Roosevelt, AZ frost dates
Frost is light and occasional here — typically a few cold nights around midwinter (about 9 a year). Cover tender plants when frost is forecast.
How Roosevelt compares
- In a typical year, frost nights in Roosevelt fall between December 25 and January 17. In 1 year in 10 the first frost comes as early as December 5, or the last frost as late as February 18.
- Compared with San Tan Valley, AZ, 71 km away, the last frost here is 15 days earlier than there.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 21 |
| 50% (median) | January 17 |
| 10% (safe for tender plants) | February 18 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | December 5 |
| 50% (median) | December 25 |
| 90% (late) | January 27 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Gardening where frost is rare
Roosevelt, AZ only freezes on a few winter nights, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
About these dates
Based on 1991–2020 NOAA climate normals for the Roosevelt 1 S, AZ weather station, 12 km away (elevation 2,605 ft (794 m)).
Frost dates near Roosevelt
- Miami Feb 24 · Dec 1
- Claypool Mar 11 · Nov 21
- Globe Mar 11 · Nov 21
- Tonto Basin Mar 7 · Nov 20
- Tortilla Flat Jan 29 · Dec 24
- Superior Jan 18 · Dec 28
- Gold Canyon Feb 11 · Dec 10
- Young May 6 · Oct 20
- Apache Junction Feb 11 · Dec 10
- San Carlos Mar 13 · Nov 19
Frequently asked questions
When is the last frost in Roosevelt, AZ?
The median last spring frost in Roosevelt, AZ is January 17. There is still about a 10% chance of frost after February 18, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Roosevelt, AZ?
The median first fall frost is December 25, with about a 10% chance of frost before December 5.
How long is the growing season in Roosevelt, AZ?
About 342 days between the median last spring frost and first fall frost.
What planting zone is Roosevelt, AZ?
Roosevelt, AZ is in USDA hardiness zone 9b.