Frost dates for Florence, AZ
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
January 30
typical year
Safe to plant
February 24
frost is over in 9 of 10 years
First fall frost
December 12
typical year
Growing season
319 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | Jan 2 – 16 | – |
| Spinach | – | Dec 19 – Jan 9 | Oct 17 – 31 |
| Lettuce | – | Jan 2 – 23 | Oct 17 – 31 |
| Radishes | – | Jan 2 – Feb 13 | Oct 31 – Nov 14 |
| Onions | – | Jan 2 – 16 | – |
| Potatoes | – | Jan 9 – 23 | – |
| Carrots | – | Jan 9 – 30 | Sep 19 – Oct 3 |
| Beets | – | Jan 2 – 16 | Oct 3 – 17 |
| Kale | Nov 21 – Dec 5 | Jan 2 – 16 | Oct 3 – 17 |
| Broccoli | Nov 21 – Dec 5 | Jan 16 – 30 | Oct 3 – 17 |
| Cabbage | Nov 7 – 21 | Jan 2 – 16 | Oct 3 – 17 |
| Garlic | – | – | Oct 31 – Nov 21 |
| Warm-season crops | |||
| Tomatoes | Dec 30 – Jan 13 | Feb 24 – Mar 10 | – |
| Peppers | Dec 23 – Jan 6 | Mar 3 – 17 | – |
| Cucumbers | – | Feb 24 – Mar 17 | – |
| Zucchini | – | Feb 24 – Mar 24 | – |
| Pumpkins | – | Feb 24 – Mar 17 | – |
| Green beans | – | Feb 24 – Oct 3 | – |
| Sweet corn | – | Feb 24 – Mar 24 | – |
| Basil | Jan 20 – Feb 3 | Mar 3 – 10 | – |
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | February 24 | January 30 | December 27 |
| Fall frost before | November 22 | December 12 | January 12 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around January 8 (February 11 in a late year), and the first one in fall around December 26.
Towns that use these dates
This is the nearest NOAA station with frost records for 1 town.
Florence
Where these dates come from
NOAA weather station FLORENCE, AZ US (USC00023027), 1991–2020 climate normals. It's the nearest station for 2 zip codes, all within 13 miles:
85132, 85191
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.