Frost Dates for Hyden, WA

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. September 6
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. June 5
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 September 18
First Fall Frost May 21

Hard Freeze (−2°C)

Last Spring Hard Freeze July 27
First Fall Hard Freeze June 16
-32.44°N, 118.90°W © OpenStreetMap

Growing Season

272 Days September 6 to June 5

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 9b

Avg. annual minimum: 25 to 30°F (−4 to −1°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

Köppen climate map

Temperature

0° 10° 20° 30°
25°
High: 34°C
Avg: 25°C
Low: 16°C
Jan
25°
High: 33°C
Avg: 25°C
Low: 16°C
Feb
22°
High: 30°C
Avg: 22°C
Low: 14°C
Mar
19°
High: 26°C
Avg: 19°C
Low: 11°C
Apr
15°
High: 21°C
Avg: 15°C
Low: 8°C
May
12°
High: 18°C
Avg: 12°C
Low: 5°C
Jun
11°
High: 17°C
Avg: 11°C
Low: 5°C
Jul
11°
High: 18°C
Avg: 11°C
Low: 5°C
Aug
13°
High: 21°C
Avg: 13°C
Low: 6°C
Sep
17°
High: 26°C
Avg: 17°C
Low: 9°C
Oct
21°
High: 29°C
Avg: 21°C
Low: 12°C
Nov
23°
High: 32°C
Avg: 23°C
Low: 14°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 20 mm 40 mm 60 mm
23 mm
22.9 mm
Jan
13 mm
12.7 mm
Feb
20 mm
20.3 mm
Mar
13 mm
12.7 mm
Apr
30 mm
30.5 mm
May
33 mm
33.0 mm
Jun
53 mm
53.3 mm
Jul
48 mm
48.3 mm
Aug
23 mm
22.9 mm
Sep
15 mm
15.2 mm
Oct
18 mm
17.8 mm
Nov
8 mm
7.6 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec14h13h12h11h10.5h10h10h11h12h13h13.5h14h
Jan: 5:03 AM – 6:57 PM · 13h 55m
Feb: 5:25 AM – 6:35 PM · 13h 09m
Mar: 5:53 AM – 6:07 PM · 12h 14m
Apr: 6:24 AM – 5:36 PM · 11h 12m
May: 6:50 AM – 5:10 PM · 10h 20m
Jun: 7:04 AM – 4:56 PM · 9h 53m
Jul: 6:58 AM – 5:02 PM · 10h 04m
Aug: 6:36 AM – 5:24 PM · 10h 48m
Sep: 6:06 AM – 5:54 PM · 11h 49m
Oct: 5:35 AM – 6:25 PM · 12h 49m
Nov: 5:09 AM – 6:51 PM · 13h 42m
Dec: 4:56 AM – 7:04 PM · 14h 07m
Daylight Longest: 14h 08m · Shortest: 9h 52m

Nearby Stations

Narembeen, WAAugust 23 - June 10 Newdegate Research Station, WA September 30 - June 4 Lake Grace, WAAugust 24 - June 19 Lake Grace Comparison, WA Corrigin, WASeptember 3 - June 11 Merredin, WAAugust 28 - June 8

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