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Weather & Climate in Bartlett, NH
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bartlett has a cool climate with an average annual temperature of 45°F (7°C). Winters average 20°F in January while summers reach 70°F in July. The area gets 234 sunny days per year, above the national average. Annual precipitation totals 50.1 inches (wetter than the 38-inch national average). The area receives 84.0 inches of snow annually, making winter weather a significant factor for residents. Air quality is rated Good with a median AQI of 37. The city sits at an elevation of 695 feet.
Temperature
20°F Jan (-7°C)
70°F Jul (21°C)
| Annual Average | 45.4°F |
| 16% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 234 days/yr |
Geography
| Elevation | 695 ft (212 m) |
| Area | 1.5 sq mi (3.9 km²) |
| Population Density | 146/sq mi |
| Coordinates | 44.0738°N, 71.2826°W |
| Timezone | America/New_York |
| County | Coos County County |
| Nearest Airport | Eastern Slopes Regional (FRY) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 72.8 / 100 |
| Social Vulnerability | 59.8 / 100 |
| Community Resilience | 53.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Avalanche | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
43 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Oct 16, 2012 | 5 km W of Hollis Center, Maine | M4.7 | 73 km | 16 km |
| Feb 26, 1999 | 0 km NW of China, Maine | M3.8 | 147 km | 3 km |
| Jun 16, 1995 | 8 km N of Lisbon, New Hampshire | M3.8 | 56 km | 5 km |
| Jan 27, 2025 | 9 km SE of York Harbor, Maine | M3.8 | 126 km | 11 km |
| Aug 21, 1996 | 12 km N of Livermore, New Hampshire | M3.8 | 14 km | 10 km |
| Jan 17, 2000 | 4 km NNE of Dixfield, Maine | M3.6 | 87 km | 16 km |
| Jan 3, 2000 | 4 km W of Leeds, Maine | M3.5 | 93 km | 10 km |
| Oct 6, 1992 | 1 km SW of Canterbury, New Hampshire | M3.4 | 87 km | 5 km |
| Sep 26, 2010 | 2 km SW of Canterbury, New Hampshire | M3.2 | 87 km | 5 km |
| Jan 10, 1999 | 2 km ENE of Merrimac, Massachusetts | M3.1 | 139 km | 2 km |
| Jan 10, 1999 | 1 km NNE of Merrimac, Massachusetts | M3.0 | 139 km | 2 km |
| Nov 20, 1994 | 4 km WNW of Norway, Maine | M3.0 | 57 km | 5 km |
| Jan 27, 2000 | 3 km WNW of Fremont, New Hampshire | M3.0 | 120 km | 1 km |
| Feb 4, 2022 | 0 km SSW of Gorham, New Hampshire | M2.9 | 36 km | 8 km |
| Jun 7, 2010 | 29 km SE of York Beach, Maine | M2.9 | 141 km | 10 km |
| Apr 25, 2023 | 4 km SW of Center Sandwich, New Hampshire | M2.9 | 36 km | 8 km |
| Mar 21, 2016 | 4 km ESE of Warner, New Hampshire | M2.8 | 98 km | 7 km |
| Feb 12, 1995 | 1 km NNE of Turner, Maine | M2.8 | 85 km | 5 km |
| Jul 28, 2024 | 6 km W of Gardiner, Maine | M2.8 | 115 km | 8 km |
| Sep 28, 2002 | 2 km N of Wilton, New Hampshire | M2.8 | 139 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 1991 | Bob | Category 2 | 98 mph | 176 km |
| 1985 | Gloria | Category 1 | 86 mph | 271 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
96 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 21 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 25, 1969 | EF3 | 40 km | 5.7 mi | 0 |
| Jul 6, 1999 | EF2 | 86 km | 7.5 mi | 0 |
| Jun 22, 1981 | EF2 | 72 km | 8.7 mi | 0 |
| May 11, 1973 | EF2 | 78 km | 0.5 mi | 0 |
| Jul 3, 1972 | EF2 | 74 km | 1.0 mi | 0 |
| Jul 31, 1971 | EF2 | 95 km | 0.5 mi | 0 |
| Jul 31, 1971 | EF2 | 95 km | 1.9 mi | 0 |
| Oct 10, 1966 | EF2 | 82 km | 0.2 mi | 0 |
| Aug 11, 1966 | EF2 | 66 km | 9.0 mi | 0 |
| Jul 18, 1963 | EF2 | 53 km | 0.1 mi | 0 |
| May 14, 1963 | EF2 | 89 km | 8.7 mi | 0 |
| Jul 16, 2024 | EF1 | 75 km | 1.8 mi | 0 |
| Jul 1, 2017 | EF1 | 39 km | 0.3 mi | 0 |
| Jul 1, 2017 | EF1 | 37 km | 1.5 mi | 0 |
| Jul 1, 2017 | EF1 | 45 km | 2.5 mi | 0 |
| Jul 28, 2014 | EF1 | 67 km | 1.7 mi | 0 |
| Aug 21, 2011 | EF1 | 78 km | 2.7 mi | 0 |
| Jun 1, 2011 | EF1 | 60 km | 0.3 mi | 0 |
| Jul 21, 2010 | EF1 | 74 km | 5.4 mi | 0 |
| Jul 21, 2010 | EF1 | 59 km | 2.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.6 m (12 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2008 | MAINE | Avalanche | 3.6 m | — | 130 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 3.5 in | |
| February | 19°F (-7°C) | 3.5 in | Coldest, Driest |
| March | 29°F (-2°C) | 3.8 in | |
| April | 40°F (4°C) | 4.1 in | |
| May | 52°F (11°C) | 4.3 in | |
| June | 61°F (16°C) | 4.3 in | |
| July | 70°F (21°C) | 4.1 in | Warmest |
| August | 64°F (18°C) | 4.6 in | |
| September | 55°F (13°C) | 3.8 in | |
| October | 45°F (7°C) | 4.1 in | |
| November | 34°F (1°C) | 4.9 in | Wettest |
| December | 23°F (-5°C) | 4.5 in |
Bartlett has a seasonal temperature swing of 51°F / from 19°F in February to 70°F in July. Total annual precipitation is 49.5 inches, with November being the wettest month (4.9") and February the driest (3.5").