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DeKalb Junction, NY
Full City Profile · New York · St. Lawrence County County
1.4
/5.0
F
Poor
512
Population
129/sq mi density
$74,200
Home Value
$115,637 Zillow
45°F
Avg Temperature
270 sunny days/yr
191
Violent Crime/100K
3,949 property/100K
F
Overall
1.4 / 5.0
Below average overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
191 violent crimes/100K
D
Education
1.8 / 5.0
10.4% bachelor's degree or higher
DeKalb Junction has a cool climate with an average annual temperature of 45°F (7°C). Winters average 17°F in January while summers reach 69°F in July. The area gets 270 sunny days per year. Annual precipitation totals 38.2 inches. The area receives 77.3 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
17°F Jan (-8°C)
69°F Jul (21°C)
| Annual Average | 44.6°F |
| 17% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 441 ft (134 m) |
| Area | 1.5 sq mi (3.9 km²) |
| Population Density | 129/sq mi |
| Coordinates | 44.5121°N, 75.2977°W |
| Timezone | America/New_York |
| County | St. Lawrence County County |
| Nearest Airport | Ogdensburg International (OGS) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 77.9 / 100 |
| Social Vulnerability | 64.7 / 100 |
| Community Resilience | 70.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | No Rating |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 15.0 m (49 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1908 | NOTRE DAME DE LA SALETTE | Meteorological | 15.0 m | 33 | 142 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-8°C) | 2.4 in | Coldest |
| February | 18°F (-8°C) | 2.0 in | Driest |
| March | 29°F (-2°C) | 2.3 in | |
| April | 43°F (6°C) | 2.9 in | |
| May | 55°F (13°C) | 3.0 in | |
| June | 64°F (18°C) | 3.2 in | |
| July | 69°F (21°C) | 3.4 in | Warmest |
| August | 67°F (19°C) | 3.9 in | |
| September | 58°F (15°C) | 4.1 in | Wettest |
| October | 47°F (8°C) | 3.2 in | |
| November | 36°F (2°C) | 3.4 in | |
| December | 22°F (-5°C) | 2.8 in |
DeKalb Junction has a seasonal temperature swing of 53°F / from 17°F in January to 69°F in July. Total annual precipitation is 36.5 inches, with September being the wettest month (4.1") and February the driest (2.0").