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Grenville, NM
Full City Profile · New Mexico · Union County County
3.9
/5.0
B+
Good
40
Population
105/sq mi density
$114,167
Median Income
$44,865 per capita
$107,500
Home Value
$112,600 Zillow
52°F
Avg Temperature
330 sunny days/yr
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$114,167 median income, 5.0% unemployment
A+
Affordability
5.0 / 5.0
$107,500 home value, /mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
B+
Education
3.5 / 5.0
31.4% bachelor's degree or higher
Grenville experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 34°F in January while summers reach 72°F in July. The area gets 330 sunny days per year. Annual precipitation totals 16.6 inches. The area receives 17.9 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
34°F Jan (1°C)
72°F Jul (22°C)
| Annual Average | 51.9°F |
| 4% below US avg | |
| January Average | 34°F (1°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 5,971 ft (1,820 m) |
| Area | 0.6 sq mi (1.6 km²) |
| Population Density | 105/sq mi |
| Coordinates | 36.5905°N, 103.6146°W |
| Timezone | America/Denver |
| County | Union County County |
| Nearest Airport | Southeast Colorado Regional (LAA) 114 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 12.1 / 100 |
| Social Vulnerability | 83.7 / 100 |
| Community Resilience | 10.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively High |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Volcano | No Rating |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 0.2 in | Driest |
| February | 35°F (2°C) | 0.4 in | |
| March | 41°F (5°C) | 0.7 in | |
| April | 49°F (9°C) | 1.0 in | |
| May | 58°F (14°C) | 2.3 in | |
| June | 67°F (19°C) | 2.3 in | |
| July | 72°F (22°C) | 3.1 in | Warmest, Wettest |
| August | 70°F (21°C) | 2.6 in | |
| September | 63°F (17°C) | 1.9 in | |
| October | 53°F (11°C) | 0.8 in | |
| November | 41°F (5°C) | 0.5 in | |
| December | 33°F (1°C) | 0.3 in | Coldest |
Grenville has a seasonal temperature swing of 39°F / from 33°F in December to 72°F in July. Total annual precipitation is 16.1 inches, with July being the wettest month (3.1") and January the driest (0.2").