Grenville, NM Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grenville, a village in Union County, New Mexico.
This Afternoon
85°F
Mostly Sunny
Mostly sunny. High near 85, with temperatures falling to around 79 in the afternoon. Southwest wind around 20 mph. Chance of precipitation is 20%.
7-day forecast for Grenville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Mostly Sunny | 20 mph SW | 18% |
| Tonight | 57°F | Mostly Cloudy | 10 to 20 mph SW | 13% |
| Saturday | 84°F | Mostly Sunny then Isolated Showers And Thunderstorms | 5 to 15 mph W | 16% |
| Saturday Night | 54°F | Partly Cloudy | 10 to 15 mph W | 13% |
| Sunday | 78°F | Sunny | 5 to 10 mph NE | 10% |
| Sunday Night | 53°F | Partly Cloudy then Scattered Showers And Thunderstorms | 5 to 15 mph E | 35% |
| Monday | 72°F | Partly Sunny then Isolated Showers And Thunderstorms | 5 to 15 mph E | 22% |
| Monday Night | 51°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 to 15 mph S | 65% |
| Tuesday | 69°F | Showers And Thunderstorms Likely | 10 to 15 mph S | 63% |
| Tuesday Night | 52°F | Showers And Thunderstorms | 15 mph S | 79% |
| Wednesday | 67°F | Rain Showers Likely | 15 mph S | 69% |
| Wednesday Night | 53°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 53% |
| Thursday | 69°F | Chance Rain Showers | 10 to 15 mph SW | 50% |
| Thursday Night | 54°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 49% |
Forecast source: National Weather Service (api.weather.gov) for Grenville (36.591, -103.615). Updated through the day.
Growing snapshot for Grenville
Last spring frost
May 5
First fall frost
Oct 7
Growing season
153 days
Hardiness zone
6b
More local growing data for Grenville: nearby ZIP 88424 weather · frost dates · planting calendar · New Mexico frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Pasamonte, Nm (10.6 mi from Grenville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.