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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.

Overnight
81°F
Mostly Clear
Mostly clear, with a low around 81. Heat index values as high as 92. Southeast wind around 8 mph.

7-day forecast for Port O'Connor

WhenTempForecastWindPrecip
Overnight 81°F Mostly Clear 8 mph SE 12%
Saturday 90°F Sunny 5 to 12 mph E 13%
Saturday Night 81°F Mostly Clear 3 to 12 mph SE 3%
Sunday 90°F Sunny 3 to 10 mph SE 14%
Sunday Night 82°F Partly Cloudy 5 to 10 mph SE 3%
Monday 91°F Sunny 3 to 10 mph SE 14%
Monday Night 82°F Mostly Clear 2 to 10 mph SE 10%
Tuesday 90°F Slight Chance Showers And Thunderstorms 2 to 12 mph E 17%
Tuesday Night 82°F Mostly Clear 2 to 12 mph ESE 11%
Wednesday 91°F Sunny then Slight Chance Showers And Thunderstorms 5 to 14 mph ENE 15%
Wednesday Night 82°F Slight Chance Showers And Thunderstorms then Mostly Clear 7 to 14 mph E 15%
Thursday 90°F Chance Showers And Thunderstorms 8 to 15 mph ENE 25%
Thursday Night 81°F Slight Chance Showers And Thunderstorms then Mostly Clear 8 to 15 mph ENE 15%
Friday 90°F Slight Chance Showers And Thunderstorms 10 to 15 mph ENE 18%

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

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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.