Last spring frost
Jun 3
Frost Dates for Grand Canyon Village, AZ
First fall frost
Sep 27
Growing season
113 days
Hardiness zone
6b
In an average year around Grand Canyon Village, AZ, the last spring frost (32°F) is about Jun 3 and the first fall frost is about Sep 27, giving roughly a 113-day growing season. To be safe most years, wait until May 16 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) | Jun 30 | Jun 16 | Jun 2 |
| Freeze (32°F) | Jun 19 | Jun 3 | May 16 |
| Hard (28°F) | Jun 5 | May 19 | Apr 30 |
| Severe (24°F) | May 23 | May 1 | Apr 16 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Jun 30 | Jun 26 | Jun 22 | Jun 19 | Jun 16 | Jun 12 | Jun 9 | Jun 6 | Jun 2 |
| 32°F | Jun 19 | Jun 14 | Jun 10 | Jun 6 | Jun 3 | May 31 | May 29 | May 24 | May 16 |
| 28°F | Jun 5 | Jun 1 | May 28 | May 24 | May 19 | May 14 | May 10 | May 5 | Apr 30 |
| 24°F | May 23 | May 14 | May 8 | May 4 | May 1 | Apr 28 | Apr 25 | Apr 21 | Apr 16 |
| 20°F | May 8 | May 1 | Apr 26 | Apr 21 | Apr 18 | Apr 14 | Apr 10 | Apr 6 | Apr 1 |
| 16°F | Apr 22 | Apr 15 | Apr 9 | Apr 6 | Apr 2 | Mar 30 | Mar 25 | Mar 20 | Mar 12 |
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) | Aug 28 | Sep 15 | Sep 26 |
| Freeze (32°F) | Sep 12 | Sep 27 | Oct 10 |
| Hard (28°F) | Sep 24 | Oct 6 | Oct 23 |
| Severe (24°F) | Oct 4 | Oct 21 | Nov 5 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Aug 28 | Sep 4 | Sep 8 | Sep 12 | Sep 15 | Sep 17 | Sep 20 | Sep 23 | Sep 26 |
| 32°F | Sep 12 | Sep 17 | Sep 21 | Sep 24 | Sep 27 | Sep 30 | Oct 2 | Oct 5 | Oct 10 |
| 28°F | Sep 24 | Sep 29 | Oct 2 | Oct 4 | Oct 6 | Oct 9 | Oct 13 | Oct 18 | Oct 23 |
| 24°F | Oct 4 | Oct 8 | Oct 13 | Oct 17 | Oct 21 | Oct 24 | Oct 27 | Oct 31 | Nov 5 |
| 20°F | Oct 18 | Oct 23 | Oct 27 | Oct 31 | Nov 3 | Nov 6 | Nov 10 | Nov 14 | Nov 18 |
| 16°F | Oct 27 | Nov 1 | Nov 5 | Nov 9 | Nov 13 | Nov 16 | Nov 19 | Nov 23 | Nov 28 |
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: Bright Angel Rs, Az, about 6.7 miles away@if(!empty($station['elevation_ft'])), at 8,000 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 Grand Canyon Village, AZ?
On average, the last spring frost (32°F) around Grand Canyon Village, AZ is about Jun 3. In cooler years it can run later, so for a safer bet many gardeners wait until May 16.
When is the first frost in the fall?
The first fall frost around Grand Canyon Village, AZ typically arrives about Sep 27. 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 Jun 3 on average, or May 16 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 113 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 86052 Planting calendar → Arizona frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026