Leona Valley reaches 100° on about 11 days a year, more than 91% of U.S. towns
A typical July afternoon reaches 91°, a January night drops to 38°, and snow is almost unheard of.
A year in Leona Valley at a glance
Each month’s typical high and low, and what it brings.
What stands out about Leona Valley’s climate
Compared with towns across the U.S., with Leona Valley’s place in California beside it.
What a year in Leona Valley feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 236 frost-free days a year
In half of years the last 32° night comes by April 6 and the first by November 29. Frost and day counts come from NOAA’s station at Fairmont, CA, 10 miles from the town’s center, 380 ft lower.
The 2023 USDA map puts Leona Valley’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 24°. 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 10 inches of rain a year
February is the wettest month and August the driest. Rain falls on about 45 days a year. Snow is rare: about 0.0" in a normal year at Saugus Pwr Plt 1, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Leona Valley
61% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Fairmont, CA.
Living with Leona Valley’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
236 frost-free days in zone 9a. The last frost comes by Apr 6 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 29.
Months with highs of 62–84° and lows of 40° or more: April, May, June, October and November. 19 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Leona Valley from natural hazards, wildfire is the largest share (54%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Leona Valley and its neighbors
Lancaster has the coldest January nights next door (34°, 5° colder) and Lancaster the hottest July afternoons (97°, 6° 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 Leona 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 |
|---|---|---|---|---|
| Leona Valley, CA | 38° | 91° | 10" | 0.0" |
| Sierra Vista, AZ | 32° | 91° | 14" | 0.4" |
| Finley, WA | 29° | 91° | 9" | 2.0" |
| Alpine, TX | 30° | 90° | 15" | 2.2" |
| Ashland, OR | 31° | 91° | 19" | 0.5" |
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 Leona Valley averaged 2.0° warmer than the 1900s. The biggest change is in January (+2.7°).
A bigger shift than in 91% 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 Leona Valley compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Leona Valley’s place among California’s.
Leona Valley weather by month
Highs, lows and precipitation from NOAA’s grid at Leona Valley’s center; snow, wet days and snow on the ground from Saugus Pwr Plt 1, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 55° | 38° | 2.0" | 0.0" | 7 | 0 | 43° – 53° |
| February | 56° | 39° | 2.7" | 0.0" | 8 | 0 | 41° – 55° |
| March | 62° | 40° | 1.6" | 0.0" | 7 | 0 | 44° – 58° |
| April | 67° | 44° | 0.7" | 0.0" | 4 | 0 | 49° – 60° |
| May | 75° | 51° | 0.2" | 0.0" | 3 | 0 | 53° – 70° |
| June | 84° | 59° | 0.1" | 0.0" | 1 | 0 | 64° – 77° |
| July | 91° | 65° | 0.1" | 0.0" | 1 | 0 | 72° – 83° |
| August | 91° | 65° | 0.0" | 0.0" | 0 | 0 | 75° – 82° |
| September | 85° | 60° | 0.1" | 0.0" | 1 | 0 | 68° – 78° |
| October | 74° | 52° | 0.5" | 0.0" | 3 | 0 | 59° – 69° |
| November | 63° | 43° | 0.6" | 0.0" | 4 | 0 | 45° – 59° |
| December | 54° | 38° | 1.6" | 0.0" | 6 | 0 | 41° – 51° |
| Year | 71° | 50° | 10.0" | 0.0" | 45 | 0 |
How much a month can swing
A normal is an average. May swings the most: from 1991 to 2020 its average ranged from 53° to 70°. August is the most reliable, staying within 7°.
Where Leona 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 Leona Valley’s center.
- Snow: Saugus Pwr Plt 1, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Fairmont, CA, 10 miles from the town’s center, 380 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 Leona Valley’s climate
What is the weather like in Leona Valley?
A typical July afternoon reaches 91°, a January night drops to 38°, and snow is almost unheard of. Milder January nights than 86% of U.S. towns; hotter July afternoons than 80% of U.S. towns.
How cold does it get in Leona Valley in winter?
December nights average 38°. About 24 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 41°.
How much snow does Leona Valley get?
About 0.0 inches in a normal winter at Saugus Pwr Plt 1, CA, so most winters see none.
How hot does it get in Leona Valley?
July, with a typical high of 91° and a low of 65°. About 74 days a year reach 90° and 11 reach 100° (Fairmont, CA).
When is the first and last frost in Leona Valley?
In half of years the last spring frost (32°) comes by April 6 and the first fall frost by November 29, about 236 frost-free days, at Fairmont, CA.
What growing zone is Leona Valley in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 24°.
What is the best time of year to visit Leona Valley?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Leona Valley getting warmer?
Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 91% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Leona 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.