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🍂 First Frost Dates for Springfield, Oregon 97478

The first 36°F frost date is 30% likely to be on Oct 7. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 29. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Springfield, OR 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 26
20% chanceOct 2
30% chanceOct 7
40% chanceOct 13
50% chanceOct 17
60% chanceOct 21
70% chanceOct 24
80% chanceOct 28
90% chanceNov 4
Probability of light freeze (32°F) on or before...
10% chanceOct 17
20% chanceOct 24
30% chanceOct 29
40% chanceNov 2
50% chanceNov 7
60% chanceNov 12
70% chanceNov 18
80% chanceNov 25
90% chanceDec 3
Probability of moderate freeze (28°F) on or before...
10% chanceNov 1
20% chanceNov 11
30% chanceNov 19
40% chanceNov 28
50% chanceDec 3
60% chanceDec 8
70% chanceDec 15
80% chanceDec 23
90% chanceJan 1
Probability of moderate hard freeze (24°F) on or before...
10% chanceNov 25
20% chanceDec 6
30% chanceDec 12
40% chanceDec 18
50% chanceDec 24
60% chanceDec 30
70% chanceJan 5
80% chanceJan 18
90% chanceFeb 1
Probability of hard freeze (20°F) on or before...
10% chanceDec 8
20% chanceDec 13
30% chanceDec 18
40% chanceDec 23
50% chanceDec 28
60% chanceJan 1
70% chanceJan 11
80% chanceJan 26
90% chanceFeb 7
Probability of severe hard freeze (16°F) on or before...
10% chanceDec 9
20% chanceDec 12
30% chanceDec 15
40% chanceDec 18
50% chanceDec 22
60% chanceDec 26
70% chanceDec 29
80% chanceJan 6
90% chanceFeb 7

Agricultural climatic data from weather station: LEABURG 1 SW (USC00354811)

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