Monument Valley, Arizona climate: Climate normals at a NOAA weather station
Monument Valley's normal year runs from 25°F December nights to 93°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.6°C, December lows of −4°C, July highs of 34°C.
- NOAA stationMonument Valley
- Station IDUSC00025665
- Location36.99°N 110.12°W
- Elevation5,501 ft (1,677 m)
On October 23, the normal high in Monument Valley is 66°F and the normal low 43°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Monument Valley.
- Jan 41° 25°
- Feb 48° 29°
- Mar 59° 36°
- Apr 67° 42°
- May 77° 54°
- Jun 89° 65°
- Jul 93° 68°
- Aug 90° 65°
- Sep 82° 58°
- Oct 69° 46°
- Nov 53° 34°
- Dec 41° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Monument Valley each month?
July is the warmest month, with normal highs of 93°F; December the coldest, with normal lows of 25°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 41°F | 25°F | 33.1°F | – | <1 | 26 | 9 h 50 min |
| February | 48°F | 29°F | 38.2°F | – | <1 | 20 | 10 h 50 min |
| March | 59°F | 36°F | 47.4°F | – | <1 | 11 | 11 h 50 min |
| April | 67°F | 42°F | 54.7°F | – | <1 | 5 | 13 h 10 min |
| May | 77°F | 54°F | 65.3°F | – | 2 | 1 | 14 h 10 min |
| June | 89°F | 65°F | 76.6°F | – | 13 | <1 | 14 h 40 min |
| July | 93°F | 68°F | 80.4°F | – | 25 | <1 | 14 h 30 min |
| August | 90°F | 65°F | 77.3°F | – | 16 | <1 | 13 h 40 min |
| September | 82°F | 58°F | 70.2°F | – | 3 | <1 | 12 h 30 min |
| October | 69°F | 46°F | 57.5°F | – | <1 | 1 | 11 h 20 min |
| November | 53°F | 34°F | 43.3°F | – | <1 | 14 | 10 h 10 min |
| December | 41°F | 25°F | 33.0°F | – | <1 | 28 | 9 h 40 min |
| Year (annual) | 68°F | 45°F | 56.4°F | – | 59 | 105 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 5°C | −4°C | 0.6°C |
| February | 9°C | −2°C | 3.4°C |
| March | 15°C | 2°C | 8.6°C |
| April | 20°C | 6°C | 12.6°C |
| May | 25°C | 12°C | 18.5°C |
| June | 31°C | 18°C | 24.8°C |
| July | 34°C | 20°C | 26.9°C |
| August | 32°C | 18°C | 25.2°C |
| September | 28°C | 15°C | 21.2°C |
| October | 21°C | 8°C | 14.2°C |
| November | 12°C | 1°C | 6.3°C |
| December | 5°C | −4°C | 0.6°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Mexican Hat (18 miles away), gets 2 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00025665; 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.
Which months are mildest at Monument Valley?
Normal highs sit between 65°F and 85°F in April, May, 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 USC00025665.
When is the last frost at Monument Valley?
In Monument Valley, the last spring frost (32°F) comes after April 10 in half of years and after April 30 in one year in ten; the first autumn frost comes before November 1 in half of years and before October 17 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
- April 101 year in 10 after April 30; 9 in 10 after March 20
- First autumn frost, half of years before
- November 11 year in 10 before October 17; 9 in 10 before November 16
NOAA puts the median frost-free season at 205 days, and the season without a hard freeze (28°F) at 229 days.
A hard freeze (28°F) comes after March 25 in half of springs and before November 12 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Monument Valley in zone 8a in ZIP code 84536, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 7b: the coldest night of a typical year reaches 10°F (15 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Arizona · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00025665; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 at Monument Valley?
In a normal year in Monument Valley, 59 days a year reach 90°F (2 of them 100°F or more) and 105 nights fall to 32°F or colder.
- Days at 90°F or more
- 59a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 105a normal year
- Days that stay below freezing
- 9high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00025665.
How sunny is it at Monument Valley?
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds at Monument Valley, 5.5 kWh per square metre a day. June is the sunniest month (93%) and December the cloudiest (79%).
| 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 | 89% | 7.8 |
| June | 93% | 8.5 |
| July | 86% | 7.4 |
| August | 86% | 6.7 |
| September | 90% | 6.0 |
| October | 89% | 4.7 |
| November | 88% | 3.5 |
| December | 79% | 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 many heating and cooling degree days does Monument Valley record?
A normal year at Monument Valley brings 4,620 heating degree days, 14% fewer than the median U.S. place (5,373), and 1,523 cooling degree days, 68% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,194 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 989 | 0 |
| February | 750 | 0 |
| March | 546 | 0 |
| April | 317 | 8 |
| May | 96 | 104 |
| June | 7 | 356 |
| July | 0 | 477 |
| August | 1 | 384 |
| September | 24 | 179 |
| October | 249 | 15 |
| November | 651 | 0 |
| December | 992 | 0 |
| Year (annual) | 4,620 | 1,523 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00025665. 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 Monument Valley's climate compare?
Monument Valley is warmer than 19 of the 97 places with their own NOAA record in Arizona. Across the 7,247 U.S. stations with normals, its annual mean of 56.4°F is warmer than 65%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Monument Valley share this climate record?
2 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.
- Oljato-Monument Valley, UT683 people · 8 mi NW
- Oljato-Monument Valley, AZ59 people · 5 mi W
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 Monument Valley's climate
What is the coldest month at Monument Valley?
December, with a normal high of 41°F and a normal low of 25°F. The warmest is July (93°F by day, 68°F at night).
Does it snow at Monument Valley?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Mexican Hat (18 miles away), records 2 inches of snow in a normal year.
What plant hardiness zone is Monument Valley in?
The USDA's 2023 map puts Monument Valley in zone 8a in ZIP code 84536, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 10°F (15 years, 1991-2020): zone 7b.
How late can frost come at Monument Valley?
In half of years the last 32°F night comes after April 10; in one year in ten it comes after April 30. Waiting until April 30 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arizona climateThe statewide normals and every place in the state
- Mexican Hat, UT18 miles from this station, 58.2°F a year
- Valley Of The Gods, UT22 miles from this station, 57.3°F a year
- Betatakin, AZ32 miles from this station, 51.0°F a year
- Bluff, UT37 miles from this station, 55.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made