Last spring frost
Apr 26
Frost Dates for Nolic, AZ
First fall frost
Nov 4
Growing season
195 days
Hardiness zone
9a
In an average year around Nolic, AZ, the last spring frost (32°F) is about Apr 26 and the first fall frost is about Nov 4, giving roughly a 195-day growing season. To be safe most years, wait until Apr 1 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | May 29 | May 7 | Apr 18 |
| Freeze (32°F) | May 17 | Apr 26 | Apr 1 |
| Hard (28°F) | May 5 | Apr 7 | Mar 8 |
| Severe (24°F) | Apr 23 | Mar 17 | Feb 10 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 29 | May 20 | May 16 | May 12 | May 7 | May 4 | Apr 30 | Apr 26 | Apr 18 |
| 32°F | May 17 | May 9 | May 4 | Apr 30 | Apr 26 | Apr 21 | Apr 15 | Apr 9 | Apr 1 |
| 28°F | May 5 | Apr 27 | Apr 21 | Apr 14 | Apr 7 | Apr 1 | Mar 28 | Mar 21 | Mar 8 |
| 24°F | Apr 23 | Apr 9 | Mar 31 | Mar 25 | Mar 17 | Mar 9 | Mar 2 | Feb 22 | Feb 10 |
| 20°F | Mar 31 | Mar 14 | Mar 3 | Feb 25 | Feb 17 | Feb 7 | Jan 29 | Jan 17 | Jan 3 |
| 16°F | Feb 27 | Feb 16 | Feb 7 | Jan 31 | Jan 23 | Jan 14 | Jan 7 | Dec 31 | Dec 18 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Oct 10 | Oct 26 | Nov 13 |
| Freeze (32°F) | Oct 18 | Nov 4 | Nov 24 |
| Hard (28°F) | Oct 27 | Nov 17 | Dec 8 |
| Severe (24°F) | Nov 9 | Dec 3 | Dec 25 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 10 | Oct 16 | Oct 20 | Oct 23 | Oct 26 | Oct 30 | Nov 3 | Nov 7 | Nov 13 |
| 32°F | Oct 18 | Oct 24 | Oct 28 | Nov 1 | Nov 4 | Nov 8 | Nov 13 | Nov 17 | Nov 24 |
| 28°F | Oct 27 | Nov 3 | Nov 7 | Nov 13 | Nov 17 | Nov 22 | Nov 27 | Dec 2 | Dec 8 |
| 24°F | Nov 9 | Nov 17 | Nov 24 | Nov 29 | Dec 3 | Dec 7 | Dec 12 | Dec 17 | Dec 25 |
| 20°F | Nov 23 | Dec 1 | Dec 8 | Dec 13 | Dec 18 | Dec 24 | Dec 31 | Jan 8 | Jan 29 |
| 16°F | Dec 3 | Dec 12 | Dec 19 | Dec 28 | Jan 2 | Jan 8 | Jan 16 | Jan 30 | Feb 10 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Kitt Peak, Az, about 25.1 miles away@if(!empty($station['elevation_ft'])), at 6,790 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Nolic, AZ?
On average, the last spring frost (32°F) around Nolic, AZ is about Apr 26. In cooler years it can run later, so for a safer bet many gardeners wait until Apr 1.
When is the first frost in the fall?
The first fall frost around Nolic, AZ typically arrives about Nov 4. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Apr 26 on average, or Apr 1 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 195 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 85634 Planting calendar → Arizona frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026