Frost Dates for Arco 17 Sw, ID

Elevation: 1804 m

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 24
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 1

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 June 2
First Fall Frost September 25

Hard Freeze (28°F)

Last Spring Hard Freeze May 3
First Fall Hard Freeze October 13
43.46°N, 113.56°W © OpenStreetMap

Growing Season

130 Days May 24 to October 1

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 6a

Avg. annual minimum: −10 to −5°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dsb Warm-Summer Continental (Dry Summer)

Warm, dry summers and cold, snowy winters. Common in mountain regions. Moderate growing season with irrigation needs in summer.

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
January27°20°13°
February30°22°15°
March40°32°23°
April51°41°31°
May62°51°40°
June72°59°46°
July83°70°56°
August82°68°54°
September71°58°45°
October56°45°34°
November39°31°22°
December27°20°14°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January2.6
February2.4
March2.3
April1.9
May1.9
June1.9
July0.6
August1.6
September3.0
October3.0
November1.9
December2.2

Sunrise / Sunset

Daylight Longest: 15h 14m · Shortest: 8h 46m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:27 AM4:33 PM9h 07m
February6:52 AM5:08 PM10h 17m
March6:11 AM5:49 PM11h 39m
April5:24 AM6:36 PM13h 12m
May4:45 AM7:15 PM14h 31m
June4:24 AM7:36 PM15h 13m
July4:32 AM7:28 PM14h 56m
August5:06 AM6:54 PM13h 48m
September5:52 AM6:08 PM12h 17m
October6:37 AM5:23 PM10h 46m
November7:17 AM4:43 PM9h 26m
December7:37 AM4:23 PM8h 47m

Nearby Stations

Craters Of The Moon, ID June 19 - September 9 Arco, IDMay 22 - September 22 Picabo, IDJune 16 - September 9 Idaho Falls 46 W, ID June 11 - September 6 Mackay Lost Rvr Rs, ID June 1 - September 20 Bellevue, IDMay 13 - October 2

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview