San Acacio, CO
Full City Profile · Colorado · Costilla County County
5.0
/5.0
A+
Excellent
23
Population
18/sq mi density
44°F
Avg Temperature
A+
Overall
5.0 / 5.0
Strong
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 22°F in January while summers reach 65°F in July. Annual precipitation totals 9.0 inches. The area receives 27.9 inches of snow annually.
Temperature
22°F Jan (-6°C)
65°F Jul (18°C)
| Annual Average | 43.9°F |
| 19% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 65°F (18°C) |
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
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 | 22°F (-6°C) | 0.4 in | Coldest |
| February | 27°F (-3°C) | 0.5 in | |
| March | 37°F (3°C) | 0.4 in | Driest |
| April | 43°F (6°C) | 0.6 in | |
| May | 51°F (11°C) | 0.7 in | |
| June | 60°F (16°C) | 0.8 in | |
| July | 65°F (18°C) | 1.5 in | Warmest, Wettest |
| August | 63°F (17°C) | 1.3 in | |
| September | 57°F (14°C) | 1.0 in | |
| October | 46°F (8°C) | 0.9 in | |
| November | 33°F (1°C) | 0.5 in | |
| December | 24°F (-5°C) | 0.4 in |
San Acacio has a seasonal temperature swing of 43°F / from 22°F in January to 65°F in July. Total annual precipitation is 9.0 inches, with July being the wettest month (1.5") and March the driest (0.4").