Knollwood, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Knollwood, a city in Grayson County, Texas.
Today
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 101. South wind around 5 mph.
7-day forecast for Knollwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Sunny | 5 mph S | 2% |
| Tonight | 78°F | Mostly Clear | 5 mph SSE | 2% |
| Wednesday | 101°F | Sunny | 5 to 10 mph SSW | 0% |
| Wednesday Night | 78°F | Mostly Clear | 5 to 10 mph SSE | 0% |
| Thursday | 99°F | Sunny | 5 to 10 mph SSW | 2% |
| Thursday Night | 78°F | Mostly Clear | 5 to 10 mph SSE | 2% |
| Friday | 97°F | Sunny | 5 mph S | 11% |
| Friday Night | 76°F | Mostly Clear | 5 mph SSE | 11% |
| Saturday | 96°F | Sunny | 5 mph S | 7% |
| Saturday Night | 76°F | Mostly Clear | 5 mph SSE | 7% |
| Sunday | 96°F | Sunny | 5 to 10 mph S | 4% |
| Sunday Night | 77°F | Mostly Clear | 5 to 10 mph SSE | 4% |
| Monday | 96°F | Sunny | 5 to 10 mph S | 2% |
| Monday Night | 77°F | Mostly Clear | 10 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Knollwood (33.689, -96.618). Updated through the day.
Growing snapshot for Knollwood
Last spring frost
Mar 14
First fall frost
Nov 19
Growing season
250 days
Hardiness zone
8a
More local growing data for Knollwood: nearby ZIP 75020 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
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Callisburg
Collinsville
Denison
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Howe
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Pottsboro
Sadler
Sherman
Sherwood Shores
Southmayd
Tioga
Tom Bean
Van Alstyne
Whitesboro
Whitewright
Climate data from the nearest NOAA station, Sherman, Tx (5.2 mi from Knollwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.