Sandown, New Hampshire Climate
United States
Pop. 5,827 Elev. 76 m / 249 ft
TZ: America/New_York (UTC-4) ·
Summers in Sandown are warm, with July highs around 86°F (30°C), while winters are frigid with February lows of 17°F (-8°C). Humidity pushes the summer feels-like temperature to 93°F (34°C), while wind chill can drive winter lows to 9°F (-13°C). Expect around 57 rainy days annually (36.1 in / 916 mm total), with snow on 11 days and 59 in (1488 mm) of annual accumulation. The city averages 131 sunny days per year and around 22 thunderstorm days. Ocean water temperatures reach 68°F (20°C) in summer.
| Temperature | 86°F (30°C) high | 17°F (-8°C) low |
| Feels like | 93°F (34°C) high | 9°F (-13°C) low |
| Rain | 57 days | 36.1 in (916 mm) /yr |
| Snow | 11 days | 58.6 in (1488 mm) /yr |
| Sky | 131 sunny | 22 stormy |
| Wind | 3.2 mph (1.4 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jun, Jul, Aug, Sep
Sky & Air by Month
Cloud cover (%)
44
Jan 56
Feb 63
Mar 66
Apr 77
May 59
Jun 54
Jul 45
Aug 52
Sep 45
Oct 52
Nov 54
Dec Humidity (%)
57
Jan 65
Feb 59
Mar 55
Apr 71
May 66
Jun 63
Jul 61
Aug 71
Sep 69
Oct 67
Nov 65
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 13 mi Manchester-Boston Regional Airport (MHT)
Ski resort 14 mi Ski Bradford
National park 80 mi Connecticut River Greenway State Park
Mountain peak
(5,089 ft) 87 mi Mount Lincoln
Hospital 4 mi Hampstead Hospital
Hiking trail 11 mi Big Island Trail Loop
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 32°F 0°C | 18°F -8°C | 0.8 in 20 mm | 7.2 in182 mm | 15 |
| February | 33°F 1°C | 17°F -8°C | 1.0 in 26 mm | 25.6 in649 mm | 8 |
| March | 51°F 10°C | 31°F -1°C | 3.5 in 89 mm | 2.1 in52 mm | 9 |
| April | 60°F 16°C | 41°F 5°C | 4.0 in 102 mm | 6.0 in152 mm | 8 |
| May | 66°F 19°C | 50°F 10°C | 8.9 in 225 mm | — | 4 |
| June | 79°F 26°C | 60°F 16°C | 1.9 in 49 mm | — | 11 |
| July | 86°F 30°C | 66°F 19°C | 2.8 in 71 mm | — | 11 |
| August | 81°F 27°C | 59°F 15°C | 1.8 in 45 mm | — | 16 |
| September | 75°F 24°C | 54°F 12°C | 2.6 in 65 mm | — | 9 |
| October | 63°F 17°C | 44°F 7°C | 4.1 in 104 mm | — | 18 |
| November | 47°F 8°C | 33°F 1°C | 3.0 in 76 mm | 0.3 in6 mm | 11 |
| December | 34°F 1°C | 18°F -8°C | 1.7 in 44 mm | 17.6 in446 mm | 11 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 0 |
| February | 8 | 0 |
| March | 9 | 1 |
| April | 8 | 2 |
| May | 4 | 8 |
| June | 11 | 0 |
| July | 11 | 1 |
| August | 16 | 2 |
| September | 9 | 2 |
| October | 18 | 3 |
| November | 11 | 2 |
| December | 11 | 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 | 34°F 1°C |
| April | 46°F 8°C | 43°F 6°C |
| May | 53°F 12°C | 55°F 13°C |
| June | 64°F 18°C | 65°F 18°C |
| July | 68°F 20°C | 73°F 23°C |
| August | 68°F 20°C | 70°F 21°C |
| September | 65°F 18°C | 64°F 18°C |
| October | 63°F 17°C | 55°F 13°C |
| November | 54°F 12°C | 41°F 5°C |
| December | 48°F 9°C | 32°F 0°C |