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🍂 First Frost Dates for Sheridan, Illinois 60551

The first 36°F frost date is 30% likely to be on Sep 29. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 9. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Sheridan, 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 22
20% chanceSep 26
30% chanceSep 29
40% chanceOct 1
50% chanceOct 4
60% chanceOct 7
70% chanceOct 10
80% chanceOct 14
90% chanceOct 20
Probability of light freeze (32°F) on or before...
10% chanceOct 1
20% chanceOct 5
30% chanceOct 9
40% chanceOct 13
50% chanceOct 16
60% chanceOct 19
70% chanceOct 22
80% chanceOct 26
90% chanceNov 1
Probability of moderate freeze (28°F) on or before...
10% chanceOct 10
20% chanceOct 16
30% chanceOct 21
40% chanceOct 24
50% chanceOct 27
60% chanceOct 31
70% chanceNov 2
80% chanceNov 6
90% chanceNov 11
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 21
20% chanceOct 27
30% chanceNov 1
40% chanceNov 3
50% chanceNov 7
60% chanceNov 10
70% chanceNov 13
80% chanceNov 18
90% chanceNov 23
Probability of hard freeze (20°F) on or before...
10% chanceNov 1
20% chanceNov 7
30% chanceNov 11
40% chanceNov 15
50% chanceNov 18
60% chanceNov 22
70% chanceNov 25
80% chanceNov 29
90% chanceDec 3
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 11
20% chanceNov 18
30% chanceNov 22
40% chanceNov 26
50% chanceNov 29
60% chanceDec 1
70% chanceDec 4
80% chanceDec 8
90% chanceDec 14

Agricultural climatic data from weather station: MARSEILLES LOCK (USC00115372)

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