Frost Dates for Adelanto, CA

In Adelanto, CA, the average last spring frost is around Mar 18 and the average first fall frost around Nov 11, for a growing season of about 233 days. For frost-tender plants, wait until Apr 12, when the chance of frost drops to 10%.

Average last frostMar 1850% chance of frost after this date
Safe to plantApr 12only a 10% chance of frost after
Average first frostNov 1150% chance of frost before this date
Growing season233 daysfrost-free in an average year

Based on NOAA 1991–2020 records from the Victorville, CA weather station, 9 miles away, elevation 2,880 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 12Oct 27
20%Apr 5Nov 1
30%Mar 31Nov 5
40%Mar 25Nov 8
50%Mar 18Nov 11
60%Mar 13Nov 13
70%Mar 7Nov 17
80%Mar 2Nov 20
90%Feb 23Nov 26

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 11Nov 1
Frost / freeze (32°F)Mar 18Nov 11
Hard freeze (28°F)Feb 22Nov 24

Planting calendar for Adelanto

Start indoors Plant outside Fall planting
JanFebMarAprMayJunJulAugSepOctNovDec
Tomatoes
Indoors Jan 21 – Feb 4
Transplant Mar 25 – Apr 8
Peppers
Indoors Jan 7 – Jan 21
Transplant Apr 1 – Apr 15
Eggplant
Indoors Jan 7 – Jan 21
Transplant Apr 1 – Apr 15
Basil
Indoors Feb 4 – Feb 18
Transplant Mar 25 – Apr 8
Cucumbers
Indoors Feb 18 – Feb 25
Sow or transplant Mar 25 – Apr 8
Zucchini and summer squash
Indoors Feb 18 – Feb 25
Sow or transplant Mar 25 – Apr 8
Pumpkins and winter squash
Sow Mar 25 – Apr 8
Watermelons and melons
Indoors Feb 18 – Feb 25
Sow or transplant Apr 1 – Apr 15
Green beans
Sow Mar 25 – Apr 8
Sweet corn
Sow Mar 25 – Apr 8
Lettuce
Indoors Feb 4 – Feb 18
Sow or transplant Feb 18 – Mar 4
Fall sowing Sep 16 – Oct 14
Spinach
Sow Feb 4 – Feb 25
Fall sowing Sep 16 – Oct 7
Peas
Sow Feb 4 – Feb 18
Fall sowing Sep 2 – Sep 16
Kale
Indoors Jan 21 – Feb 4
Sow or transplant Feb 18 – Mar 4
Fall sowing Sep 2 – Sep 30
Broccoli
Indoors Jan 21 – Feb 4
Transplant Mar 4 – Mar 18
Fall sowing Aug 19 – Sep 2
Cabbage
Indoors Jan 21 – Feb 4
Transplant Feb 25 – Mar 11
Fall sowing Aug 19 – Sep 2
Carrots
Sow Feb 25 – Mar 18
Fall sowing Aug 19 – Sep 2
Radishes
Sow Feb 11 – Mar 4
Fall sowing Sep 30 – Oct 21
Beets
Sow Feb 25 – Mar 18
Fall sowing Sep 2 – Sep 16
Onions (sets or transplants)
Indoors Dec 24 – Jan 7
Plant Feb 18 – Mar 4
Potatoes
Plant Feb 25 – Mar 11
Garlic
Plant Nov 11 – Dec 9

Based on the average last frost (Mar 18) and first frost (Nov 11). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.

Nearby cities

VictorvilleApple ValleyHesperiaSan BernardinoRancho CucamongaRialtoFontanaUplandAll California towns