Karnes City, TX Weather & Growing Conditions
Today
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 109. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Sunny | 10 to 15 mph SSE | 3% |
| Tonight | 76°F | Mostly Clear | 5 to 15 mph SE | 3% |
| Wednesday | 100°F | Sunny | 5 to 15 mph SSE | 1% |
| Wednesday Night | 76°F | Mostly Clear | 5 to 15 mph SE | 1% |
| Thursday | 100°F | Sunny | 5 to 15 mph SSE | 5% |
| Thursday Night | 76°F | Mostly Clear | 5 to 15 mph SSE | 5% |
| Friday | 98°F | Mostly Sunny | 0 to 10 mph SE | 12% |
| Friday Night | 75°F | Partly Cloudy then Slight Chance Rain Showers | 0 to 15 mph SE | 15% |
| Saturday | 97°F | Slight Chance Rain Showers then Sunny | 0 to 10 mph SE | 15% |
| Saturday Night | 75°F | Mostly Clear | 0 to 10 mph SE | 5% |
| Sunday | 97°F | Sunny | 0 to 10 mph SE | 9% |
| Sunday Night | 75°F | Mostly Clear | 5 to 15 mph SE | 9% |
| Monday | 98°F | Mostly Sunny | 0 to 15 mph SE | 8% |
| Monday Night | 76°F | Mostly Clear | 10 to 15 mph SSE | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Karnes City, TX
Last spring frost
Feb 16
First fall frost
Dec 9
Growing season
300 days
Hardiness zone
9a
Explore more for Karnes City, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Karnes City 2N, Tx (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.