Photo: Destiny Diaz · CC BY-SA 4.0Morongo Valley reaches 100° on about 11 days a year, more than 91% of U.S. towns
A typical July afternoon reaches 99°, a January night drops to 40°, and about 2 inches of snow falls in a normal winter.
A year in Morongo Valley at a glance
Each month’s typical high and low, and what it brings.
What stands out about Morongo Valley’s climate
Compared with towns across the U.S., with Morongo Valley’s place in California beside it.
What a year in Morongo Valley feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 297 frost-free days a year
In half of years the last 32° night comes by February 25 and the first by December 15. Frost and day counts come from NOAA’s station at Morongo Valley N, CA, 1.0 miles from the town’s center, 210 ft higher.
The 2023 USDA map puts Morongo Valley’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 26°. 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 2 inches of snow a winter
Snow, measured at Yucca Valley, CA, falls mostly in December. Precipitation (rain plus melted snow) adds up to 8 inches a year; January is the wettest month and June the driest. Rain or snow falls on about 26 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Morongo Valley
52% of the work is heating. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Morongo Valley N, CA.
Living with Morongo Valley’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
297 frost-free days in zone 9b. The last frost comes by Feb 25 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 15.
Months with highs of 62–84° and lows of 40° or more: February, March, April, May, October and November. 65 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Morongo Valley from natural hazards, river flooding is the largest share (56%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Morongo Valley and similar climates
TownRatings has no climate map of the towns around Morongo Valley yet.
Climates most like Morongo Valley’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Morongo Valley, CA | 40° | 99° | 8" | 1.7" |
| Sahuarita, AZ | 37° | 99° | 12" | 0.1" |
| Sunland Park, NM | 32° | 96° | 9" | 2.0" |
| Ivins, UT | 32° | 100° | 11" | 1.2" |
| El Paso, TX | 32° | 96° | 9" | 2.8" |
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 Morongo Valley averaged 2.0° warmer than the 1900s. The biggest change is in January (+2.7°).
A bigger shift than in 88% 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 Morongo Valley compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Morongo Valley’s place among California’s.
Morongo Valley weather by month
Highs, lows and precipitation from NOAA’s grid at Morongo Valley’s center; snow, wet days and snow on the ground from Yucca Valley, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 62° | 40° | 2.0" | 0.0" | 4 | 47° – 57° |
| February | 64° | 41° | 1.4" | 0.7" | 3 | 45° – 60° |
| March | 69° | 44° | 1.3" | 0.0" | 3 | 49° – 63° |
| April | 75° | 48° | 0.3" | 0.0" | 2 | 56° – 66° |
| May | 83° | 54° | 0.1" | 0.0" | 1 | 61° – 75° |
| June | 93° | 62° | 0.0" | 0.0" | 0 | 71° – 82° |
| July | 99° | 68° | 0.2" | 0.0" | 3 | 79° – 87° |
| August | 98° | 68° | 0.2" | 0.0" | 2 | 81° – 87° |
| September | 92° | 64° | 0.2" | 0.0" | 2 | 74° – 82° |
| October | 81° | 54° | 0.5" | 0.0" | 1 | 64° – 74° |
| November | 70° | 45° | 0.4" | 0.1" | 2 | 49° – 63° |
| December | 61° | 39° | 1.3" | 0.9" | 4 | 45° – 55° |
| Year | 79° | 52° | 7.9" | 1.7" | 26 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 45° to 60°. August is the most reliable, staying within 7°.
Where Morongo 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 Morongo Valley’s center.
- Snow: Yucca Valley, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Morongo Valley N, CA, 1.0 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 Morongo Valley’s climate
What is the weather like in Morongo Valley?
A typical July afternoon reaches 99°, a January night drops to 40°, and about 2 inches of snow falls in a normal winter. Milder January nights than 89% of U.S. towns; hotter July afternoons than all but 175 U.S. towns.
How cold does it get in Morongo Valley in winter?
December nights average 39°. About 13 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 45°.
How much snow does Morongo Valley get?
About 1.7 inches in a normal winter at Yucca Valley, CA, most of it in December.
How hot does it get in Morongo Valley?
July, with a typical high of 99° and a low of 68°. About 91 days a year reach 90° and 11 reach 100° (Morongo Valley N, CA).
When is the first and last frost in Morongo Valley?
In half of years the last spring frost (32°) comes by February 25 and the first fall frost by December 15, about 297 frost-free days, at Morongo Valley N, CA.
What growing zone is Morongo Valley in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 26°.
What is the best time of year to visit Morongo Valley?
By one simple rule (highs of 62–84° and lows of 40° or more), February, March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Morongo Valley getting warmer?
Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 88% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Morongo 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.