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🍂 First Frost Dates for Park Ridge, Illinois 60068

The first 36°F frost date is 30% likely to be on Oct 7. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 18. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Park Ridge, 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% chanceSep 30
20% chanceOct 4
30% chanceOct 7
40% chanceOct 10
50% chanceOct 13
60% chanceOct 16
70% chanceOct 19
80% chanceOct 22
90% chanceOct 26
Probability of light freeze (32°F) on or before...
10% chanceOct 9
20% chanceOct 14
30% chanceOct 18
40% chanceOct 21
50% chanceOct 24
60% chanceOct 27
70% chanceOct 30
80% chanceNov 1
90% chanceNov 6
Probability of moderate freeze (28°F) on or before...
10% chanceOct 19
20% chanceOct 25
30% chanceOct 29
40% chanceNov 1
50% chanceNov 3
60% chanceNov 6
70% chanceNov 10
80% chanceNov 14
90% chanceNov 19
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 30
20% chanceNov 4
30% chanceNov 8
40% chanceNov 12
50% chanceNov 15
60% chanceNov 18
70% chanceNov 21
80% chanceNov 25
90% chanceNov 29
Probability of hard freeze (20°F) on or before...
10% chanceNov 8
20% chanceNov 15
30% chanceNov 19
40% chanceNov 22
50% chanceNov 25
60% chanceNov 28
70% chanceDec 1
80% chanceDec 5
90% chanceDec 11
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 19
20% chanceNov 25
30% chanceNov 29
40% chanceDec 1
50% chanceDec 4
60% chanceDec 7
70% chanceDec 11
80% chanceDec 15
90% chanceDec 20

Agricultural climatic data from weather station: GLENVIEW NAS (USW00014855)

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