Monument, OR 97848 Frost Dates
When can you plant in Monument, OR?
Around 05/04 is the usual last spring frost, about 249 days away. The first fall frost typically arrives around 10/06, about 155 frost-free days later.
The USDA Plant Hardiness Zone Map puts Monument in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 6 weeks of growing season left in Monument before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Monument's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 and you're betting against frost in roughly 9 years out of 10. 05/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Monument compares
Monument's growing season runs about 155 days, ranking 34,179 of 40,283 US ZIP codes measured here, longest to shortest. Within OR, it ranks 344 of 463.
Learn more
the frost range covers how to read the range around Monument's dates instead of trusting one. local microclimates covers what one yard in Monument can differ from the 97848 normal.