South River, NM Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South River, a community in San Juan County, New Mexico.
This Afternoon
75°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 75, with temperatures falling to around 71 in the afternoon. South wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for South River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Chance Showers And Thunderstorms | 5 mph S | 61% |
| Tonight | 53°F | Scattered Showers And Thunderstorms | 5 to 10 mph E | 32% |
| Saturday | 79°F | Sunny | 5 to 10 mph SE | 12% |
| Saturday Night | 49°F | Mostly Clear | 5 to 10 mph NE | 4% |
| Sunday | 79°F | Sunny | 5 to 10 mph SW | 1% |
| Sunday Night | 47°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Monday | 79°F | Mostly Sunny | 5 mph SE | 0% |
| Monday Night | 50°F | Partly Cloudy | 0 to 10 mph N | 8% |
| Tuesday | 75°F | Showers And Thunderstorms Likely | 10 mph E | 65% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 10 to 15 mph E | 72% |
| Wednesday | 72°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph E | 48% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 29% |
| Thursday | 72°F | Chance Rain Showers | 5 to 10 mph E | 42% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 46% |
Forecast source: National Weather Service (api.weather.gov) for South River (36.786, -108.058). Updated through the day.
Growing snapshot for South River
Last spring frost
May 12
First fall frost
Oct 6
Growing season
147 days
Hardiness zone
6b
More local growing data for South River: nearby ZIP 87415 weather · frost dates · planting calendar · New Mexico frost dates
Nearby towns & communities
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Fruitland
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La Plata
Lake Valley
Lee Acres
Nageezi
Napi Headquarters
Naschitti
Navajo Dam
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Climate data from the nearest NOAA station, Aztec Ruins Nm, Nm (5.4 mi from South River). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.