Frost dates for Bellemont Wfo, 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
June 21
typical year
Safe to plant
July 4
frost is over in 9 of 10 years
First fall frost
September 17
typical year
Growing season
85 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 | – | May 24 – Jun 7 | – |
| Spinach | – | May 10 – 31 | Jul 23 – Aug 6 |
| Lettuce | – | May 24 – Jun 14 | Jul 23 – Aug 6 |
| Radishes | – | May 24 – Jul 5 | Aug 6 – 20 |
| Onions | – | May 24 – Jun 7 | – |
| Potatoes | Season usually too short. Try a quick variety or row covers. | ||
| Carrots | – | May 31 – Jun 21 | Jun 25 – Jul 9 |
| Beets | – | May 24 – Jun 7 | Jul 9 – 23 |
| Kale | Apr 12 – 26 | May 24 – Jun 7 | Jul 9 – 23 |
| Broccoli | Apr 12 – 26 | Jun 7 – 21 | Jul 9 – 23 |
| Cabbage | Mar 29 – Apr 12 | May 24 – Jun 7 | Jul 9 – 23 |
| Garlic | – | – | Aug 6 – 27 |
| Warm-season crops | |||
| Tomatoes | May 9 – 23 | Jul 4 – 18 | – |
| Peppers | Season usually too short. Try a quick variety or row covers. | ||
| Cucumbers | – | Jul 4 – 25 | – |
| Zucchini | – | Jul 4 – Aug 1 | – |
| Pumpkins | Season usually too short. Try a quick variety or row covers. | ||
| Green beans | – | Jul 4 – 9 | – |
| Sweet corn | Season usually too short. Try a quick variety or row covers. | ||
| Basil | May 30 – Jun 13 | Jul 11 – 18 | – |
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 | July 4 | June 21 | June 9 |
| Fall frost before | September 3 | September 17 | September 29 |
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 June 9 (June 22 in a late year), and the first one in fall around September 27.
Where these dates come from
NOAA weather station BELLEMONT WFO, AZ US (USC00020678), 1991–2020 climate normals. It's the nearest station for 2 zip codes, all within 8 miles:
86015, 86018
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.