Lamar, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamar, a community in Aransas County, Texas.
Today
93°F
Slight Chance Rain Showers then Sunny
A slight chance of rain showers before noon. Sunny, with a high near 93. Heat index values as high as 103. East southeast wind 6 to 10 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Lamar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Slight Chance Rain Showers then Sunny | 6 to 10 mph ESE | 16% |
| Tonight | 79°F | Mostly Clear | 3 to 10 mph SE | 4% |
| Sunday | 93°F | Sunny | 2 to 10 mph E | 14% |
| Sunday Night | 80°F | Partly Cloudy | 3 to 10 mph SE | 5% |
| Monday | 93°F | Slight Chance Showers And Thunderstorms | 2 to 9 mph SE | 20% |
| Monday Night | 80°F | Mostly Clear | 1 to 9 mph SE | 14% |
| Tuesday | 94°F | Slight Chance Showers And Thunderstorms | 1 to 9 mph E | 15% |
| Tuesday Night | 81°F | Mostly Clear | 0 to 9 mph ESE | 9% |
| Wednesday | 91°F | Slight Chance Showers And Thunderstorms | 3 to 12 mph ENE | 16% |
| Wednesday Night | 81°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 to 12 mph E | 16% |
| Thursday | 90°F | Slight Chance Showers And Thunderstorms | 6 to 14 mph ENE | 24% |
| Thursday Night | 80°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 to 14 mph E | 17% |
| Friday | 90°F | Slight Chance Rain Showers | 7 to 13 mph E | 16% |
| Friday Night | 80°F | Slight Chance Rain Showers then Mostly Clear | 6 to 13 mph E | 16% |
Forecast source: National Weather Service (api.weather.gov) for Lamar (28.140, -96.988). Updated through the day.
Growing snapshot for Lamar
Last spring frost
Jan 23
First fall frost
Jan 1
Growing season
347 days
Hardiness zone
9b
More local growing data for Lamar: nearby ZIP 78382 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rockport Aransas Co Ap, Tx (2 mi from Lamar). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.