Williams Canyon has some of the mildest winter nights among U.S. towns
High summer brings afternoon highs near 87°. Its yearly precipitation falls short of 94% of U.S. towns. Warming shows here too: 2.1° more than in 1901–2000, led by January. Picnics, hikes and garden evenings come into their own from October to June, with highs of 66–81°.
A year in Williams Canyon at a glance
Each month’s typical high and low, and what it brings.
What stands out about Williams Canyon’s climate
Compared with towns across the U.S., with Williams Canyon’s place in California beside it.
What a year in Williams Canyon feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Frost is rare
Frost and day counts come from Irvine Rch, CA, 5 miles away.
The 2023 USDA map puts Williams Canyon’s center in zone 10b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 37°. Plant labels use the zone; frost dates tell you when to plant.
90° days by month
Average days at 90° or more
About 14 inches of rain a year
February is the wettest month and August the driest. Rain falls on about 35 days a year. Snow is rare: about 0.0" in a normal year at Anaheim, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Williams Canyon
37% of the work is heating, so air conditioning is the bigger bill. No month averages under 55°.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Irvine Rch, CA.
Living with Williams Canyon’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 10b. Frost comes about 1 winter in 28, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, June, October, November and December. 1.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Williams Canyon from natural hazards, wildfire is the largest share (50%). Normals are averages; the hazards page covers the extremes.
Natural hazards →Williams Canyon and similar climates
TownRatings has no climate map of the towns around Williams Canyon yet.
Climates most like Williams Canyon’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 |
|---|---|---|---|---|
| Williams Canyon, CA | 48° | 87° | 14" | 0.0" |
| Ewa Beach, HI | 62° | 87° | 17" | 0.0" |
| Port Isabel, TX | 52° | 92° | 26" | 0.2" |
| Sierra Vista Southeast, AZ | 32° | 91° | 15" | 0.7" |
| The Dalles, OR | 31° | 88° | 15" | 5.5" |
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 Williams Canyon averaged 2.1° warmer than the 1900s. The biggest change is in January (+3.2°).
A bigger shift than in 92% 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 Williams Canyon compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Williams Canyon’s place among California’s.
Williams Canyon weather by month
Highs, lows and precipitation from NOAA’s grid at Williams Canyon’s center; snow, wet days and snow on the ground from Anaheim, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 66° | 48° | 3.0" | 0.0" | 6 | 0 | 53° – 63° |
| February | 66° | 47° | 3.6" | 0.0" | 6 | 0 | 50° – 65° |
| March | 68° | 48° | 2.1" | 0.0" | 5 | 0 | 52° – 66° |
| April | 72° | 49° | 0.9" | 0.0" | 3 | 0 | 56° – 64° |
| May | 75° | 53° | 0.3" | 0.0" | 2 | 0 | 60° – 69° |
| June | 81° | 57° | 0.0" | 0.0" | 1 | 0 | 66° – 73° |
| July | 87° | 62° | 0.1" | 0.0" | 1 | 0 | 72° – 81° |
| August | 89° | 64° | 0.0" | 0.0" | 0 | 0 | 73° – 80° |
| September | 87° | 63° | 0.2" | 0.0" | 1 | 0 | 71° – 79° |
| October | 79° | 59° | 0.5" | 0.0" | 2 | 0 | 64° – 74° |
| November | 73° | 53° | 1.0" | 0.0" | 3 | 0 | 56° – 66° |
| December | 66° | 48° | 2.3" | 0.0" | 6 | 0 | 53° – 63° |
| Year | 76° | 54° | 13.8" | 0.0" | 35 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 50° to 65°. August is the most reliable, staying within 7°.
Where Williams Canyon’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 Williams Canyon’s center.
- Snow: Anaheim, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Irvine Rch, CA, 5 miles from the town’s center, 920 ft lower; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- 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 Williams Canyon’s climate
What is the weather like in Williams Canyon?
A typical July afternoon reaches 87°, a January night drops to 48°, and snow is almost unheard of. Milder January nights than 96% of U.S. towns; hotter July afternoons than 62% of U.S. towns.
How cold does it get in Williams Canyon in winter?
February nights average 47°. A night at 32° or below comes in only some winters (0.7 a year on average). In the coldest February of the last 30 years the month averaged 50°.
How much snow does Williams Canyon get?
About 0.0 inches in a normal winter at Anaheim, CA, so most winters see none.
How hot does it get in Williams Canyon?
July, with a typical high of 87° and a low of 62°. About 62 days a year reach 90° and 8 reach 100° (Irvine Rch, CA).
When is the first and last frost in Williams Canyon?
Most years have no frost at all: a 32° night comes in about 4% of winters at Irvine Rch, CA, usually in December or January.
What growing zone is Williams Canyon in?
Zone 10b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 37°.
What is the best time of year to visit Williams Canyon?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, June, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Williams Canyon getting warmer?
Yes: 1991–2020 averaged 2.1° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 92% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Williams Canyon.
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.