Last spring frost
Apr 11
Frost Dates for Red Mesa, AZ
First fall frost
Nov 1
Growing season
200 days
Hardiness zone
7a
In an average year around Red Mesa, AZ, the last spring frost (32°F) is about Apr 11 and the first fall frost is about Nov 1, giving roughly a 200-day growing season. To be safe most years, wait until Mar 24 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 17 | Apr 27 | Apr 10 |
| Freeze (32°F) | May 2 | Apr 11 | Mar 24 |
| Hard (28°F) | Apr 13 | Mar 26 | Mar 4 |
| Severe (24°F) | Mar 31 | Mar 6 | Feb 14 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 17 | May 10 | May 4 | May 1 | Apr 27 | Apr 24 | Apr 20 | Apr 15 | Apr 10 |
| 32°F | May 2 | Apr 24 | Apr 19 | Apr 15 | Apr 11 | Apr 7 | Apr 4 | Mar 31 | Mar 24 |
| 28°F | Apr 13 | Apr 7 | Apr 2 | Mar 30 | Mar 26 | Mar 20 | Mar 16 | Mar 11 | Mar 4 |
| 24°F | Mar 31 | Mar 22 | Mar 15 | Mar 10 | Mar 6 | Mar 2 | Feb 27 | Feb 21 | Feb 14 |
| 20°F | Mar 10 | Mar 4 | Feb 28 | Feb 23 | Feb 17 | Feb 12 | Feb 6 | Feb 1 | Jan 25 |
| 16°F | Feb 25 | Feb 15 | Feb 8 | Feb 2 | Jan 29 | Jan 24 | Jan 17 | Jan 9 | Jan 1 |
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 5 | Oct 21 | Nov 2 |
| Freeze (32°F) | Oct 16 | Nov 1 | Nov 12 |
| Hard (28°F) | Oct 27 | Nov 9 | Nov 21 |
| Severe (24°F) | Nov 6 | Nov 18 | Dec 1 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 5 | Oct 10 | Oct 14 | Oct 18 | Oct 21 | Oct 23 | Oct 26 | Oct 30 | Nov 2 |
| 32°F | Oct 16 | Oct 22 | Oct 25 | Oct 29 | Nov 1 | Nov 3 | Nov 5 | Nov 8 | Nov 12 |
| 28°F | Oct 27 | Nov 1 | Nov 4 | Nov 7 | Nov 9 | Nov 11 | Nov 14 | Nov 17 | Nov 21 |
| 24°F | Nov 6 | Nov 10 | Nov 13 | Nov 16 | Nov 18 | Nov 20 | Nov 23 | Nov 27 | Dec 1 |
| 20°F | Nov 15 | Nov 19 | Nov 22 | Nov 25 | Nov 28 | Dec 1 | Dec 4 | Dec 8 | Dec 14 |
| 16°F | Nov 22 | Nov 29 | Dec 2 | Dec 6 | Dec 9 | Dec 12 | Dec 17 | Dec 20 | Dec 29 |
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: Teec Nos Pos, Az, about 13.1 miles away@if(!empty($station['elevation_ft'])), at 5,290 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 Red Mesa, AZ?
On average, the last spring frost (32°F) around Red Mesa, AZ is about Apr 11. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 24.
When is the first frost in the fall?
The first fall frost around Red Mesa, AZ typically arrives about Nov 1. 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 11 on average, or Mar 24 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 200 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 86514 Planting calendar → Arizona frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026