Lukachukai, Arizona climate: Normal weather by month, frost dates and records
Lukachukai's normal year runs from 18°F January nights to 88°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.6°C, January lows of −8°C, July highs of 31°C.
- NOAA stationLukachukai
- Station IDUSC00025129
- Location36.42°N 109.23°W
- Elevation6,520 ft (1,987 m)
- Population (census place)1,876
On October 24, the normal high in Lukachukai is 63°F and the normal low 36°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Lukachukai.
- Jan 39° 18°
- Feb 46° 24°
- Mar 55° 30°
- Apr 60° 35°
- May 72° 43°
- Jun 84° 53°
- Jul 88° 59°
- Aug 85° 58°
- Sep 79° 52°
- Oct 67° 39°
- Nov 53° 29°
- Dec 41° 19°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Lukachukai each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 18°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 39°F | 18°F | 28.6°F | – | <1 | 29 | 10 h |
| February | 46°F | 24°F | 35.1°F | – | <1 | 24 | 10 h 50 min |
| March | 55°F | 30°F | 42.6°F | – | <1 | 21 | 11 h 50 min |
| April | 60°F | 35°F | 47.4°F | – | <1 | 13 | 13 h 10 min |
| May | 72°F | 43°F | 57.6°F | – | <1 | 3 | 14 h |
| June | 84°F | 53°F | 68.4°F | – | 4 | <1 | 14 h 40 min |
| July | 88°F | 59°F | 73.2°F | – | 13 | <1 | 14 h 30 min |
| August | 85°F | 58°F | 71.4°F | – | 4 | <1 | 13 h 40 min |
| September | 79°F | 52°F | 65.4°F | – | <1 | 1 | 12 h 30 min |
| October | 67°F | 39°F | 52.5°F | – | <1 | 6 | 11 h 20 min |
| November | 53°F | 29°F | 40.6°F | – | <1 | 20 | 10 h 20 min |
| December | 41°F | 19°F | 30.3°F | – | <1 | 29 | 9 h 40 min |
| Year (annual) | 64°F | 38°F | 51.1°F | – | 22 | 146 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 4°C | −8°C | −1.9°C |
| February | 8°C | −4°C | 1.7°C |
| March | 13°C | −1°C | 5.9°C |
| April | 16°C | 1°C | 8.6°C |
| May | 22°C | 6°C | 14.2°C |
| June | 29°C | 12°C | 20.2°C |
| July | 31°C | 15°C | 22.9°C |
| August | 29°C | 14°C | 21.9°C |
| September | 26°C | 11°C | 18.6°C |
| October | 19°C | 4°C | 11.4°C |
| November | 11°C | −2°C | 4.8°C |
| December | 5°C | −7°C | −0.9°C |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00025129; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Lukachukai?
Normal highs sit between 65°F and 85°F in May, June, August, September and October.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00025129.
When is the last frost in Lukachukai?
In Lukachukai, the last spring frost (32°F) comes after May 3 in half of years and after May 22 in one year in ten; the first autumn frost comes before October 17 in half of years and before October 2 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 31 year in 10 after May 22; 9 in 10 after April 21
- First autumn frost, half of years before
- October 171 year in 10 before October 2; 9 in 10 before October 30
NOAA puts the median frost-free season at 163 days, and the season without a hard freeze (28°F) at 183 days.
A hard freeze (28°F) comes after April 23 in half of springs and before October 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lukachukai in zone 7a in ZIP code 86507.
Frost dates for every NOAA station in Arizona · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00025129; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Lukachukai?
In a normal year in Lukachukai, 22 days a year reach 90°F and 146 nights fall to 32°F or colder.
- Days at 90°F or more
- 22a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 146a normal year
- Days that stay below freezing
- 14high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00025129.
How sunny is Lukachukai?
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Lukachukai, 5.6 kWh per square metre a day. June is the sunniest month (93%) and December the cloudiest (78%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 81% | 3.0 |
| February | 81% | 4.0 |
| March | 86% | 5.6 |
| April | 87% | 6.9 |
| May | 88% | 7.8 |
| June | 93% | 8.5 |
| July | 87% | 7.5 |
| August | 86% | 6.7 |
| September | 89% | 5.9 |
| October | 89% | 4.7 |
| November | 87% | 3.5 |
| December | 78% | 2.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Lukachukai need?
A normal year in Lukachukai brings 5,733 heating degree days, 7% more than the median U.S. place (5,373), and 685 cooling degree days, 25% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,881 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,128 | 0 |
| February | 837 | 0 |
| March | 693 | 0 |
| April | 526 | 0 |
| May | 243 | 12 |
| June | 36 | 137 |
| July | 2 | 255 |
| August | 4 | 201 |
| September | 68 | 80 |
| October | 387 | 1 |
| November | 732 | 0 |
| December | 1,076 | 0 |
| Year (annual) | 5,733 | 685 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00025129. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Lukachukai's climate compare?
Lukachukai is warmer than 12 of the other 96 places with their own NOAA record in Arizona. Across the 7,247 U.S. stations with normals, its annual mean of 51.1°F is warmer than 45%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Lukachukai share this climate record?
7 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Tsaile, AZ1,667 people · 8 mi S
- Round Rock, AZ543 people · 14 mi NW
- Newcomb, NM369 people · 30 mi E
- Sheep Springs, NM369 people · 35 mi SE
- Sanostee, NM259 people · 20 mi E
- Sehili, AZ190 people · 10 mi S
- Red Rock, AZ76 people · 15 mi NE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Lukachukai's climate
What is the coldest month in Lukachukai?
January, with a normal high of 39°F and a normal low of 18°F. The warmest is July (88°F by day, 59°F at night).
What plant hardiness zone is Lukachukai in?
The USDA's 2023 map puts Lukachukai in zone 7a in ZIP code 86507.
How late can frost come in Lukachukai?
In half of years the last 32°F night comes after May 3; in one year in ten it comes after May 22. Waiting until May 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arizona climateThe statewide normals and every place in the state
- Canyon De Chelly, AZ25 miles from this station, 53.5°F a year
- Teec Nos Pos, AZ35 miles from this station, 57.2°F a year
- Ganado, AZ52 miles from this station, 50.9°F a year
- Window Rock, AZ53 miles from this station, 49.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made