Lake Sumner, NM Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Sumner, a community in De Baca County, New Mexico.
This Afternoon
88°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 88, with temperatures falling to around 84 in the afternoon. Southwest wind around 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lake Sumner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 88°F | Chance Showers And Thunderstorms | 10 mph SW | 51% |
| Tonight | 64°F | Scattered Showers And Thunderstorms | 0 to 15 mph SW | 50% |
| Saturday | 90°F | Mostly Sunny | 0 to 10 mph SW | 12% |
| Saturday Night | 62°F | Partly Cloudy | 0 to 10 mph SW | 13% |
| Sunday | 89°F | Sunny | 0 to 5 mph W | 3% |
| Sunday Night | 61°F | Mostly Clear | 0 to 10 mph W | 5% |
| Monday | 83°F | Partly Sunny | 5 to 10 mph NE | 8% |
| Monday Night | 61°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SE | 58% |
| Tuesday | 76°F | Showers And Thunderstorms | 5 to 10 mph SE | 81% |
| Tuesday Night | 59°F | Showers And Thunderstorms | 5 to 10 mph SE | 88% |
| Wednesday | 71°F | Rain Showers | 5 to 10 mph SE | 87% |
| Wednesday Night | 58°F | Showers And Thunderstorms | 0 to 5 mph SE | 78% |
| Thursday | 74°F | Rain Showers Likely | 5 mph SE | 71% |
| Thursday Night | 59°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 72% |
Forecast source: National Weather Service (api.weather.gov) for Lake Sumner (34.624, -104.402). Updated through the day.
Growing snapshot for Lake Sumner
Last spring frost
Apr 18
First fall frost
Oct 26
Growing season
190 days
Hardiness zone
7a
More local growing data for Lake 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 Lake Sumner). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.