Dorchester, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dorchester, a city in Grayson County, Texas.
Tonight
74°F
Mostly Clear
Mostly clear. Low around 74, with temperatures rising to around 76 overnight. South wind around 5 mph.
7-day forecast for Dorchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 74°F | Mostly Clear | 5 mph S | 0% |
| Saturday | 97°F | Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 75°F | Mostly Clear | 10 mph S | 0% |
| Sunday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 15% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph S | 52% |
| Monday | 92°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SW | 52% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph NE | 17% |
| Tuesday | 90°F | Mostly Sunny | 10 mph NNE | 11% |
| Tuesday Night | 67°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Wednesday | 90°F | Mostly Sunny | 5 to 10 mph ENE | 7% |
| Wednesday Night | 68°F | Partly Cloudy | 5 mph ENE | 2% |
| Thursday | 91°F | Mostly Sunny | 5 mph E | 6% |
| Thursday Night | 68°F | Partly Cloudy | 5 mph ENE | 6% |
| Friday | 90°F | Mostly Sunny | 5 mph E | 4% |
Forecast source: National Weather Service (api.weather.gov) for Dorchester (33.531, -96.689). Updated through the day.
Growing snapshot for Dorchester
Last spring frost
Mar 14
First fall frost
Nov 19
Growing season
250 days
Hardiness zone
8a
More local growing data for Dorchester: nearby ZIP 75459 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Bells
Callisburg
Collinsville
Denison
Gunter
Howe
Knollwood
Lake Kiowa
Pottsboro
Sadler
Sherman
Sherwood Shores
Southmayd
Tioga
Tom Bean
Van Alstyne
Whitesboro
Whitewright
Climate data from the nearest NOAA station, Sherman, Tx (12.3 mi from Dorchester). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.