Hardly any U.S. towns collect less precipitation than Oljato-Monument Valley: 6 inches a year
The warmest part of a July day comes in at 94° on average. Expect the heaviest rain or snow in August and the lightest in June. By July afternoons alone, it runs hotter than 93% of U.S. towns. Warm coats and heating bills mark the months from November to March, when means dip under 50°.
A year in Oljato-Monument Valley at a glance
Each month’s typical high and low, and what it brings.
What stands out about Oljato-Monument Valley’s climate
Compared with towns across the U.S., with Oljato-Monument Valley’s place in Arizona beside it.
What a year in Oljato-Monument Valley feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 205 frost-free days a year
In half of years the last 32° night comes by April 10 and the first by November 1. Frost and day counts come from NOAA’s station at Monument Valley, AZ, 5 miles from the town’s center, 210 ft higher.
The 2023 USDA map puts Oljato-Monument Valley’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 11°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 6 inches of rain a year
August is the wettest month and June the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Oljato-Monument Valley
75% of the work is heating. Months averaging under 55° run from November through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Monument Valley, AZ.
Living with Oljato-Monument Valley’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
205 frost-free days in zone 8a. The last frost comes by Apr 10 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 1.
Months with highs of 62–84° and lows of 40° or more: May, September and October. 22 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Oljato-Monument Valley from natural hazards, river flooding is the largest share (79%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Oljato-Monument Valley and similar climates
TownRatings has no climate map of the towns around Oljato-Monument Valley yet.
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Oljato-Monument Valley averaged 1.4° warmer than the 1900s. The biggest change is in March (+2.7°).
A bigger shift than in 55% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Oljato-Monument Valley compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Oljato-Monument Valley’s place among Arizona’s.
Oljato-Monument Valley weather by month
Highs, lows and precipitation from NOAA’s grid at Oljato-Monument Valley’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 43° | 23° | 0.4" | 26° – 40° |
| February | 49° | 28° | 0.5" | 33° – 46° |
| March | 60° | 35° | 0.4" | 42° – 52° |
| April | 67° | 40° | 0.3" | 49° – 59° |
| May | 78° | 49° | 0.4" | 57° – 69° |
| June | 89° | 60° | 0.1" | 69° – 79° |
| July | 94° | 67° | 0.6" | 77° – 83° |
| August | 91° | 64° | 0.8" | 74° – 82° |
| September | 83° | 56° | 0.7" | 64° – 72° |
| October | 70° | 43° | 0.7" | 52° – 61° |
| November | 55° | 31° | 0.3" | 35° – 48° |
| December | 43° | 23° | 0.5" | 27° – 38° |
| Year | 68° | 43° | 5.7" |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 26° to 40°. July is the most reliable, staying within 6°.
Where Oljato-Monument Valley’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Oljato-Monument Valley’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Monument Valley, AZ, 5 miles from the town’s center, 210 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Oljato-Monument Valley’s climate
What is the weather like in Oljato-Monument Valley?
A typical July afternoon reaches 94°, a January night drops to 23°. Milder January nights than 57% of U.S. towns; hotter July afternoons than 93% of U.S. towns.
How cold does it get in Oljato-Monument Valley in winter?
December nights average 23°. About 105 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 27°.
How hot does it get in Oljato-Monument Valley?
July, with a typical high of 94° and a low of 67°. About 59 days a year reach 90° and 2 reach 100° (Monument Valley, AZ).
When is the first and last frost in Oljato-Monument Valley?
In half of years the last spring frost (32°) comes by April 10 and the first fall frost by November 1, about 205 frost-free days, at Monument Valley, AZ.
What growing zone is Oljato-Monument Valley in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 11°.
What is the best time of year to visit Oljato-Monument Valley?
By one simple rule (highs of 62–84° and lows of 40° or more), May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Oljato-Monument Valley getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 55% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Oljato-Monument Valley.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.