Saint Jo, TX Weather & Growing Conditions
Today
102°F
Sunny
Sunny, with a high near 102. Heat index values as high as 102. South wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 102°F | Sunny | 5 to 10 mph S | 0% |
| Tonight | 77°F | Mostly Clear | 5 to 10 mph SSE | 0% |
| Wednesday | 101°F | Sunny | 5 to 10 mph SSW | 0% |
| Wednesday Night | 76°F | Mostly Clear | 10 mph S | 0% |
| Thursday | 100°F | Sunny | 5 to 10 mph S | 4% |
| Thursday Night | 77°F | Mostly Clear | 5 to 10 mph SSE | 4% |
| Friday | 97°F | Mostly Sunny | 5 to 10 mph S | 14% |
| Friday Night | 75°F | Mostly Clear | 5 to 10 mph SSE | 14% |
| Saturday | 98°F | Sunny | 5 to 10 mph S | 9% |
| Saturday Night | 76°F | Mostly Clear | 10 mph SSE | 9% |
| Sunday | 97°F | Sunny | 10 mph S | 4% |
| Sunday Night | 76°F | Mostly Clear | 10 mph SSE | 4% |
| Monday | 98°F | Sunny | 10 mph S | 4% |
| Monday Night | 76°F | Mostly Clear | 10 to 15 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Saint Jo, TX
Last spring frost
Mar 24
First fall frost
Nov 8
Growing season
229 days
Hardiness zone
8a
Explore more for Saint Jo, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Bonita 7Nw, Tx (13 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.