FrostDateCheck

Melba, ID 83641 Frost Dates

When can you plant in Melba, ID?

Zone 7a

The last spring frost here typically falls around 04/12, about 227 days from today. The first fall frost typically arrives around 10/26, about 193 frost-free days later.

Melba sits in USDA Zone 7a (0 to 5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.

What to do before the first frost

About 8 weeks of growing season left in Melba before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.

The actual range around Melba's last frost

04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 03/23 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.

How Melba compares

Melba's growing season runs about 193 days, ranking 20,030 of 40,283 US ZIP codes measured here, longest to shortest. Within ID, it ranks 3 of 320.

Learn more

zone vs. frost date covers why Zone 7a and Melba's frost date answer different questions. the frost range covers how to read the range around Melba's dates instead of trusting one.