Frost Dates for Sunnyvale, TX

Based on data from Lavon Dam weather station, 17 miles away

Elevation: 486 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. March 10
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. November 19

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost March 18
First Fall Frost November 12

Hard Freeze (28°F)

Last Spring Hard Freeze February 26
First Fall Hard Freeze December 1
32.80°N, 96.56°W © OpenStreetMap

Growing Season

254 Days March 10 to November 19

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 8b

Avg. annual minimum: 15 to 20°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January54°44°34°
February58°48°38°
March65°56°46°
April73°63°53°
May80°71°63°
June88°79°70°
July92°83°73°
August93°83°73°
September87°76°66°
October77°66°55°
November65°55°45°
December56°46°36°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January3.9
February4.4
March5.8
April6.8
May7.8
June7.8
July5.6
August5.4
September6.5
October8.1
November6.0
December4.9

Sunrise / Sunset

Daylight Central Time (CT) Longest: 14h 11m · Shortest: 9h 49m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Central Time (CT))
Month Sunrise Sunset Daylight
January7:34 AM5:37 PM10h 03m
February7:16 AM6:05 PM10h 49m
March7:43 AM7:28 PM11h 45m
April7:01 AM7:51 PM12h 50m
May6:31 AM8:13 PM13h 42m
June6:21 AM8:31 PM14h 10m
July6:32 AM8:31 PM13h 59m
August6:53 AM8:07 PM13h 13m
September7:15 AM7:26 PM12h 12m
October7:36 AM6:46 PM11h 09m
November7:03 AM5:19 PM10h 16m
December7:27 AM5:17 PM9h 50m

Nearby Stations

Mckinney Muni AP, TX March 18 - November 11 Mckinney Municipal Airport, TX March 17 - November 15 Richardson, TX March 7 - November 21 Greenville Kgvl Radio, TX March 18 - November 16 Dallas Love Fld, TX March 2 - November 29 Terrell Muni AP, TX March 11 - November 18

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