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Weather & Climate in Fort Sumner, NM
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Fort Sumner enjoys a temperate climate with an average annual temperature of 59°F (15°C). Winters average 40°F in January while summers reach 79°F in July. The area gets 330 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 15.1 inches (drier than the 38-inch national average). The area receives 9.1 inches of snow annually. Air quality is rated Good with a median AQI of 37. The city sits at an elevation of 4,137 feet.
Temperature
40°F Jan (4°C)
79°F Jul (26°C)
| Annual Average | 59.2°F |
| 10% above US avg | |
| January Average | 40°F (4°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 4,137 ft (1,261 m) |
| Area | 3.4 sq mi (8.7 km²) |
| Population Density | 289/sq mi |
| Coordinates | 34.4869°N, 104.2177°W |
| Timezone | America/Denver |
| County | De Baca County County |
| Nearest Airport | Clovis Regional (CVN) 65 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 4.1 / 100 |
| Social Vulnerability | 62.8 / 100 |
| Community Resilience | 14.5 / 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 | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Volcano | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
11 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.4.
| Jul 22, 1996 | 11 km WSW of Corona, New Mexico | M3.4 | 141 km | 10 km |
| Mar 24, 1996 | 8 km WNW of Corona, New Mexico | M3.3 | 137 km | 10 km |
| Mar 19, 1995 | 8 km SSE of Newkirk, New Mexico | M3.3 | 57 km | 5 km |
| Jan 6, 2014 | 31 km E of Logan, New Mexico | M3.3 | 139 km | 5 km |
| Apr 1, 2025 | 22 km S of Newkirk, New Mexico | M3.0 | 42 km | 5 km |
| Jul 14, 1998 | 6 km WSW of Logan, New Mexico | M3.0 | 117 km | 5 km |
| Mar 24, 1996 | 7 km W of Corona, New Mexico | M2.8 | 137 km | 10 km |
| Aug 18, 2017 | 13 km SW of Newkirk, New Mexico | M2.8 | 56 km | 5 km |
| May 20, 1997 | New Mexico | M2.7 | 144 km | 10 km |
| Jun 29, 2020 | 5 km SSW of Newkirk, New Mexico | M2.7 | 60 km | 5 km |
| Mar 24, 1993 | New Mexico | M2.7 | 101 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
124 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 3 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 23, 2007 | EF2 | 100 km | 12.5 mi | 2 |
| Jun 4, 1978 | EF2 | 80 km | 2.0 mi | 0 |
| May 7, 1972 | EF2 | 85 km | 0.1 mi | 0 |
| Apr 17, 1970 | EF2 | 38 km | 39.8 mi | 0 |
| Jul 12, 1963 | EF2 | 95 km | 0.1 mi | 0 |
| May 24, 1957 | EF2 | 62 km | 36.5 mi | 0 |
| Dec 27, 2019 | EF1 | 81 km | 4.8 mi | 0 |
| Jun 12, 2012 | EF1 | 69 km | 1.1 mi | 0 |
| Sep 2, 1993 | EF1 | 24 km | 0.5 mi | 0 |
| Jun 27, 1992 | EF1 | 94 km | 2.0 mi | 0 |
| Apr 14, 1992 | EF1 | 51 km | 18.0 mi | 0 |
| Jun 1, 1989 | EF1 | 85 km | 5.0 mi | 0 |
| Jun 1, 1989 | EF1 | 40 km | 8.0 mi | 0 |
| Jun 1, 1989 | EF1 | 52 km | 5.0 mi | 0 |
| May 15, 1989 | EF1 | 44 km | 10.0 mi | 0 |
| Jun 22, 1981 | EF1 | 88 km | 0.1 mi | 0 |
| Jun 3, 1974 | EF1 | 98 km | 0.1 mi | 0 |
| Jul 3, 1972 | EF1 | 30 km | 0.1 mi | 0 |
| Jun 11, 1971 | EF1 | 95 km | 0.1 mi | 0 |
| Jun 11, 1971 | EF1 | 91 km | 0.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Nearby Volcanoes
1 volcano within 200 km. Closest: Carrizozo (176 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Carrizozo | Pyroclastic cone(s) | 1,731 m (5,679 ft) | -3250 | 176 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: TIRE (44,942 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | TIRE | 44,942 | 75 km |
| 2000 | JOHNNY | 34,324 | 13 km |
| 1997 | PEREZ | 30,288 | 71 km |
| 2011 | WINDY | 24,687 | 67 km |
| 2005 | RANGE | 24,643 | 56 km |
| 2006 | LUMBRE | 15,598 | 65 km |
| 2006 | JET | 13,889 | 57 km |
| 1989 | BURGETTE | 10,576 | 89 km |
| 2011 | BURNING TENT | 9,473 | 16 km |
| 1992 | FRONTIER | 8,454 | 61 km |
| 1988 | ROSA | 7,387 | 66 km |
| 2000 | VAUGHN | 6,967 | 77 km |
| 1994 | WOODS | 6,016 | 78 km |
| 2011 | GARZA | 5,635 | 19 km |
| 1990 | REDONDO | 5,408 | 79 km |
| 1992 | NEWTON | 5,386 | 26 km |
| 1989 | BURGETTE | 4,935 | 29 km |
| 2015 | NORTH CUT | 4,353 | 40 km |
| 1998 | HEATHER | 4,249 | 65 km |
| 2008 | GOMEZ | 3,927 | 51 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 0.4 in | Driest |
| February | 43°F (6°C) | 0.4 in | |
| March | 49°F (10°C) | 0.5 in | |
| April | 57°F (14°C) | 0.9 in | |
| May | 66°F (19°C) | 1.3 in | |
| June | 74°F (23°C) | 1.8 in | |
| July | 79°F (26°C) | 2.3 in | Warmest |
| August | 76°F (24°C) | 2.9 in | Wettest |
| September | 69°F (21°C) | 2.0 in | |
| October | 59°F (15°C) | 1.5 in | |
| November | 48°F (9°C) | 0.6 in | |
| December | 40°F (4°C) | 0.5 in | Coldest |
Fort Sumner has a seasonal temperature swing of 40°F / from 40°F in December to 79°F in July. Total annual precipitation is 15.2 inches, with August being the wettest month (2.9") and January the driest (0.4").