Sour Lake, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sour Lake, a city in Hardin County, Texas.
Overnight
70°F
Clear
Clear, with a low around 70. Wind around 0 mph.
7-day forecast for Sour Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Clear | 0 mph | 0% |
| Saturday | 92°F | Sunny | 0 to 5 mph E | 0% |
| Saturday Night | 71°F | Mostly Clear | 0 to 5 mph SE | 4% |
| Sunday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 23% |
| Sunday Night | 72°F | Partly Cloudy | 0 to 5 mph SE | 0% |
| Monday | 93°F | Sunny | 0 mph | 10% |
| Monday Night | 73°F | Mostly Clear | 0 mph | 10% |
| Tuesday | 94°F | Sunny | 0 mph | 12% |
| Tuesday Night | 73°F | Mostly Clear | 0 mph | 12% |
| Wednesday | 93°F | Sunny | 0 to 5 mph NE | 5% |
| Wednesday Night | 72°F | Mostly Clear | 0 mph | 5% |
| Thursday | 91°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Thursday Night | 70°F | Partly Cloudy | 0 mph | 4% |
| Friday | 90°F | Mostly Sunny | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Sour Lake (30.138, -94.404). Updated through the day.
Growing snapshot for Sour Lake
Last spring frost
Feb 18
First fall frost
Dec 2
Growing season
291 days
Hardiness zone
9a
More local growing data for Sour Lake: nearby ZIP 77659 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Beaumont Rsch Ctr, Tx (10.9 mi from Sour Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.