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Southampton 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 Southampton is April 1st. We recommend waiting until April 15th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Southampton is December 1st.
Growing Season
Based on historical data, the growing season in Southampton is approximately 244 days long.
Southampton Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Southampton Monthly Gardening Guide
January
In January, you can start Petunia indoors, start Geranium indoors, start Rosemary indoors, start Snapdragon indoors, and start Artichoke indoors.
February
In February, you can start Pepper indoors, start Marigold indoors, start Rue indoors, start Tomato indoors, and start Swamp Milkweed indoors.
March
In March, you can sow Kale outside, sow Radish outside, sow Swiss Chard outside, sow Hyssop outside, and sow Parsley outside.
April
In April, you can sow Babys Breath outside, sow Lima Bean outside, sow Zinnia outside, sow Cantaloupe outside, and sow Anise outside.