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Calcium, NY
Full City Profile · New York · St. Lawrence County County
3.6
/5.0
B+
Good
3,245
Population
578/sq mi density
$64,613
Median Income
$34,360 per capita
$216,900
Home Value
$205,196 Zillow
$1,353
Median Rent
24.5% income on rent
44°F
Avg Temperature
270 sunny days/yr
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.1 / 5.0
$64,613 median income, 2.7% unemployment
A+
Affordability
4.8 / 5.0
$216,900 home value, $1,353/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
C+
Education
3.0 / 5.0
24.6% bachelor's degree or higher
Calcium has a cool climate with an average annual temperature of 44°F (7°C). Winters average 16°F in January while summers reach 68°F in July. The area gets 270 sunny days per year. Annual precipitation totals 39.6 inches. The area receives 92.4 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
16°F Jan (-9°C)
68°F Jul (20°C)
| Annual Average | 43.5°F |
| 19% below US avg | |
| January Average | 16°F (-9°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 518 ft (158 m) |
| Area | 5.6 sq mi (14.5 km²) |
| Population Density | 578/sq mi |
| Coordinates | 44.0409°N, 75.8494°W |
| Timezone | America/New_York |
| County | St. Lawrence County County |
| Nearest Airport | Watertown International (ART) 9 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)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 16°F (-9°C) | 3.3 in | Coldest |
| February | 20°F (-7°C) | 2.5 in | Driest |
| March | 30°F (-1°C) | 2.7 in | |
| April | 43°F (6°C) | 3.1 in | |
| May | 55°F (13°C) | 3.2 in | |
| June | 63°F (17°C) | 3.3 in | |
| July | 68°F (20°C) | 3.1 in | Warmest |
| August | 67°F (20°C) | 3.8 in | |
| September | 59°F (15°C) | 4.4 in | Wettest |
| October | 48°F (9°C) | 3.6 in | |
| November | 37°F (3°C) | 4.3 in | |
| December | 25°F (-4°C) | 3.6 in |
Calcium has a seasonal temperature swing of 53°F / from 16°F in January to 68°F in July. Total annual precipitation is 40.8 inches, with September being the wettest month (4.4") and February the driest (2.5").