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🍂 First Frost Dates for Cypress, Illinois 62923

The first 36°F frost date is 30% likely to be on Oct 16. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 27. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Cypress, IL are based on historical climate data.

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

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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% chanceOct 7
20% chanceOct 12
30% chanceOct 16
40% chanceOct 19
50% chanceOct 22
60% chanceOct 24
70% chanceOct 27
80% chanceOct 31
90% chanceNov 4
Probability of light freeze (32°F) on or before...
10% chanceOct 17
20% chanceOct 23
30% chanceOct 27
40% chanceOct 30
50% chanceNov 1
60% chanceNov 5
70% chanceNov 8
80% chanceNov 13
90% chanceNov 18
Probability of moderate freeze (28°F) on or before...
10% chanceOct 28
20% chanceNov 2
30% chanceNov 7
40% chanceNov 11
50% chanceNov 15
60% chanceNov 18
70% chanceNov 22
80% chanceNov 27
90% chanceDec 2
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 4
20% chanceNov 12
30% chanceNov 18
40% chanceNov 23
50% chanceNov 27
60% chanceDec 1
70% chanceDec 3
80% chanceDec 7
90% chanceDec 14
Probability of hard freeze (20°F) on or before...
10% chanceNov 16
20% chanceNov 26
30% chanceDec 1
40% chanceDec 4
50% chanceDec 7
60% chanceDec 11
70% chanceDec 16
80% chanceDec 21
90% chanceDec 27
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 30
20% chanceDec 5
30% chanceDec 9
40% chanceDec 13
50% chanceDec 18
60% chanceDec 23
70% chanceDec 27
80% chanceJan 1
90% chanceJan 10

Agricultural climatic data from weather station: GRAND CHAIN DAM 53 (USC00113580)

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