🌷 Your Ultimate Garden Calendar!

🍂 First Frost Dates for Saint Augustine, Florida 32084

The first 36°F frost date is 30% likely to be on Dec 2. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Dec 15. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Saint Augustine, FL are based on historical climate data.

Always check your local forecast for the most up-to-date frost warnings.

Book Recommendations (ads!)

📚 Growing Under Cover: Techniques for a More Productive, Weather-Resistant, Pest-Free Vegetable Garden

📚 Greenhouse Gardening for Beginners: Step By Step Guide To Build A Year-Round Greenhouse And Grow Herbs, Organic Fruits And Vegetables, Plants, Flowers Plans & Ideas for Extending the Growing Season

📚 How to Garden Indoors & Grow Your Own Food Year Round: Ultimate Guide to Vertical, Container, and Hydroponic Gardening (Creative Homeowner) Vegetables, Herbs, DIY Projects, Composting, Lights, & More

📚 The Year-Round Vegetable Gardener: How to Grow Your Own Food 365 Days a Year, No Matter Where You Live

What is a First Frost Date?

The first fall frost signals the end of your local growing season. This date serves as an important deadline for gardeners and farmers. You'll need to complete harvesting before this point. Annuals and other tender plants will die back when frost hits, and perennial plants will enter their dormant phase for winter. Meanwhile, it's time to enjoy a cup of hot cocoa and a cozy sweater—and start planning your spring garden!

How to use the First Frost Date?

Watch your local weather forecasts in early fall to predict the first frost date. Harvest tender crops and protect vulnerable plants before frost arrives. For late-summer plantings, count backward from your area's average first frost date. This ensures your crops have enough time to mature. Keep track of when frost actually occurs in your garden each year. This helps you identify protected spots where the growing season might last longer.

First Frost Date Probabilities

Probability of frost (36°F) on or before...
10% chanceNov 20
20% chanceNov 28
30% chanceDec 2
40% chanceDec 6
50% chanceDec 10
60% chanceDec 15
70% chanceDec 21
80% chanceDec 28
90% chanceJan 6
Probability of light freeze (32°F) on or before...
10% chanceDec 3
20% chanceDec 9
30% chanceDec 15
40% chanceDec 20
50% chanceDec 26
60% chanceJan 1
70% chanceJan 6
80% chanceJan 14
90% chanceJan 27
Probability of moderate freeze (28°F) on or before...
10% chanceDec 12
20% chanceDec 19
30% chanceDec 26
40% chanceJan 1
50% chanceJan 4
60% chanceJan 9
70% chanceJan 17
80% chanceJan 26
90% chanceFeb 4
Probability of moderate hard freeze (24°F) on or before...
10% chanceDec 17
20% chanceDec 27
30% chanceJan 1
40% chanceJan 4
50% chanceJan 8
60% chanceJan 14
70% chanceJan 20
80% chanceJan 27
90% chanceFeb 4
Probability of hard freeze (20°F) on or before...
10% chanceDec 21
20% chanceDec 28
30% chanceJan 1
40% chanceJan 5
50% chanceJan 8
60% chanceJan 14
70% chanceJan 19
80% chanceJan 23
90% chanceJan 27
Probability of severe hard freeze (16°F) on or before...
10% chancerarely
20% chancerarely
30% chancerarely
40% chancerarely
50% chancerarely
60% chancerarely
70% chancerarely
80% chancerarely
90% chancerarely

Agricultural climatic data from weather station: ST AUGUSTINE LH (USC00087826)

Back to Weather Calendar