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
55°F
Areas Of Fog
Areas of fog. Partly cloudy, with a low around 55. North wind 0 to 5 mph.
7-day forecast for Sour Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Areas Of Fog | 0 to 5 mph N | 0% |
| Wednesday | 76°F | Patchy Fog then Sunny | 0 to 5 mph N | 0% |
| Wednesday Night | 51°F | Mostly Clear | 0 mph | 0% |
| Thursday | 79°F | Sunny | 0 mph | 3% |
| Thursday Night | 57°F | Partly Cloudy | 0 mph | 6% |
| Friday | 80°F | Sunny | 0 to 5 mph N | 2% |
| Friday Night | 55°F | Partly Cloudy | 0 to 5 mph N | 5% |
| Saturday | 74°F | Partly Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 5 mph NE | 15% |
| Sunday | 68°F | Mostly Sunny | 0 to 5 mph N | 9% |
| Sunday Night | 45°F | Partly Cloudy | 0 mph | 4% |
| Monday | 71°F | Sunny | 0 mph | 6% |
| Monday Night | 45°F | Mostly Clear | 0 mph | 2% |
| Tuesday | 74°F | Sunny | 0 mph | 3% |
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 Nov 4, 2026.