Tensed, ID 83870 Frost Dates
When can you plant in Tensed, ID?
The last spring frost here typically falls around 05/15, about 260 days from today. The first fall frost typically arrives around 09/21, about 126 frost-free days later.
Tensed sits in USDA Zone 6b (-5 to 0°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 3 weeks of growing season left in Tensed before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 05/15 isn't a guarantee
05/15 is the middle of 30 years of NOAA records, not a promise. Plant by 04/30 and you're betting against frost in roughly 9 years out of 10. 06/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Tensed compares
Tensed's growing season runs about 126 days, ranking 38,735 of 40,283 US ZIP codes measured here, longest to shortest. Within ID, it ranks 197 of 320.
Learn more
zone vs. frost date covers why Zone 6b and Tensed's frost date answer different questions. the frost range covers how to read the range around Tensed's dates instead of trusting one.