Karnes City, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Karnes City, a city in Karnes County, Texas.
Overnight
55°F
Clear
Clear, with a low around 55. North wind around 5 mph.
7-day forecast for Karnes City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Clear | 5 mph N | 0% |
| Wednesday | 76°F | Sunny | 5 mph NNE | 0% |
| Wednesday Night | 55°F | Clear | 0 to 5 mph E | 0% |
| Thursday | 80°F | Sunny | 0 to 5 mph ESE | 3% |
| Thursday Night | 62°F | Partly Cloudy | 0 to 15 mph NE | 9% |
| Friday | 76°F | Sunny | 10 to 15 mph N | 1% |
| Friday Night | 55°F | Partly Cloudy | 5 to 10 mph NNE | 0% |
| Saturday | 71°F | Partly Sunny | 10 to 15 mph NNE | 13% |
| Saturday Night | 53°F | Chance Rain Showers | 5 to 15 mph NNE | 30% |
| Sunday | 67°F | Slight Chance Rain Showers then Partly Sunny | 5 to 15 mph NNE | 18% |
| Sunday Night | 49°F | Partly Cloudy | 0 to 5 mph NNE | 7% |
| Monday | 69°F | Sunny | 0 to 5 mph NE | 4% |
| Monday Night | 49°F | Partly Cloudy | 0 mph | 1% |
| Tuesday | 72°F | Mostly Sunny | 0 to 5 mph ESE | 8% |
Forecast source: National Weather Service (api.weather.gov) for Karnes City (28.885, -97.901). Updated through the day.
Growing snapshot for Karnes City
Last spring frost
Feb 16
First fall frost
Dec 9
Growing season
300 days
Hardiness zone
9a
More local growing data for Karnes City: nearby ZIP 78118 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Karnes City 2N, Tx (4.3 mi from Karnes City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.