Frost Dates for Norseman Aero, 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 18
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 3
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 29
First Fall Frost May 26

Hard Freeze (−2°C)

Last Spring Hard Freeze August 18
First Fall Hard Freeze June 16
-32.21°N, 121.75°W © OpenStreetMap

Growing Season

258 Days September 18 to June 3

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°
24°
High: 33°C
Avg: 24°C
Low: 16°C
Jan
24°
High: 32°C
Avg: 24°C
Low: 16°C
Feb
21°
High: 29°C
Avg: 21°C
Low: 14°C
Mar
18°
High: 25°C
Avg: 18°C
Low: 11°C
Apr
14°
High: 21°C
Avg: 14°C
Low: 7°C
May
11°
High: 18°C
Avg: 11°C
Low: 5°C
Jun
11°
High: 17°C
Avg: 11°C
Low: 4°C
Jul
12°
High: 19°C
Avg: 12°C
Low: 5°C
Aug
14°
High: 23°C
Avg: 14°C
Low: 6°C
Sep
18°
High: 26°C
Avg: 18°C
Low: 10°C
Oct
21°
High: 29°C
Avg: 21°C
Low: 12°C
Nov
23°
High: 31°C
Avg: 23°C
Low: 14°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 10 mm 20 mm 30 mm 40 mm
33 mm
33.0 mm
Jan
20 mm
20.3 mm
Feb
18 mm
17.8 mm
Mar
13 mm
12.7 mm
Apr
3 mm
2.5 mm
May
8 mm
7.6 mm
Jun
13 mm
12.7 mm
Jul
13 mm
12.7 mm
Aug
13 mm
12.7 mm
Sep
13 mm
12.7 mm
Oct
20 mm
20.3 mm
Nov
10 mm
10.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec14h13h12h11h10.5h10h10h11h12h13h13.5h14h
Jan: 5:03 AM – 6:57 PM · 13h 54m
Feb: 5:26 AM – 6:34 PM · 13h 08m
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 21m
Jun: 7:03 AM – 4:57 PM · 9h 54m
Jul: 6:58 AM – 5:02 PM · 10h 05m
Aug: 6:36 AM – 5:24 PM · 10h 49m
Sep: 6:06 AM – 5:54 PM · 11h 49m
Oct: 5:36 AM – 6:24 PM · 12h 49m
Nov: 5:09 AM – 6:51 PM · 13h 41m
Dec: 4:57 AM – 7:03 PM · 14h 06m
Daylight Longest: 14h 07m · Shortest: 9h 53m

Nearby Stations

Salmon Gums Res.Stn., WA October 12 - May 26 Esperance Aero, WA Esperance, WA Ravensthorpe, WA Hopetoun North, WA

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