Houston, AK 99695 Frost Dates
Frost dates for Houston, AK, ZIP 99695
Around 05/05 is the usual last spring frost, about 250 days away. The first fall frost typically arrives around 10/01, about 147 frost-free days later.
Houston 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
Zone 6b around Houston has about 5 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Houston's last frost
05/05 is the middle of 30 years of NOAA records, not a promise. Plant by 04/24 and you're betting against frost in roughly 9 years out of 10. 05/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Houston compares
Houston's growing season runs about 147 days, ranking 35,913 of 40,283 US ZIP codes measured here, longest to shortest. Within AK, it ranks 57 of 269.
Learn more
the frost range explains how to read the range around Houston's dates instead of trusting one, and local microclimates explains what one yard in Houston can differ from the 99695 normal.