🍂 2026 First Frost Dates for Saint George, Utah 84790
The first 36°F frost date is 30% likely to be on Oct 27. (See detailed probabilities below.)
The first 32°F light freeze date is 30% likely to be on Nov 5. (See detailed probabilities below.)
(See also 🌷 Last Spring Frost Dates.)
First frost date probabilities for Saint George, UT 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% chance | Oct 19 |
| 20% chance | Oct 24 |
| 30% chance | Oct 27 |
| 40% chance | Oct 30 |
| 50% chance | Nov 1 |
| 60% chance | Nov 4 |
| 70% chance | Nov 6 |
| 80% chance | Nov 9 |
| 90% chance | Nov 12 |
| Probability of light freeze (32°F) on or before... | |
|---|---|
| 10% chance | Oct 27 |
| 20% chance | Nov 1 |
| 30% chance | Nov 5 |
| 40% chance | Nov 8 |
| 50% chance | Nov 10 |
| 60% chance | Nov 12 |
| 70% chance | Nov 15 |
| 80% chance | Nov 18 |
| 90% chance | Nov 22 |
| Probability of moderate freeze (28°F) on or before... | |
|---|---|
| 10% chance | Nov 7 |
| 20% chance | Nov 13 |
| 30% chance | Nov 15 |
| 40% chance | Nov 18 |
| 50% chance | Nov 20 |
| 60% chance | Nov 22 |
| 70% chance | Nov 25 |
| 80% chance | Nov 29 |
| 90% chance | Dec 3 |
| Probability of moderate hard freeze (24°F) on or before... | |
|---|---|
| 10% chance | Nov 18 |
| 20% chance | Nov 22 |
| 30% chance | Nov 24 |
| 40% chance | Nov 28 |
| 50% chance | Dec 1 |
| 60% chance | Dec 4 |
| 70% chance | Dec 8 |
| 80% chance | Dec 12 |
| 90% chance | Dec 18 |
| Probability of hard freeze (20°F) on or before... | |
|---|---|
| 10% chance | Nov 27 |
| 20% chance | Dec 4 |
| 30% chance | Dec 8 |
| 40% chance | Dec 11 |
| 50% chance | Dec 16 |
| 60% chance | Dec 20 |
| 70% chance | Dec 27 |
| 80% chance | Jan 1 |
| 90% chance | Jan 13 |
| Probability of severe hard freeze (16°F) on or before... | |
|---|---|
| 10% chance | Dec 5 |
| 20% chance | Dec 11 |
| 30% chance | Dec 16 |
| 40% chance | Dec 21 |
| 50% chance | Dec 25 |
| 60% chance | Dec 30 |
| 70% chance | Jan 1 |
| 80% chance | Jan 6 |
| 90% chance | Jan 18 |
Agricultural climatic data from weather station: ST GEORGE (USC00427516:frost)