Frost Dates for Milton Freewater, OR 97862

Last spring frost May 10 · First fall frost September 25 · 138 frost-free days · USDA Zone 7a

Frost probability for 97862

Frost10%50%90%
Spring (last frost)May 26May 10April 24
Fall (first frost)September 12September 25October 8

Dates come from NOAA 1971–2000 freeze probabilities at the nearest reporting station (17.1 km away); the 50% date is the median year.

Month by month in Milton Freewater

MonthWhat to do
JanuaryPlan your garden layout and order seeds. Research varieties suited to your frost dates.
FebruaryStart the slowest-growing crops indoors: onions, leeks, and celery (10–12 weeks before last frost).
MarchStart peppers and eggplant indoors 8–10 weeks before your last frost (around May 10). Start tomatoes about two weeks later, 6–8 weeks before last frost.
AprilStart herbs, basil, and squash indoors (4–6 weeks before frost). Direct sow peas, spinach, and lettuce if soil is workable.
MayLast frost around May 10. Transplant cold-hardy crops (broccoli, kale, cabbage). Harden off tomato and pepper seedlings.
JuneFrost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini.
JulySuccession plant lettuce and greens. Keep beds weeded and watered consistently.
AugustFirst fall frost approaching (around September 25). Transplant fall brassicas. Sow spinach, arugula, and radishes.
SeptemberFirst frost around September 25. Harvest tomatoes and peppers before frost. Cover cold-hardy crops with row covers to extend the season.
OctoberHarvest remaining cold-hardy crops: kale, carrots, and beets. Plant garlic bulbs for next year.
NovemberClean up spent plants. Add compost to beds. Rest, review, and plan next year's garden.
DecemberClean up spent plants. Add compost to beds. Rest, review, and plan next year's garden.

What grows in a 138-day season

Frequently Asked Questions

What is the last frost date for Milton Freewater, OR (ZIP 97862)?

The median last spring frost date for Milton Freewater, OR (ZIP code 97862) is around May 10. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area.

What is the first fall frost date in Milton Freewater, OR?

The median first fall frost date for Milton Freewater, OR is around September 25. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses.

How long is the growing season in Milton Freewater, OR?

The frost-free growing season in Milton Freewater is about 138 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side.

What USDA hardiness zone is Milton Freewater, OR?

Based on frost date patterns, Milton Freewater falls approximately in 7a. USDA hardiness zones are determined by average annual minimum winter temperatures and guide both plant selection and planting timing for your location.

When should I start tomatoes indoors in Milton Freewater, OR?

Start tomato seeds indoors 6–8 weeks before your last frost date (around May 10). For Milton Freewater, that's roughly March 15 to March 29. Transplant outdoors 1–2 weeks after your last frost.

Nearby and related