Londonderry, New Hampshire Climate
United States
Pop. 11,037 Elev. 128 m / 420 ft
TZ: America/New_York (UTC-4) ·
Summers in Londonderry are warm, with July highs around 86°F (30°C), while winters are frigid with January lows of 19°F (-7°C). Humidity pushes the summer feels-like temperature to 93°F (34°C), while wind chill can drive winter lows to 10°F (-12°C). Expect around 56 rainy days annually (35.8 in / 908 mm total), with snow on 11 days and 53 in (1341 mm) of annual accumulation. The city averages 137 sunny days per year and around 21 thunderstorm days. Ocean water temperatures reach 68°F (20°C) in summer.
| Temperature | 86°F (30°C) high | 19°F (-7°C) low |
| Feels like | 93°F (34°C) high | 10°F (-12°C) low |
| Rain | 56 days | 35.8 in (908 mm) /yr |
| Snow | 11 days | 52.8 in (1341 mm) /yr |
| Sky | 137 sunny | 21 stormy |
| Wind | 3.2 mph (1.4 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, Jun, Jul, Aug, Sep
Sky & Air by Month
Cloud cover (%)
42
Jan 57
Feb 62
Mar 66
Apr 77
May 60
Jun 54
Jul 45
Aug 54
Sep 45
Oct 50
Nov 53
Dec Humidity (%)
56
Jan 64
Feb 57
Mar 55
Apr 70
May 67
Jun 65
Jul 62
Aug 73
Sep 68
Oct 65
Nov 62
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 6 mi Manchester-Boston Regional Airport (MHT)
Ski resort 10 mi McIntyre Ski Area
National park 69 mi Connecticut River Greenway State Park
Mountain peak
(5,089 ft) 90 mi Mount Lincoln
Hospital 3 mi Parkland Medical Center
Hiking trail 11 mi Wolven Park Red Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 34°F 1°C | 19°F -7°C | 0.9 in 24 mm | 6.9 in175 mm | 16 |
| February | 35°F 2°C | 19°F -7°C | 1.1 in 29 mm | 24.1 in612 mm | 8 |
| March | 52°F 11°C | 32°F 0°C | 3.7 in 95 mm | 0.3 in8 mm | 9 |
| April | 61°F 16°C | 42°F 6°C | 3.9 in 98 mm | 5.7 in144 mm | 8 |
| May | 67°F 20°C | 51°F 11°C | 8.1 in 205 mm | — | 4 |
| June | 79°F 26°C | 61°F 16°C | 1.9 in 49 mm | — | 11 |
| July | 86°F 30°C | 67°F 19°C | 2.8 in 71 mm | — | 11 |
| August | 81°F 27°C | 60°F 15°C | 1.8 in 45 mm | — | 17 |
| September | 75°F 24°C | 55°F 13°C | 2.6 in 66 mm | — | 10 |
| October | 63°F 17°C | 45°F 7°C | 4.3 in 109 mm | — | 19 |
| November | 49°F 9°C | 34°F 1°C | 2.8 in 72 mm | 0.1 in3 mm | 12 |
| December | 36°F 2°C | 21°F -6°C | 1.8 in 45 mm | 15.7 in400 mm | 12 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 16 | 0 |
| February | 8 | 1 |
| March | 9 | 1 |
| April | 8 | 2 |
| May | 4 | 6 |
| June | 11 | 0 |
| July | 11 | 3 |
| August | 17 | 2 |
| September | 10 | 2 |
| October | 19 | 2 |
| November | 12 | 1 |
| December | 12 | 1 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 44°F 6°C | 32°F 0°C |
| February | 39°F 4°C | 32°F 0°C |
| March | 40°F 5°C | 38°F 3°C |
| April | 46°F 8°C | 47°F 8°C |
| May | 53°F 12°C | 57°F 14°C |
| June | 64°F 18°C | 67°F 20°C |
| July | 68°F 20°C | 74°F 23°C |
| August | 68°F 20°C | 70°F 21°C |
| September | 65°F 18°C | 65°F 18°C |
| October | 63°F 17°C | 54°F 12°C |
| November | 54°F 12°C | 40°F 5°C |
| December | 48°F 9°C | 32°F 0°C |