Frost Dates for Palmdale, CA

In Palmdale, CA, the average last spring frost is around Mar 10 and the average first fall frost around Nov 19, for a growing season of about 248 days. For frost-tender plants, wait until Apr 11, when the chance of frost drops to 10%.

Average last frostMar 1050% chance of frost after this date
Safe to plantApr 11only a 10% chance of frost after
Average first frostNov 1950% chance of frost before this date
Growing season248 daysfrost-free in an average year

Based on NOAA 1991–2020 records from the Palmdale, CA weather station, under 1 mile away, elevation 2,612 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.

Frost probability by date

Chance of a 32°F frost after the spring date, or before the fall date.

ChanceLast spring frostFirst fall frost
10%Apr 11Nov 3
20%Apr 2Nov 8
30%Mar 27Nov 12
40%Mar 18Nov 16
50%Mar 10Nov 19
60%Mar 5Nov 22
70%Feb 28Nov 25
80%Feb 22Nov 30
90%Feb 12Dec 4

Light frost vs. hard freeze

Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.

TemperatureLast in springFirst in fall
Light frost (36°F)Apr 5Nov 7
Frost / freeze (32°F)Mar 10Nov 19
Hard freeze (28°F)Feb 13Dec 1

Planting calendar for Palmdale

Start indoors Plant outside Fall planting
JanFebMarAprMayJunJulAugSepOctNovDec
Tomatoes
Indoors Jan 13 – Jan 27
Transplant Mar 17 – Mar 31
Peppers
Indoors Dec 30 – Jan 13
Transplant Mar 24 – Apr 7
Eggplant
Indoors Dec 30 – Jan 13
Transplant Mar 24 – Apr 7
Basil
Indoors Jan 27 – Feb 10
Transplant Mar 17 – Mar 31
Cucumbers
Indoors Feb 10 – Feb 17
Sow or transplant Mar 17 – Mar 31
Zucchini and summer squash
Indoors Feb 10 – Feb 17
Sow or transplant Mar 17 – Mar 31
Pumpkins and winter squash
Sow Mar 17 – Mar 31
Watermelons and melons
Indoors Feb 10 – Feb 17
Sow or transplant Mar 24 – Apr 7
Green beans
Sow Mar 17 – Mar 31
Sweet corn
Sow Mar 17 – Mar 31
Lettuce
Indoors Jan 27 – Feb 10
Sow or transplant Feb 10 – Feb 24
Fall sowing Sep 24 – Oct 22
Spinach
Sow Jan 27 – Feb 17
Fall sowing Sep 24 – Oct 15
Peas
Sow Jan 27 – Feb 10
Fall sowing Sep 10 – Sep 24
Kale
Indoors Jan 13 – Jan 27
Sow or transplant Feb 10 – Feb 24
Fall sowing Sep 10 – Oct 8
Broccoli
Indoors Jan 13 – Jan 27
Transplant Feb 24 – Mar 10
Fall sowing Aug 27 – Sep 10
Cabbage
Indoors Jan 13 – Jan 27
Transplant Feb 17 – Mar 3
Fall sowing Aug 27 – Sep 10
Carrots
Sow Feb 17 – Mar 10
Fall sowing Aug 27 – Sep 10
Radishes
Sow Feb 3 – Feb 24
Fall sowing Oct 8 – Oct 29
Beets
Sow Feb 17 – Mar 10
Fall sowing Sep 10 – Sep 24
Onions (sets or transplants)
Indoors Dec 16 – Dec 30
Plant Feb 10 – Feb 24
Potatoes
Plant Feb 17 – Mar 3
Garlic
Plant Nov 19 – Dec 17

Based on the average last frost (Mar 10) and first frost (Nov 19). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.

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