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Frost dates for Newport Rose, RI

NOAA weather station USC00375215 at 15 ft elevation. Based on 11 years within 1991-2020. Last verified 2026-10-17.

Last spring freeze (32°F)

Apr 7

median: freeze still happened after this date in half of years

Apr 14 30% risk · Apr 21 10% risk

First fall freeze (32°F)

Nov 13

median: a freeze had happened by this date in half of years

Oct 31 10% chance of a freeze earlier than this

Freeze-free season

216 days

median length between last spring and first fall 32°F freeze

How to read these dates

Spring: a "10% risk" date means NOAA's 1991-2020 data put the chance of a 32°F or colder night after that date at 10%. The "30% risk" date is the convention used by some popular frost calculators (the Old Farmer's Almanac says it uses a 30% probability threshold, source). Fall: a "10%" date means a 10% chance the first freeze comes before it. Source: NOAA readme.

Full table for this station

ThresholdSpring: latest-freeze date at risk of 10% / 30% / 50%Fall: first-freeze date at chance of 10% / 50%
36°F (frost possible)May 6 / Apr 29 / Apr 23Oct 17 / Nov 1
32°F (freeze)Apr 21 / Apr 14 / Apr 7Oct 31 / Nov 13
28°F (hard freeze)Apr 8 / Apr 1 / Mar 28Nov 11 / Nov 25

Also at 32°F, last-freeze 70% date Apr 3 and 90% date Mar 28 (frost still likely after these early dates). Data quality: Representative: 10+ years of qualifying data, missing months filled from nearby stations. Source: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00375215, read 2026-10-17.

Is Memorial Day safe here?

Many New England gardeners wait for Memorial Day (it falls between May 25 and May 31). At this station, NOAA's chance of a 32°F or colder night after May 25 is under 10%, and after May 31 is under 10%. Your own spot may differ. See all stations.

Your planting schedule

Pick how cautious you want to be. The dates apply UNH Extension's per-crop rules (UNH fact sheet, read 2026-10-17) to this station's last-freeze date. UNH's sheet does not say which probability its "last frost" means, so you choose. These are planning dates, not instructions; follow your seed packet and the weather.

Last-frost reference date

Showing the schedule for the 2027 season (dates repeat yearly). Table below defaults to Typical; it updates when you choose.

