Lamar, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lamar, a community in Aransas County, Texas.
Overnight
81°F
Mostly Clear
Mostly clear, with a low around 81. Heat index values as high as 93. South wind around 9 mph.
7-day forecast for Lamar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 81°F | Mostly Clear | 9 mph S | 0% |
| Tuesday | 91°F | Sunny | 8 to 13 mph SSE | 2% |
| Tuesday Night | 82°F | Mostly Clear | 8 to 13 mph SSE | 1% |
| Wednesday | 91°F | Sunny | 8 to 12 mph SSE | 1% |
| Wednesday Night | 82°F | Mostly Clear | 8 to 12 mph SSE | 1% |
| Thursday | 92°F | Sunny | 7 to 12 mph SSE | 4% |
| Thursday Night | 81°F | Mostly Clear | 5 to 12 mph SSE | 4% |
| Friday | 91°F | Sunny | 3 to 10 mph SSE | 10% |
| Friday Night | 82°F | Mostly Clear | 3 to 13 mph SE | 7% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms | 2 to 12 mph SE | 15% |
| Saturday Night | 82°F | Mostly Clear | 5 to 12 mph SE | 6% |
| Sunday | 88°F | Mostly Sunny | 3 to 13 mph SSE | 13% |
| Sunday Night | 82°F | Partly Cloudy | 7 to 13 mph SSE | 12% |
| Monday | 88°F | Mostly Sunny | 7 to 15 mph SSE | 8% |
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 Aug 4, 2026.