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🍂 First Frost Dates for Medford, Oregon 97501

The first 36°F frost date is 30% likely to be on Sep 19. (See detailed probabilities below.)

The first 32°F light freeze date is 30% likely to be on Oct 3. (See detailed probabilities below.)

(See also 🌷 Last Spring Frost Dates.)

First frost date probabilities for Medford, 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 11
20% chanceSep 15
30% chanceSep 19
40% chanceSep 22
50% chanceSep 25
60% chanceSep 28
70% chanceOct 1
80% chanceOct 4
90% chanceOct 9
Probability of light freeze (32°F) on or before...
10% chanceSep 24
20% chanceSep 30
30% chanceOct 3
40% chanceOct 5
50% chanceOct 9
60% chanceOct 12
70% chanceOct 16
80% chanceOct 20
90% chanceOct 26
Probability of moderate freeze (28°F) on or before...
10% chanceOct 7
20% chanceOct 14
30% chanceOct 19
40% chanceOct 24
50% chanceOct 28
60% chanceNov 1
70% chanceNov 4
80% chanceNov 10
90% chanceNov 23
Probability of moderate hard freeze (24°F) on or before...
10% chanceOct 25
20% chanceNov 1
30% chanceNov 5
40% chanceNov 11
50% chanceNov 18
60% chanceNov 26
70% chanceDec 3
80% chanceDec 11
90% chanceDec 25
Probability of hard freeze (20°F) on or before...
10% chanceNov 6
20% chanceNov 18
30% chanceNov 28
40% chanceDec 5
50% chanceDec 12
60% chanceDec 20
70% chanceDec 29
80% chanceJan 6
90% chanceJan 24
Probability of severe hard freeze (16°F) on or before...
10% chanceNov 20
20% chanceDec 3
30% chanceDec 11
40% chanceDec 17
50% chanceDec 25
60% chanceDec 31
70% chanceJan 7
80% chanceJan 22
90% chanceFeb 2

Agricultural climatic data from weather station: MEDFORD EXP STN (USC00355424)

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