hampshire weather month by month
Average of the 4 New Hampshire cities on this site, computed from NOAA's unrounded values (so it can differ by a degree from averaging the rounded city figures); individual cities differ, sometimes a lot.
| Month | High | Low | Wet days | Snow |
|---|---|---|---|---|
| January | 32°F | 12°F | 11 | 17.9 in |
| February | 35°F | 14°F | 10 | 18.0 in |
| March | 43°F | 23°F | 11 | 14.4 in |
| April | 57°F | 33°F | 12 | 3.1 in |
| May | 68°F | 45°F | 13 | 0.0 in |
| June | 77°F | 55°F | 13 | 0.0 in |
| July | 82°F | 60°F | 12 | 0.0 in |
| August | 81°F | 58°F | 10 | 0.0 in |
| September | 73°F | 50°F | 10 | 0.0 in |
| October | 60°F | 38°F | 11 | 0.6 in |
| November | 48°F | 29°F | 11 | 2.9 in |
| December | 37°F | 19°F | 12 | 14.7 in |
Regional differences
- Warmest winterNashua: January high 34°F
- Coolest summerManchester: July high 81°F
- Most wet daysNorth Conway: 142 a year
- Fewest wet daysConcord: 133 a year
- Most snowNorth Conway: 84.0 in a year
Warmest and coolest New Hampshire city each month
| Month | Warmest | Coolest | Best month for |
|---|---|---|---|
| January | Nashua 34°F | North Conway 30°F | – |
| February | Nashua 37°F | North Conway 33°F | – |
| March | Nashua 45°F | North Conway 42°F | – |
| April | Nashua 58°F | North Conway 55°F | – |
| May | Concord 69°F | Manchester 67°F | 4 cities |
| June | Concord 78°F | Manchester 76°F | 1 city |
| July | Nashua 83°F | Manchester 81°F | – |
| August | Nashua 82°F | Manchester 80°F | – |
| September | Nashua 74°F | North Conway 72°F | 2 cities |
| October | Nashua 61°F | North Conway 59°F | – |
| November | Nashua 49°F | North Conway 46°F | – |
| December | Nashua 39°F | North Conway 36°F | – |
By normal daily high. "Best month for": how many of the 4 cities have it among their best months by our comfort score.
Frost and humidity across New Hampshire
- Earliest typical last frostManchester: Apr 30
- Latest typical last frostConcord: May 8
- Most muggy daysManchester: 21 a year
- Fewest muggy daysNorth Conway: 11 a year
All New Hampshire cities
| City | Jan high | Jul high | Wet days/yr | Snow/yr | Best months |
|---|---|---|---|---|---|
| Concord | 32°F | 83°F | 133 | 67.7 in | May |
| Manchester | 32°F | 81°F | 133 | 67.7 in | May |
| Nashua | 34°F | 83°F | 137 | 66.8 in | May, Sep |
| North Conway | 30°F | 81°F | 142 | 84.0 in | May, Jun, Sep |