CropStart seeds indoorsOutdoorsUNH Extension rule used
SpinachJan 20 – Feb 24Set out Mar 3 – Mar 24Start 4-6 wk before set-out; set out 3-6 wk before last frost.
BroccoliFeb 3 – Mar 3Set out Mar 17 – Mar 31Start 4-6 wk before set-out; set out 2-4 wk before last frost.
Brussels sproutFeb 3 – Mar 3Set out Mar 17 – Mar 31Start 4-6 wk before set-out; set out 2-4 wk before last frost.
CabbageFeb 3 – Feb 17Set out Mar 17Start 4-6 wk before set-out; set out 4 wk before last frost.
KaleFeb 3 – Feb 17Set out Mar 17Start 4-6 wk before set-out; set out 4 wk before last frost.
KohlrabiFeb 3 – Feb 17Set out Mar 17Start 4-6 wk before set-out; set out 4 wk before last frost.
LeekJan 6 – Jan 20Set out Mar 17Start 8-10 wk before set-out; set out 4 wk before last frost.
LettuceFeb 10 – Feb 24Set out Mar 17 – Mar 24Start 4-5 wk before set-out; set out 3-4 wk before last frost.
OnionJan 6 – Jan 20Set out Mar 17Start 8-10 wk before set-out; set out 4 wk before last frost.
Radish—Sow Mar 17 – Mar 31Sow seed in garden 2-4 wk before last frost.
Turnip—Sow Mar 17 – Mar 31Sow seed in garden 2-4 wk before last frost.
ParsleyJan 13 – Jan 27Set out Mar 24 – Mar 31Start 9-10 wk before set-out; set out 2-3 wk before last frost.
CauliflowerFeb 17 – Mar 3Set out Mar 31Start 4-6 wk before set-out; set out 2 wk before last frost.
Potato—Sow Mar 31 – Apr 7Plant seed potatoes 1-2 wk before last frost.
Swiss chardFeb 17 – Mar 3Set out Mar 31; or sow Mar 17Start 4-6 wk before set-out; set out 2 wk before last frost; or sow seed 4 wk before last frost.
Bean—Sow on/after Apr 14Sow seed in garden after last frost.
CeleryJan 20 – Feb 3Set out on/after Apr 14Start 10-12 wk before set-out; set out after last frost.
Parsnip—Sow on/after Apr 14Sow seed in garden after last frost.
CucumberMar 24 – Apr 7Set out Apr 21 – Apr 28
Direct sow when soil reaches 70°F		Start 3-4 wk before set-out; set out 1-2 wk after last frost; or sow when soil warms to 70°F.
Sweet potato—Plant slips Apr 21 – Apr 28Plant slips (young plants) 1-2 wk after last frost.
TomatoFeb 24 – Mar 17Set out Apr 21 – Apr 28Start 6-8 wk before set-out; set out 1-2 wk after last frost.
BasilMar 3 – Mar 17Set out Apr 28Start 6-8 wk before set-out; set out 2 wk after last frost.
EggplantFeb 17 – Mar 10Set out Apr 28 – May 5Start 8-10 wk before set-out; set out 2-3 wk after last frost.
MelonMar 31 – Apr 7Set out Apr 28Start 3-4 wk before set-out; set out 2 wk after last frost.
PepperFeb 17 – Mar 3Set out Apr 28Start 8-10 wk before set-out; set out 2 wk after last frost.
PumpkinMar 31 – Apr 7Set out Apr 28
Direct sow when soil reaches 70°F		Start 3-4 wk before set-out; set out 2 wk after last frost; or sow when soil warms to 70°F.
Summer squashMar 31 – Apr 7Set out Apr 28
Direct sow when soil reaches 70°F		Start 3-4 wk before set-out; set out 2 wk after last frost; or sow when soil warms to 70°F.
Winter squashMar 31 – Apr 7Set out Apr 28
Direct sow when soil reaches 70°F		Start 3-4 wk before set-out; set out 2 wk after last frost; or sow when soil warms to 70°F.
ZucchiniMar 31 – Apr 7Set out Apr 28
Direct sow when soil reaches 70°F		Start 3-4 wk before set-out; set out 2 wk after last frost; or sow when soil warms to 70°F.
Rutabaga—Sow Jun 15 – Jul 15Sow seed in garden mid-June to mid-July (fixed dates, not tied to frost).
Beet—Sow when soil reaches 45°F (use a soil thermometer)Sow seed in garden when soil warms to 45°F.
Carrot—Sow when soil reaches 60°F (use a soil thermometer)Sow seed in garden when soil warms to 60°F.
Corn—Sow when soil reaches 60°F (use a soil thermometer)Sow seed in garden when soil warms to 60°F.
Pea—Sow as soon as soil thawsSow seed in garden as soon as soil thaws.

Fall: when the garden ends

At this station the median first 32°F freeze is Nov 13; there is a 10% chance of one before Oct 31. Tender crops (tomatoes, peppers, basil) can be damaged at 33-36°F (Almanac.com notes some plants are damaged in that range); the 36°F first-frost date here is median Nov 1 and 10% date Oct 17. UNH Extension notes many fall vegetables tolerate mild frosts down to about 28°F (median first 28°F here: Nov 25), and that row covers can extend the season. UNH: Fall vegetable gardening, read 2026-10-17.

Your garden is not the weather station

This station sits at 15 ft. UNH Extension says first-freeze dates vary "even between relatively close locations, based on factors such as elevation" (source), and notes that gardeners who keep garden journals can use their own records. Gardeners on Reddit describe the same thing: elevation and cold spots change when they can plant (for example r/vermont). Treat these dates as a starting point.

Nearby stations