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🍂 First Frost Dates for Grenville, New Mexico 88424

The first 36°F frost date is 30% likely to be on Sep 23. (See detailed probabilities below.)

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

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Grenville, NM 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 16
20% chanceSep 20
30% chanceSep 23
40% chanceSep 26
50% chanceSep 28
60% chanceOct 1
70% chanceOct 3
80% chanceOct 5
90% chanceOct 9
Probability of light freeze (32°F) on or before...
10% chanceSep 22
20% chanceSep 27
30% chanceSep 30
40% chanceOct 3
50% chanceOct 5
60% chanceOct 7
70% chanceOct 10
80% chanceOct 13
90% chanceOct 17
Probability of moderate freeze (28°F) on or before...
10% chanceSep 29
20% chanceOct 4
30% chanceOct 7
40% chanceOct 10
50% chanceOct 13
60% chanceOct 16
70% chanceOct 18
80% chanceOct 21
90% chanceOct 25
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 8
20% chanceOct 14
30% chanceOct 17
40% chanceOct 20
50% chanceOct 23
60% chanceOct 26
70% chanceOct 28
80% chanceOct 31
90% chanceNov 5
Probability of hard freeze (20°F) on or before...
10% chanceOct 19
20% chanceOct 24
30% chanceOct 28
40% chanceOct 31
50% chanceNov 2
60% chanceNov 5
70% chanceNov 8
80% chanceNov 12
90% chanceNov 16
Probability of severe hard freeze (16°F) on or before...
10% chanceOct 28
20% chanceNov 2
30% chanceNov 5
40% chanceNov 9
50% chanceNov 12
60% chanceNov 15
70% chanceNov 18
80% chanceNov 22
90% chanceNov 27

Agricultural climatic data from weather station: GRENVILLE (USC00293706)

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