Frost Dates for Orofino, ID

Based on data from Dworshak Fish Hatchery weather station, 4 miles away

Elevation: 1030 ft

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. April 20
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 20
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 April 27
First Fall Frost October 12

Hard Freeze (28°F)

Last Spring Hard Freeze March 28
First Fall Hard Freeze November 2
46.48°N, -116.26°W © OpenStreetMap

Growing Season

183 Days April 20 to October 20

USDA Hardiness Zone iHardiness 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 7b

Avg. annual minimum: 5 to 10°F (−15 to −12°C)

Learn more

Köppen Climate iThe 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

20° 40° 60° 80°
34°
High: 40°F
Avg: 34°F
Low: 28°F
Jan
37°
High: 46°F
Avg: 37°F
Low: 29°F
Feb
44°
High: 55°F
Avg: 44°F
Low: 33°F
Mar
50°
High: 63°F
Avg: 50°F
Low: 38°F
Apr
58°
High: 72°F
Avg: 58°F
Low: 45°F
May
64°
High: 78°F
Avg: 64°F
Low: 51°F
Jun
72°
High: 90°F
Avg: 72°F
Low: 55°F
Jul
72°
High: 90°F
Avg: 72°F
Low: 54°F
Aug
64°
High: 80°F
Avg: 64°F
Low: 48°F
Sep
51°
High: 63°F
Avg: 51°F
Low: 39°F
Oct
40°
High: 48°F
Avg: 40°F
Low: 33°F
Nov
33°
High: 39°F
Avg: 33°F
Low: 28°F
Dec
32°F
28°F
Avg High Avg Temp Avg Low Light Frost (32°F) Hard Frost (28°F)

Precipitation

0" 2" 4" 4.0"
3.6"
3.56"
Jan
2.9"
2.94"
Feb
3.7"
3.68"
Mar
3.9"
3.86"
Apr
3.7"
3.72"
May
3.3"
3.31"
Jun
2.9"
2.86"
Jul
2.3"
2.34"
Aug
2.6"
2.63"
Sep
2.9"
2.93"
Oct
3.7"
3.70"
Nov
4.0"
4.03"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h15h15.5h15.5h14h12.5h10.5h9h8.5h
Jan: 7:32 AM – 4:18 PM · 8h 46m
Feb: 6:58 AM – 5:02 PM · 10h 05m
Mar: 7:07 AM – 6:43 PM · 11h 36m
Apr: 6:05 AM – 7:26 PM · 13h 21m
May: 5:17 AM – 8:06 PM · 14h 48m
Jun: 4:57 AM – 8:34 PM · 15h 36m
Jul: 5:13 AM – 8:29 PM · 15h 16m
Aug: 5:50 AM – 7:49 PM · 13h 60m
Sep: 6:30 AM – 6:49 PM · 12h 19m
Oct: 7:11 AM – 5:49 PM · 10h 38m
Nov: 6:56 AM – 4:05 PM · 9h 08m
Dec: 7:29 AM – 3:53 PM · 8h 24m
Daylight Pacific Time (PT) Longest: 15h 38m · Shortest: 8h 22m

Nearby Stations

Nezperce, IDMay 24 - September 20 Elk Rvr, IDMay 16 - September 23 Winchester, ID May 23 - September 25 Kamiah, IDApril 29 - October 5 Pierce, IDJune 3 - September 7 Headquarters, ID

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