Bonham, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonham, a city in Fannin County, Texas.
Today
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 99. South wind 5 to 10 mph.
7-day forecast for Bonham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 5 to 10 mph S | 0% |
| Tonight | 76°F | Mostly Clear | 5 to 10 mph SSE | 0% |
| Wednesday | 101°F | Sunny | 5 to 10 mph SSW | 0% |
| Wednesday Night | 77°F | Mostly Clear | 5 to 10 mph SSE | 0% |
| Thursday | 99°F | Sunny | 10 mph SSW | 3% |
| Thursday Night | 77°F | Mostly Clear | 5 to 10 mph SSE | 3% |
| Friday | 97°F | Sunny | 5 to 10 mph S | 13% |
| Friday Night | 76°F | Mostly Clear | 5 to 10 mph SSE | 13% |
| Saturday | 97°F | Sunny | 5 to 10 mph S | 10% |
| Saturday Night | 75°F | Mostly Clear | 5 to 10 mph SSE | 10% |
| Sunday | 97°F | Sunny | 5 to 10 mph S | 5% |
| Sunday Night | 76°F | Mostly Clear | 5 to 10 mph SSE | 5% |
| Monday | 97°F | Sunny | 10 to 15 mph S | 2% |
| Monday Night | 76°F | Mostly Clear | 10 mph S | 2% |
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 Aug 4, 2026.