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Weather in Castroville, TX · National Weather Service + NOAA

Castroville has hot summers

Castroville has warm winters and hot summers. A typical July afternoon reaches 96°, a January night drops to 40°, and snow is almost unheard of. Normal November highs come to 73°, and lows to 49°.

Winter 67°/42°Spring 82°/58°Summer 95°/73°Fall 82°/59°
Right now
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Sunrise 6:50 am · sunset 5:47 pm

Getting the latest forecast from the National Weather Service…

What stands out about Castroville’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Hot summersJuly afternoons average 96°, hotter than 97% of U.S. towns.Snow is rareNo measurable snow in a normal year.Plenty of 90° daysAbout 120 days a year reach 90°.Air-conditioning countryMore cooling degree days than 97% of U.S. towns.
A normal year

Where today sits in Castroville’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
67° / 42°
Snow is rare
Spring
82° / 58°
Last frost around Feb 24
Summer
95° / 73°
120 days reach 90° in a normal year
Fall now
82° / 59°
First frost around Dec 2
29 daysuntil the usual first frost (Dec 2)
Best months to be outside
JanFebMarAprOctNovDec
Highs of 62–84° and lows of 40° or more
How much snow does Castroville get?Almost none.When is it wettest?May, with 3.7 inches.Is it warmer than it used to be?+1.0° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Castroville.

Town Square →
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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Castroville itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Riomedina, TX (6 mi, snow) and Lytle 3w, TX (9 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.