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Winchester Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:05 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Winchester is April 25th. We recommend waiting until May 9th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Winchester is November 15th.
Growing Season
Based on historical data, the growing season in Winchester is approximately 204 days long.
Winchester Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Winchester Monthly Gardening Guide
February
In February, you can start Ground Cherry indoors, start Begonia indoors, start Lavender indoors, start Cauliflower indoors, and start Oregano indoors.
March
In March, you can sow Chervil outside, sow Watercress outside, start Sage indoors, sow Radish outside, and sow Arugula outside.
April
In April, you can sow Lemon Balm outside, sow Swiss Chard outside, sow Fenugreek outside, sow Hyssop outside, and sow Gladiolus outside.
May
In May, you can sow Melon outside, sow Chia outside, sow Sesame outside, sow Runner Bean outside, and sow Butterfly Pea outside.