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.
This Afternoon
81°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny. High near 81, with temperatures falling to around 77 in the afternoon. Heat index values as high as 85. West wind around 12 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Port O'Connor
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Showers And Thunderstorms Likely | 12 mph W | 69% |
| Tonight | 64°F | Slight Chance Rain Showers then Partly Cloudy | 10 mph N | 22% |
| Wednesday | 75°F | Sunny | 6 to 10 mph NNE | 0% |
| Wednesday Night | 69°F | Mostly Clear | 6 mph ESE | 7% |
| Thursday | 78°F | Mostly Sunny then Chance Rain Showers | 5 to 9 mph ESE | 30% |
| Thursday Night | 67°F | Showers And Thunderstorms Likely | 3 to 9 mph NE | 57% |
| Friday | 76°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 9 to 15 mph N | 24% |
| Friday Night | 63°F | Mostly Clear | 13 mph N | 4% |
| Saturday | 73°F | Chance Rain Showers | 14 mph NNE | 31% |
| Saturday Night | 62°F | Chance Rain Showers | 12 to 15 mph NNE | 31% |
| Sunday | 71°F | Slight Chance Rain Showers then Mostly Sunny | 12 to 15 mph NNE | 17% |
| Sunday Night | 60°F | Mostly Clear | 8 to 12 mph N | 9% |
| Monday | 71°F | Sunny | 9 mph NNE | 5% |
| Monday Night | 63°F | Mostly Clear | 5 to 8 mph NE | 2% |
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 Nov 3, 2026.