Tomball, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tomball, a city in Harris County, Texas.
Overnight
77°F
Patchy Fog
Patchy fog. Mostly clear, with a low around 77. South wind around 5 mph.
7-day forecast for Tomball
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 77°F | Patchy Fog | 5 mph S | 0% |
| Tuesday | 99°F | Patchy Fog then Sunny | 0 to 5 mph S | 4% |
| Tuesday Night | 78°F | Mostly Clear | 5 to 10 mph S | 7% |
| Wednesday | 99°F | Sunny | 0 to 5 mph S | 10% |
| Wednesday Night | 77°F | Mostly Clear | 0 to 10 mph S | 10% |
| Thursday | 98°F | Sunny | 0 to 5 mph S | 10% |
| Thursday Night | 77°F | Mostly Clear | 0 to 10 mph S | 10% |
| Friday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 18% |
| Friday Night | 76°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 10 mph S | 18% |
| Saturday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 18% |
| Saturday Night | 76°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SE | 18% |
| Sunday | 95°F | Mostly Sunny | 0 to 10 mph SE | 14% |
| Sunday Night | 76°F | Partly Cloudy | 0 to 10 mph S | 14% |
| Monday | 95°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 10 mph S | 26% |
Forecast source: National Weather Service (api.weather.gov) for Tomball (30.095, -95.620). Updated through the day.
Growing snapshot for Tomball
Last spring frost
Feb 19
First fall frost
Dec 3
Growing season
290 days
Hardiness zone
9b
More local growing data for Tomball: nearby ZIP 77375 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Houston Hooks Mem Ap, Tx (2.6 mi from Tomball). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.