Pena, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pena, a community in Starr County, Texas.
This Afternoon
100°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 100. Heat index values as high as 110. East northeast wind around 6 mph. Chance of precipitation is 20%.
7-day forecast for Pena
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Slight Chance Showers And Thunderstorms | 6 mph ENE | 21% |
| Tonight | 78°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 7 mph ESE | 19% |
| Saturday | 102°F | Sunny | 1 to 5 mph ESE | 2% |
| Saturday Night | 77°F | Mostly Clear | 2 to 7 mph ESE | 1% |
| Sunday | 103°F | Sunny | 5 mph SE | 1% |
| Sunday Night | 78°F | Partly Cloudy | 3 to 7 mph SE | 1% |
| Monday | 104°F | Sunny | 2 to 6 mph ESE | 4% |
| Monday Night | 78°F | Mostly Clear | 2 to 8 mph ESE | 6% |
| Tuesday | 102°F | Sunny then Slight Chance Showers And Thunderstorms | 1 to 8 mph ESE | 23% |
| Tuesday Night | 78°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 9 mph E | 23% |
| Wednesday | 100°F | Chance Showers And Thunderstorms | 0 to 8 mph E | 38% |
| Wednesday Night | 77°F | Chance Showers And Thunderstorms | 0 to 8 mph ENE | 38% |
| Thursday | 100°F | Chance Showers And Thunderstorms | 0 to 6 mph ENE | 44% |
| Thursday Night | 76°F | Chance Showers And Thunderstorms | 0 to 6 mph ENE | 44% |
Forecast source: National Weather Service (api.weather.gov) for Pena (26.416, -98.970). Updated through the day.
Growing snapshot for Pena
Last spring frost
Jan 9
First fall frost
Jan 1
Growing season
363 days
Hardiness zone
9b
More local growing data for Pena: nearby ZIP 78585 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Falcon Dam, Tx (6.2 mi from Pena). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.