USDA Hardiness Zone 7b
Frost Dates for 86040 — Page, Arizona
NOAA 1991–2020 normals from Page, AZ (4,270 ft), 14 miles north.
Updated
In Page, the last spring frost (32°F) is around March 27 in half of years and has passed by April 16 in nine years out of ten. The first fall frost comes around November 9, as early as October 26 one year in ten, leaving a typical freeze-free season of 226 days (NOAA, Page, AZ).
- Last spring frost
- March 27
- First fall frost
- November 9
- Growing season
- 226 days
- Hardiness zone
- 7b
50% probability
50% probability
freeze-free, 50%
5 to 10°F (-15.0 to -12.2°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 25%
- Snow per year
- 0.3"
median, 1991–2020
median, 1991–2020
4 of 16 observed
NOAA normal
Frost risk by date in Page
Half of springs at Page, AZ see their last 32°F night by March 27; only one in ten is past it by March 8, and one in ten still has one after April 16. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 9 20%, and after April 16 10%. The 20 days between the even-odds date and the one-in-ten date is narrower than at 52% of the 98 Arizona stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 9 in half of years, as early as October 26 one year in ten, and holds off past November 20 one year in ten. A hard freeze of 28°F follows 10 days later, around November 19; in spring the one-in-ten date for 28°F is March 26, 21 days before the 32°F one. The freeze-free season lasts 226 days in a typical year, shorter than at 52% of the 98 Arizona stations; it reaches 250 days one year in ten and falls short of 202 one year in ten. On average 83 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 17 days longer, to about April 13, and return around October 30. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 78%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 29 | Apr 3 | Apr 7 | Apr 10 | Apr 13 | Apr 17 | Apr 20 | Apr 25 | Apr 30 |
| 32°F | Mar 8 | Mar 12 | Mar 17 | Mar 21 | Mar 27 | Mar 31 | Apr 4 | Apr 9 | Apr 16 |
| 28°F | Feb 16 | Feb 23 | Feb 26 | Mar 1 | Mar 4 | Mar 8 | Mar 11 | Mar 16 | Mar 26 |
| 24°F | Jan 28 | Feb 4 | Feb 8 | Feb 12 | Feb 16 | Feb 21 | Feb 25 | Mar 1 | Mar 6 |
| 20°F98% of yrs | Jan 2 | Jan 13 | Jan 21 | Jan 27 | Feb 2 | Feb 5 | Feb 10 | Feb 16 | Feb 23 |
| 16°F78% of yrs | Dec 19 | Dec 28 | Jan 4 | Jan 9 | Jan 17 | Jan 24 | Jan 31 | Feb 5 | Feb 13 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 16 | Oct 21 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 7 | Nov 11 |
| 32°F | Oct 26 | Oct 31 | Nov 3 | Nov 6 | Nov 9 | Nov 11 | Nov 14 | Nov 17 | Nov 20 |
| 28°F | Nov 5 | Nov 10 | Nov 14 | Nov 17 | Nov 19 | Nov 21 | Nov 24 | Nov 26 | Dec 1 |
| 24°F | Nov 14 | Nov 20 | Nov 22 | Nov 25 | Nov 28 | Dec 2 | Dec 6 | Dec 10 | Dec 15 |
| 20°F98% of yrs | Nov 26 | Dec 1 | Dec 5 | Dec 8 | Dec 12 | Dec 16 | Dec 20 | Dec 26 | Jan 3 |
| 16°F78% of yrs | Dec 6 | Dec 11 | Dec 17 | Dec 22 | Dec 27 | Jan 1 | Jan 6 | Jan 15 | Jan 29 |
Freeze probabilities 1991–2020 at Page, AZ, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 86040 →Compare Page with another place →
Weather by month in Page
July is the warmest month at Page, AZ, averaging 97°F by day and 70°F at night; December is the coldest at 44°F and 27°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 38% of years.
Warmth for growing adds up to 4,647 growing degree days a year (base 50°F), fewer than at 67% of the 102 Arizona stations. 36% of them (1,691) have built up by the end of June, and July adds the most, 1,026. Precipitation totals 6.8 inches a year, most in August (0.9") and least in June (0.1"); May to September bring 43% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 45 | 26 | 0.7 | 100% | 26 | 0 |
| Feb | 51 | 30 | 0.5 | 100% | 16 | 4 |
| Mar | 62 | 38 | 0.5 | 96% | 5 | 79 |
| Apr | 71 | 44 | 0.4 | 38% | 1 | 242 |
| May | 81 | 54 | 0.4 | 0% | 0 | 532 |
| Jun | 92 | 63 | 0.1 | 0% | 0 | 834 |
| Jul | 97 | 70 | 0.6 | 0% | 0 | 1026 |
| Aug | 94 | 68 | 0.9 | 0% | 0 | 947 |
| Sep | 85 | 59 | 0.9 | 0% | 0 | 665 |
| Oct | 71 | 47 | 0.9 | 22% | <1 | 288 |
| Nov | 55 | 35 | 0.5 | 100% | 9 | 29 |
| Dec | 44 | 27 | 0.4 | 100% | 25 | 0 |
Monthly normals 1991–2020 at Page, AZ (4,270 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Paria Rs, UT, 37 miles northwest of Page and 156 feet higher, has a last frost 23 days later (April 19), a first frost 17 days earlier (October 23), a season 40 days shorter.
When it snows in Page, Arizona
Measurable snow is rare here: only 4 of 16 winters from 1991 to 2020 recorded 0.1 inch or more at Lees Ferry, AZ, 13.5 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 86040
| When | What to do |
|---|---|
| January 16 – January 30 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 30 – February 13 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 27 – March 13 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 27 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 17 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 26 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 9 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 86040 is 14 miles from Page, AZ, which stands at 4,270 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 86040 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.