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San Acacio, CO
Full City Profile · Colorado · Costilla County County
3.0
/5.0
B
Good
23
Population
18/sq mi density
44°F
Avg Temperature
330 sunny days/yr
183
Violent Crime/100K
3,296 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
183 violent crimes/100K
A+
Education
5.0 / 5.0
69.6% bachelor's degree or higher
San Acacio has a cool climate with an average annual temperature of 44°F (7°C). Winters average 20°F in January while summers reach 66°F in July. The area gets 330 sunny days per year. Annual precipitation totals 9.8 inches. Air quality is rated Good with a median AQI of 41.
Temperature
20°F Jan (-7°C)
66°F Jul (19°C)
| Annual Average | 43.5°F |
| 19% below US avg | |
| January Average | 20°F (-7°C) |
| July Average | 66°F (19°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 7,721 ft (2,353 m) |
| Area | 1.3 sq mi (3.3 km²) |
| Population Density | 18/sq mi |
| Coordinates | 37.2086°N, 105.5666°W |
| Timezone | America/Denver |
| County | Costilla County County |
| Nearest Airport | San Luis Valley Regional/Bergman Field (ALS) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 6.6 / 100 |
| Social Vulnerability | 96.5 / 100 |
| Community Resilience | 0.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Volcano | No Rating |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-7°C) | 0.3 in | Coldest, Driest |
| February | 26°F (-3°C) | 0.4 in | |
| March | 34°F (1°C) | 0.6 in | |
| April | 42°F (5°C) | 0.6 in | |
| May | 51°F (11°C) | 1.0 in | |
| June | 61°F (16°C) | 0.9 in | |
| July | 66°F (19°C) | 1.7 in | Warmest |
| August | 64°F (18°C) | 2.0 in | Wettest |
| September | 57°F (14°C) | 1.2 in | |
| October | 46°F (8°C) | 0.9 in | |
| November | 32°F (0°C) | 0.7 in | |
| December | 21°F (-6°C) | 0.4 in |
San Acacio has a seasonal temperature swing of 45°F / from 20°F in January to 66°F in July. Total annual precipitation is 10.4 inches, with August being the wettest month (2.0") and January the driest (0.3").