Frost dates for Beaver Dam, 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
March 7
typical year
Safe to plant
April 10
frost is over in 9 of 10 years
First fall frost
November 19
typical year
Growing season
251 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 | – | Feb 7 – 21 | – |
| Spinach | – | Jan 24 – Feb 14 | Sep 24 – Oct 8 |
| Lettuce | – | Feb 7 – 28 | Sep 24 – Oct 8 |
| Radishes | – | Feb 7 – Mar 21 | Oct 8 – 22 |
| Onions | – | Feb 7 – 21 | – |
| Potatoes | – | Feb 14 – 28 | – |
| Carrots | – | Feb 14 – Mar 7 | Aug 27 – Sep 10 |
| Beets | – | Feb 7 – 21 | Sep 10 – 24 |
| Kale | Dec 27 – Jan 10 | Feb 7 – 21 | Sep 10 – 24 |
| Broccoli | Dec 27 – Jan 10 | Feb 21 – Mar 7 | Sep 10 – 24 |
| Cabbage | Dec 13 – 27 | Feb 7 – 21 | Sep 10 – 24 |
| Garlic | – | – | Oct 8 – 29 |
| Warm-season crops | |||
| Tomatoes | Feb 13 – 27 | Apr 10 – 24 | – |
| Peppers | Feb 6 – 20 | Apr 17 – May 1 | – |
| Cucumbers | – | Apr 10 – May 1 | – |
| Zucchini | – | Apr 10 – May 8 | – |
| Pumpkins | – | Apr 10 – May 1 | – |
| Green beans | – | Apr 10 – Sep 10 | – |
| Sweet corn | – | Apr 10 – May 8 | – |
| Basil | Mar 6 – 20 | Apr 17 – 24 | – |
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 | April 10 | March 7 | February 16 |
| Fall frost before | November 1 | November 19 | December 5 |
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 February 20 (March 11 in a late year), and the first one in fall around December 1.
Where these dates come from
NOAA weather station BEAVER DAM, AZ US (USC00020672), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 14 miles:
86432
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.