Port O'Connor, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Port O'Connor, a community in Calhoun County, Texas.
Today
90°F
Sunny
Sunny, with a high near 90. Heat index values as high as 99. East wind 5 to 12 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Port O'Connor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Sunny | 5 to 12 mph E | 13% |
| Tonight | 82°F | Mostly Clear | 3 to 12 mph SSE | 2% |
| Sunday | 90°F | Sunny | 3 to 10 mph SE | 7% |
| Sunday Night | 82°F | Partly Cloudy | 5 to 10 mph SE | 3% |
| Monday | 91°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph SE | 15% |
| Monday Night | 82°F | Mostly Clear | 2 to 10 mph SE | 8% |
| Tuesday | 92°F | Sunny | 2 to 10 mph ENE | 12% |
| Tuesday Night | 82°F | Mostly Clear | 2 to 12 mph ESE | 7% |
| Wednesday | 91°F | Sunny | 5 to 14 mph ENE | 13% |
| Wednesday Night | 82°F | Mostly Clear | 6 to 14 mph E | 13% |
| Thursday | 90°F | Slight Chance Showers And Thunderstorms | 8 to 15 mph ENE | 19% |
| Thursday Night | 81°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 9 to 15 mph E | 17% |
| Friday | 89°F | Mostly Sunny then Slight Chance Rain Showers | 10 to 14 mph E | 15% |
| Friday Night | 80°F | Slight Chance Rain Showers then Mostly Clear | 9 to 15 mph E | 15% |
Forecast source: National Weather Service (api.weather.gov) for Port O'Connor (28.446, -96.420). Updated through the day.
Growing snapshot for Port O'Connor
Last spring frost
Feb 4
First fall frost
Dec 27
Growing season
323 days
Hardiness zone
9b
More local growing data for Port O'Connor: nearby ZIP 77982 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Port O'connor, Tx (4 mi from Port O'Connor). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.