Frost Dates for Preston, ID

Elevation: 1438 m

Frost Dates

Last Spring Frost (50%) May 16

First Fall Frost (50%) September 28

30% Probability

Last Spring Frost May 24

First Fall Frost September 23

Hard Freeze (28°F)

Last Spring Hard Freeze April 30

First Fall Hard Freeze October 10

42.09°N, 111.88°W © OpenStreetMap

Growing Season

135 Days May 16 to September 28

USDA Hardiness Zone

Zone 6a

Avg. annual minimum: −10 to −5°F

Learn more

Köppen Climate

Dfa Hot-Summer Continental

Hot summers and cold winters with year-round precipitation. Moderate growing season supports warm-season crops like tomatoes, peppers, and corn. Winter protection extends the harvest.

Köppen climate map

Temperature

10° 30° 50° 70° 90°

24°

Jan

28°

Feb

39°

Mar

46°

Apr

55°

May

63°

Jun

71°

Jul

70°

Aug

60°

Sep

48°

Oct

35°

Nov

25°

Dec

32°F

28°F

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
January	32°	24°	15°
February	38°	28°	18°
March	50°	39°	27°
April	59°	46°	33°
May	69°	55°	40°
June	79°	63°	47°
July	89°	71°	54°
August	87°	70°	52°
September	77°	60°	43°
October	63°	48°	33°
November	47°	35°	24°
December	34°	25°	17°

Precipitation

0" 2" 4" 4.1"

2.9"

Jan

2.5"

Feb

3.3"

Mar

3.2"

Apr

3.6"

May

3.5"

Jun

2.8"

Jul

3.0"

Aug

4.1"

Sep

3.9"

Oct

2.9"

Nov

3.0"

Dec

Precipitation table

Average monthly precipitation (inches)
Month	Precipitation
January	2.9
February	2.5
March	3.3
April	3.2
May	3.6
June	3.5
July	2.8
August	3.0
September	4.1
October	3.9
November	2.9
December	3.0

Sunrise / Sunset

Jan: 7:22 AM – 4:38 PM · 9h 15m

Feb: 6:49 AM – 5:11 PM · 10h 21m

Mar: 6:10 AM – 5:50 PM · 11h 40m

Apr: 5:26 AM – 6:34 PM · 13h 09m

May: 4:48 AM – 7:12 PM · 14h 23m

Jun: 4:28 AM – 7:32 PM · 15h 03m

Jul: 4:37 AM – 7:23 PM · 14h 47m

Aug: 5:09 AM – 6:51 PM · 13h 42m

Sep: 5:52 AM – 6:08 PM · 12h 16m

Oct: 6:35 AM – 5:25 PM · 10h 50m

Nov: 7:13 AM – 4:47 PM · 9h 34m

Dec: 7:32 AM – 4:28 PM · 8h 57m

Daylight Longest: 15h 05m · Shortest: 8h 55m

Sunrise and sunset table

Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month	Sunrise	Sunset	Daylight
January	7:22 AM	4:38 PM	9h 15m
February	6:49 AM	5:11 PM	10h 21m
March	6:10 AM	5:50 PM	11h 40m
April	5:26 AM	6:34 PM	13h 09m
May	4:48 AM	7:12 PM	14h 23m
June	4:28 AM	7:32 PM	15h 03m
July	4:37 AM	7:23 PM	14h 47m
August	5:09 AM	6:51 PM	13h 42m
September	5:52 AM	6:08 PM	12h 16m
October	6:35 AM	5:25 PM	10h 50m
November	7:13 AM	4:47 PM	9h 34m
December	7:32 AM	4:28 PM	8h 57m

Nearby Stations

Trenton, UTMay 17 - September 18 Richmond, UTMay 11 - October 5 Cutler Dam, UTMay 3 - October 12 Malad City, ID May 22 - September 20 Logan Cache AP, UT May 8 - October 2 Logan Utah St Univ, UT April 30 - October 16

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!