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🍂 First Frost Dates for Helena, Oklahoma 73741

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

The first 32°F light freeze date is 30% likely to be on Oct 24. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Helena, OK 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% chanceOct 2
20% chanceOct 9
30% chanceOct 14
40% chanceOct 18
50% chanceOct 21
60% chanceOct 24
70% chanceOct 26
80% chanceOct 30
90% chanceNov 3
Probability of light freeze (32°F) on or before...
10% chanceOct 16
20% chanceOct 21
30% chanceOct 24
40% chanceOct 27
50% chanceOct 30
60% chanceNov 1
70% chanceNov 4
80% chanceNov 7
90% chanceNov 12
Probability of moderate freeze (28°F) on or before...
10% chanceOct 24
20% chanceOct 29
30% chanceNov 1
40% chanceNov 4
50% chanceNov 6
60% chanceNov 10
70% chanceNov 13
80% chanceNov 17
90% chanceNov 22
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 31
20% chanceNov 5
30% chanceNov 10
40% chanceNov 13
50% chanceNov 17
60% chanceNov 20
70% chanceNov 23
80% chanceNov 27
90% chanceDec 2
Probability of hard freeze (20°F) on or before...
10% chanceNov 10
20% chanceNov 16
30% chanceNov 20
40% chanceNov 24
50% chanceNov 27
60% chanceDec 1
70% chanceDec 3
80% chanceDec 7
90% chanceDec 15
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 20
20% chanceNov 26
30% chanceDec 1
40% chanceDec 4
50% chanceDec 7
60% chanceDec 11
70% chanceDec 16
80% chanceDec 23
90% chanceDec 31

Agricultural climatic data from weather station: HELENA 1 SSE (USC00344019)

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