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Loudon, NH
Full City Profile · New Hampshire · Merrimack County County
3.6
/5.0
B+
Good
648
Population
358/sq mi density
$100,791
Median Income
$60,749 per capita
$402,200
Home Value
$492,638 Zillow
47°F
Avg Temperature
246 sunny days/yr
71
Violent Crime/100K
760 property/100K
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$100,791 median income, 0.0% unemployment
A
Affordability
4.4 / 5.0
$402,200 home value, /mo rent
F
Safety
1.0 / 5.0
71 violent crimes/100K
B+
Education
3.8 / 5.0
35.3% bachelor's degree or higher
Loudon experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 24°F in January while summers reach 71°F in July. The area gets 246 sunny days per year. Annual precipitation totals 46.3 inches. The area receives 56.6 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
24°F Jan (-5°C)
71°F Jul (22°C)
| Annual Average | 47.4°F |
| 12% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 387 ft (118 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 358/sq mi |
| Coordinates | 43.2818°N, 71.4651°W |
| Timezone | America/New_York |
| County | Merrimack County County |
| Nearest Airport | Manchester Boston Regional (MHT) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0420 ppm |
| SO₂ (Sulfur Dioxide) | 0.53 ppb |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 78.2 / 100 |
| Social Vulnerability | 15.0 / 100 |
| Community Resilience | 80.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 3.0 in | |
| February | 23°F (-5°C) | 2.7 in | Coldest, Driest |
| March | 32°F (0°C) | 3.1 in | |
| April | 44°F (6°C) | 3.4 in | |
| May | 55°F (13°C) | 3.5 in | |
| June | 64°F (18°C) | 3.3 in | |
| July | 71°F (22°C) | 3.5 in | Warmest |
| August | 67°F (20°C) | 3.5 in | |
| September | 59°F (15°C) | 3.2 in | |
| October | 48°F (9°C) | 3.6 in | |
| November | 38°F (3°C) | 4.0 in | Wettest |
| December | 26°F (-3°C) | 3.4 in |
Loudon has a seasonal temperature swing of 48°F / from 23°F in February to 71°F in July. Total annual precipitation is 40.1 inches, with November being the wettest month (4.0") and February the driest (2.7").