Bonham, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonham, a city in Fannin County, Texas.
Tonight
72°F
Clear
Clear. Low around 72, with temperatures rising to around 74 overnight. South wind around 5 mph.
7-day forecast for Bonham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Clear | 5 mph S | 0% |
| Saturday | 99°F | Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 73°F | Mostly Clear | 5 to 10 mph S | 0% |
| Sunday | 99°F | Mostly Sunny | 5 to 10 mph S | 9% |
| Sunday Night | 72°F | Chance Rain Showers | 5 mph SSW | 45% |
| Monday | 95°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SW | 45% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph NE | 20% |
| Tuesday | 93°F | Mostly Sunny | 5 to 10 mph NNE | 10% |
| Tuesday Night | 67°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 93°F | Mostly Sunny | 5 to 10 mph ENE | 6% |
| Wednesday Night | 66°F | Mostly Clear | 5 to 10 mph ENE | 1% |
| Thursday | 93°F | Sunny | 5 to 10 mph E | 5% |
| Thursday Night | 67°F | Partly Cloudy | 5 to 10 mph E | 5% |
| Friday | 93°F | Mostly Sunny | 5 to 10 mph E | 4% |
Forecast source: National Weather Service (api.weather.gov) for Bonham (33.588, -96.190). Updated through the day.
Growing snapshot for Bonham
Last spring frost
Mar 16
First fall frost
Nov 13
Growing season
242 days
Hardiness zone
8a
More local growing data for Bonham: nearby ZIP 75418 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bonham 3Nne, Tx (4.7 mi from Bonham). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.