🌷 Your Ultimate Garden Calendar!

🍂 First Frost Dates for York, Pennsylvania 17401

The first 36°F frost date is 30% likely to be on Oct 1. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 10. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for York, PA 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% chanceSep 23
20% chanceSep 28
30% chanceOct 1
40% chanceOct 2
50% chanceOct 4
60% chanceOct 7
70% chanceOct 10
80% chanceOct 14
90% chanceOct 19
Probability of light freeze (32°F) on or before...
10% chanceOct 3
20% chanceOct 6
30% chanceOct 10
40% chanceOct 13
50% chanceOct 16
60% chanceOct 19
70% chanceOct 23
80% chanceOct 28
90% chanceNov 2
Probability of moderate freeze (28°F) on or before...
10% chanceOct 13
20% chanceOct 17
30% chanceOct 22
40% chanceOct 25
50% chanceOct 29
60% chanceNov 1
70% chanceNov 3
80% chanceNov 7
90% chanceNov 12
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 23
20% chanceOct 29
30% chanceNov 2
40% chanceNov 5
50% chanceNov 9
60% chanceNov 13
70% chanceNov 16
80% chanceNov 20
90% chanceNov 27
Probability of hard freeze (20°F) on or before...
10% chanceNov 4
20% chanceNov 11
30% chanceNov 16
40% chanceNov 20
50% chanceNov 24
60% chanceNov 28
70% chanceDec 2
80% chanceDec 6
90% chanceDec 12
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 20
20% chanceNov 28
30% chanceDec 2
40% chanceDec 5
50% chanceDec 9
60% chanceDec 13
70% chanceDec 17
80% chanceDec 21
90% chanceDec 27

Agricultural climatic data from weather station: YORK 3 SSW PUMP STN (USC00369933)

Back to Weather Calendar