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🍂 First Frost Dates for Dietrich, Idaho 83324

The first 36°F frost date is 30% likely to be on Sep 14. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Sep 25. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Dietrich, ID 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 6
20% chanceSep 11
30% chanceSep 14
40% chanceSep 17
50% chanceSep 20
60% chanceSep 23
70% chanceSep 25
80% chanceSep 29
90% chanceOct 3
Probability of light freeze (32°F) on or before...
10% chanceSep 16
20% chanceSep 21
30% chanceSep 25
40% chanceSep 28
50% chanceSep 30
60% chanceOct 3
70% chanceOct 5
80% chanceOct 9
90% chanceOct 14
Probability of moderate freeze (28°F) on or before...
10% chanceSep 27
20% chanceOct 1
30% chanceOct 5
40% chanceOct 8
50% chanceOct 11
60% chanceOct 14
70% chanceOct 17
80% chanceOct 21
90% chanceOct 26
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 8
20% chanceOct 14
30% chanceOct 18
40% chanceOct 21
50% chanceOct 25
60% chanceOct 28
70% chanceNov 1
80% chanceNov 4
90% chanceNov 11
Probability of hard freeze (20°F) on or before...
10% chanceOct 21
20% chanceOct 27
30% chanceOct 31
40% chanceNov 3
50% chanceNov 6
60% chanceNov 11
70% chanceNov 15
80% chanceNov 19
90% chanceNov 24
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 1
20% chanceNov 6
30% chanceNov 11
40% chanceNov 16
50% chanceNov 20
60% chanceNov 23
70% chanceNov 26
80% chanceNov 29
90% chanceDec 4

Agricultural climatic data from weather station: SHOSHONE 1 WNW (USC00108380)

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