San Diego, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Diego, a city in Jim Wells County, Texas.
This Afternoon
96°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 5pm. Mostly cloudy. High near 96, with temperatures falling to around 90 in the afternoon. Heat index values as high as 99. East wind around 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for San Diego
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 96°F | Slight Chance Showers And Thunderstorms | 13 mph E | 24% |
| Tonight | 74°F | Mostly Clear | 0 to 12 mph ESE | 8% |
| Saturday | 99°F | Sunny | 0 to 10 mph E | 1% |
| Saturday Night | 73°F | Mostly Clear | 1 to 14 mph SE | 0% |
| Sunday | 100°F | Sunny | 1 to 9 mph ESE | 2% |
| Sunday Night | 75°F | Partly Cloudy | 2 to 14 mph SE | 2% |
| Monday | 100°F | Sunny | 1 to 12 mph SE | 11% |
| Monday Night | 74°F | Mostly Clear | 0 to 13 mph ESE | 11% |
| Tuesday | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 13 mph ENE | 18% |
| Tuesday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 14 mph E | 18% |
| Wednesday | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 14 mph ENE | 17% |
| Wednesday Night | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 14 mph E | 17% |
| Thursday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 2 to 14 mph ENE | 24% |
| Thursday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 1 to 14 mph E | 24% |
Forecast source: National Weather Service (api.weather.gov) for San Diego (27.761, -98.239). Updated through the day.
Growing snapshot for San Diego
Last spring frost
Jan 29
First fall frost
Dec 29
Growing season
337 days
Hardiness zone
9b
More local growing data for San Diego: nearby ZIP 78332 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Airport Road Addition
Alice
Alice Acres
Amargosa
Ben Bolt
Coyote Acres
Flowella
Loma Linda East
Owl Ranch
Premont
Rancho Alegre
Westdale
Climate data from the nearest NOAA station, Alice, Tx (4.1 mi from San Diego). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.