Photo: Rmvisuals · CC BY-SA 4.0Spring Valley reaches 100° on about 78 days a year, more than all but 95 U.S. towns
A typical July afternoon reaches 103°, a January night drops to 36°, and snow is almost unheard of.
A year in Spring Valley at a glance
Each month’s typical high and low, and what it brings.
What stands out about Spring Valley’s climate
Compared with towns across the U.S., with Spring Valley’s place in Nevada beside it.
What a year in Spring Valley feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 333 frost-free days a year
In half of years the last 32° night comes by January 20 and the first by December 15. Frost and day counts come from NOAA’s station at Las Vegas Mccarran Airport, 6 miles from the city’s center point, 360 ft lower.
The 2023 USDA map puts Spring Valley’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 23°. 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 5 inches of rain a year
February is the wettest month and June the driest. Rain falls on about 29 days a year. Snow is rare: about 0.2" in a normal year at Las Vegas Wfo, NV, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Spring Valley
33% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from November 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 Las Vegas Mccarran Airport.
Living with Spring Valley’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
333 frost-free days in zone 9a. The last frost comes by Jan 20 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: March, April, October and November. 14 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Spring Valley from natural hazards, river flooding is the largest share (53%); heat waves, cold waves, winter storms and ice storms together are 38%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Spring Valley and its neighbors
Las Vegas has the coldest January nights next door (35°, 1° colder) and Paradise the hottest July afternoons (105°, 3° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Spring 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 |
|---|---|---|---|---|
| Spring Valley, NV | 36° | 103° | 5" | 0.2" |
| Wickenburg, AZ | 36° | 103° | 11" | 0.1" |
| California City, CA | 35° | 100° | 7" | 2.2" |
| Monahans, TX | 30° | 98° | 12" | 0.7" |
| Sunland Park, NM | 32° | 96° | 9" | 2.0" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Spring Valley averaged 1.8° warmer than the 1900s. The biggest change is in January (+2.8°).
A bigger shift than in 82% 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. In a city of 219,000 people, part of the change is the city itself: pavement and buildings hold heat (the urban heat island).
How Spring Valley compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Spring Valley’s place among Nevada’s.
Spring Valley weather by month
Highs, lows and precipitation from NOAA’s grid at Spring Valley’s center; snow, wet days and snow on the ground from Las Vegas Wfo, NV. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 58° | 36° | 0.6" | 0.0" | 3 | 0 | 43° – 53° |
| February | 62° | 39° | 0.8" | 0.0" | 4 | 0 | 44° – 57° |
| March | 70° | 46° | 0.4" | 0.0" | 3 | 0 | 51° – 64° |
| April | 77° | 52° | 0.2" | 0.0" | 2 | 0 | 58° – 69° |
| May | 87° | 60° | 0.1" | 0.0" | 1 | 0 | 67° – 80° |
| June | 98° | 70° | 0.1" | 0.0" | 1 | 0 | 77° – 89° |
| July | 103° | 76° | 0.4" | 0.0" | 3 | 0 | 86° – 92° |
| August | 101° | 75° | 0.4" | 0.0" | 3 | 0 | 85° – 91° |
| September | 94° | 66° | 0.3" | 0.0" | 2 | 0 | 77° – 84° |
| October | 81° | 54° | 0.4" | 0.0" | 2 | 0 | 63° – 73° |
| November | 67° | 42° | 0.3" | 0.0" | 2 | 0 | 47° – 60° |
| December | 56° | 35° | 0.5" | 0.2" | 3 | 0 | 42° – 50° |
| Year | 79° | 54° | 4.5" | 0.2" | 29 | 0 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 51° to 64°. July is the most reliable, staying within 7°.
Where Spring 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 Spring Valley’s center.
- Snow: Las Vegas Wfo, NV.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Las Vegas Mccarran Airport, 6 miles from the city’s center point, 360 ft lower; 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 Spring Valley’s climate
What is the weather like in Spring Valley?
A typical July afternoon reaches 103°, a January night drops to 36°, and snow is almost unheard of. Milder January nights than 83% of U.S. towns; hotter July afternoons than all but 95 U.S. towns.
How cold does it get in Spring Valley in winter?
December nights average 35°. About 10 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 42°.
How much snow does Spring Valley get?
About 0.2 inches in a normal winter at Las Vegas Wfo, NV, so most winters see none.
How hot does it get in Spring Valley?
July, with a typical high of 103° and a low of 76°. About 137 days a year reach 90° and 78 reach 100° (Las Vegas Mccarran Airport).
When is the first and last frost in Spring Valley?
In half of years the last spring frost (32°) comes by January 20 and the first fall frost by December 15, about 333 frost-free days, at Las Vegas Mccarran Airport.
What growing zone is Spring Valley in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 23°.
What is the best time of year to visit Spring Valley?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Spring Valley getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 82% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Spring 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.