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Seguin, TX Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Seguin, a city in Guadalupe County, Texas.

Overnight
73°F
Mostly Clear
Mostly clear, with a low around 73. East southeast wind around 0 mph.

7-day forecast for Seguin

WhenTempForecastWindPrecip
Overnight 73°F Mostly Clear 0 mph 0%
Saturday 98°F Mostly Sunny 0 to 5 mph ESE 0%
Saturday Night 73°F Mostly Clear 0 to 10 mph S 0%
Sunday 98°F Mostly Sunny 0 to 5 mph S 0%
Sunday Night 75°F Partly Cloudy 0 to 5 mph SSE 2%
Monday 98°F Sunny 0 to 5 mph SSE 13%
Monday Night 75°F Mostly Clear 0 to 5 mph SSE 13%
Tuesday 98°F Sunny 0 to 10 mph NE 12%
Tuesday Night 75°F Slight Chance Showers And Thunderstorms 0 to 10 mph E 18%
Wednesday 98°F Slight Chance Rain Showers then Mostly Sunny 0 to 10 mph NE 18%
Wednesday Night 74°F Partly Cloudy 0 to 10 mph E 8%
Thursday 97°F Mostly Sunny 0 to 10 mph ENE 6%
Thursday Night 73°F Partly Cloudy 0 to 10 mph E 3%
Friday 97°F Mostly Sunny 0 to 10 mph ENE 4%

Forecast source: National Weather Service (api.weather.gov) for Seguin (29.590, -97.969). Updated through the day.

Growing snapshot for Seguin

Last spring frost
Mar 1
First fall frost
Nov 26
Growing season
273 days
Hardiness zone
9a

More local growing data for Seguin: nearby ZIP 78155 weather · frost dates · planting calendar · Texas frost dates

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Climate data from the nearest NOAA station, Austin San Antonio, Tx (12.7 mi from Seguin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.