Fort Sumner, NM Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fort Sumner, a village in De Baca County, New Mexico.
This Afternoon
91°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 91, with temperatures falling to around 86 in the afternoon. Southwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Fort Sumner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 34% |
| Tonight | 63°F | Scattered Showers And Thunderstorms | 0 to 15 mph SW | 53% |
| Saturday | 91°F | Partly Sunny | 0 to 10 mph SW | 11% |
| Saturday Night | 62°F | Partly Cloudy | 0 to 10 mph SW | 13% |
| Sunday | 91°F | Sunny | 0 to 5 mph NW | 3% |
| Sunday Night | 61°F | Mostly Clear | 5 to 10 mph NE | 8% |
| Monday | 85°F | Mostly Sunny | 5 to 10 mph NE | 7% |
| Monday Night | 60°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph E | 58% |
| Tuesday | 78°F | Showers And Thunderstorms | 5 to 10 mph SE | 83% |
| Tuesday Night | 58°F | Showers And Thunderstorms | 5 mph SE | 86% |
| Wednesday | 74°F | Rain Showers | 5 to 10 mph SE | 86% |
| Wednesday Night | 57°F | Showers And Thunderstorms | 5 mph SE | 79% |
| Thursday | 76°F | Rain Showers Likely | 5 mph SE | 72% |
| Thursday Night | 58°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 72% |
Forecast source: National Weather Service (api.weather.gov) for Fort Sumner (34.487, -104.218). Updated through the day.
Growing snapshot for Fort Sumner
Last spring frost
Apr 18
First fall frost
Oct 26
Growing season
190 days
Hardiness zone
7a
More local growing data for Fort Sumner: nearby ZIP 88119 weather · frost dates · planting calendar · New Mexico frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ft Sumner 5 S, Nm (7.2 mi from Fort Sumner). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.