Frost Dates for South Kingstown, RI

Based on data from Kingston 1 W weather station, 2 miles away

Elevation: 197 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 1
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 12

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost May 8
First Fall Frost October 7

Hard Freeze (28°F)

Last Spring Hard Freeze April 18
First Fall Hard Freeze October 25
41.45°N, 71.52°W © OpenStreetMap

Growing Season

164 Days May 1 to October 12

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 6b

Avg. annual minimum: −5 to 0°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Cfa Humid Subtropical

Hot, humid summers and mild winters with rain year-round. Long growing seasons support a wide variety of vegetables, fruits, and ornamentals. The most common climate in the eastern US.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January37°28°19°
February39°30°21°
March46°37°27°
April56°46°36°
May66°56°45°
June75°65°54°
July80°70°60°
August79°69°59°
September73°62°52°
October62°52°41°
November52°42°32°
December43°34°25°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January5.6
February5.5
March5.6
April5.2
May4.5
June4.4
July4.1
August4.9
September5.4
October5.8
November6.5
December6.8

Sunrise / Sunset

Daylight Eastern Time (ET) Longest: 15h 00m · Shortest: 8h 60m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Eastern Time (ET))
Month Sunrise Sunset Daylight
January7:16 AM4:35 PM9h 19m
February6:49 AM5:13 PM10h 24m
March7:06 AM6:46 PM11h 40m
April6:13 AM7:20 PM13h 07m
May5:32 AM7:52 PM14h 20m
June5:17 AM8:16 PM14h 59m
July5:30 AM8:13 PM14h 43m
August6:00 AM7:40 PM13h 40m
September6:33 AM6:49 PM12h 16m
October7:06 AM5:57 PM10h 51m
November6:43 AM4:20 PM9h 37m
December7:12 AM4:12 PM9h 01m

Nearby Stations

Kingston, RIMay 3 - October 8 Kingston 1 Nw, RI April 27 - October 15 Newport Rose, RI April 7 - November 13 Coventry 2, RI April 22 - October 20 Newport State AP, RI April 11 - November 4 Westerly State AP, RI April 11 - October 31

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