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🍂 First Frost Dates for Shumway, Illinois 62461

The first 36°F frost date is 30% likely to be on Oct 4. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 14. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Shumway, 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 27
20% chanceOct 1
30% chanceOct 4
40% chanceOct 6
50% chanceOct 9
60% chanceOct 13
70% chanceOct 16
80% chanceOct 19
90% chanceOct 24
Probability of light freeze (32°F) on or before...
10% chanceOct 5
20% chanceOct 10
30% chanceOct 14
40% chanceOct 18
50% chanceOct 21
60% chanceOct 24
70% chanceOct 27
80% chanceOct 31
90% chanceNov 4
Probability of moderate freeze (28°F) on or before...
10% chanceOct 15
20% chanceOct 21
30% chanceOct 26
40% chanceOct 29
50% chanceNov 1
60% chanceNov 4
70% chanceNov 7
80% chanceNov 11
90% chanceNov 17
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 26
20% chanceNov 1
30% chanceNov 5
40% chanceNov 8
50% chanceNov 12
60% chanceNov 15
70% chanceNov 19
80% chanceNov 24
90% chanceDec 1
Probability of hard freeze (20°F) on or before...
10% chanceNov 5
20% chanceNov 12
30% chanceNov 17
40% chanceNov 21
50% chanceNov 25
60% chanceNov 29
70% chanceDec 1
80% chanceDec 6
90% chanceDec 12
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 17
20% chanceNov 24
30% chanceNov 29
40% chanceDec 1
50% chanceDec 5
60% chanceDec 8
70% chanceDec 12
80% chanceDec 17
90% chanceDec 22

Agricultural climatic data from weather station: EFFINGHAM 3SW (USW00093816)

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