Tomball, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tomball, a city in Harris County, Texas.
This Afternoon
80°F
Partly Sunny
Partly sunny. High near 80, with temperatures falling to around 74 in the afternoon. Northwest wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Tomball
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Partly Sunny | 5 mph NW | 11% |
| Tonight | 55°F | Partly Cloudy | 5 mph N | 3% |
| Wednesday | 76°F | Sunny | 0 to 5 mph N | 0% |
| Wednesday Night | 53°F | Mostly Clear | 0 mph | 2% |
| Thursday | 79°F | Mostly Sunny then Chance Rain Showers | 0 to 5 mph SE | 26% |
| Thursday Night | 59°F | Slight Chance Rain Showers | 0 to 10 mph N | 19% |
| Friday | 77°F | Sunny | 5 to 10 mph N | 4% |
| Friday Night | 54°F | Mostly Clear | 5 mph N | 1% |
| Saturday | 73°F | Partly Sunny | 5 to 10 mph N | 9% |
| Saturday Night | 51°F | Mostly Cloudy | 5 mph N | 16% |
| Sunday | 71°F | Mostly Sunny | 5 to 10 mph N | 10% |
| Sunday Night | 48°F | Mostly Clear | 0 to 5 mph N | 4% |
| Monday | 73°F | Sunny | 0 to 5 mph N | 15% |
| Monday Night | 48°F | Mostly Clear | 0 mph | 0% |
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 Nov 4, 2026.