Photo: Perdelsky at English Wikipedia · Public domainPoway reaches 100° on about 12 days a year, more than 92% of U.S. towns
Deep winter brings January lows near 42°. By precipitation alone, it ranks drier than 94% of U.S. towns. Since 1901–2000, the year has warmed by 2.2°, most of all in January. Garden planting can start around February 2; autumn frost returns near December 7.
A year in Poway at a glance
Each month’s typical high and low, and what it brings.
What stands out about Poway’s climate
Compared with towns across the U.S., with Poway’s place in California beside it.
What a year in Poway feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 309 frost-free days a year
In half of years the last 32° night comes by February 2 and the first by December 7. Frost and day counts come from NOAA’s station at San Pasqual Animal Park, CA, 8 miles from the town’s center, 350 ft lower.
The 2023 USDA map puts Poway’s center in zone 10a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 32°. 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 14 inches of rain a year
February is the wettest month and July the driest. Rain falls on about 41 days a year. Snow is rare: about 0.0" in a normal year at Poway Valley, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Poway
49% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at San Pasqual Animal Park, CA.
Living with Poway’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
309 frost-free days in zone 10a. The last frost comes by Feb 2 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 7.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, June, October, November and December. 110 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Poway from natural hazards, wildfire is the largest share (44%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Poway and its neighbors
Every town next door is within a degree of Poway in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Poway’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 |
|---|---|---|---|---|
| Poway, CA | 42° | 87° | 14" | 0.0" |
| Sierra Vista Southeast, AZ | 32° | 91° | 15" | 0.7" |
| The Dalles, OR | 31° | 88° | 15" | 5.5" |
| Alpine, TX | 30° | 90° | 15" | 2.2" |
| Kennewick, WA | 29° | 90° | 8" | 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 Poway averaged 2.2° warmer than the 1900s. The biggest change is in January (+3.3°).
A bigger shift than in 96% 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 Poway compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Poway’s place among California’s.
Poway weather by month
Highs, lows and precipitation from NOAA’s grid at Poway’s center; snow, wet days and snow on the ground from Poway Valley, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 68° | 42° | 2.8" | 0.0" | 7 | 0 | 51° – 61° |
| February | 68° | 44° | 3.2" | 0.0" | 7 | 0 | 52° – 62° |
| March | 70° | 46° | 2.2" | 0.0" | 6 | 0 | 53° – 64° |
| April | 73° | 49° | 1.0" | 0.0" | 4 | 0 | 56° – 65° |
| May | 76° | 53° | 0.4" | 0.0" | 3 | 0 | 61° – 70° |
| June | 81° | 57° | 0.1" | 0.0" | 1 | 0 | 65° – 73° |
| July | 87° | 61° | 0.1" | 0.0" | 1 | 0 | 70° – 79° |
| August | 89° | 62° | 0.1" | 0.0" | 0 | 0 | 72° – 78° |
| September | 87° | 60° | 0.1" | 0.0" | 1 | 0 | 70° – 77° |
| October | 81° | 54° | 0.6" | 0.0" | 2 | 0 | 63° – 72° |
| November | 74° | 46° | 1.1" | 0.0" | 4 | 0 | 53° – 64° |
| December | 67° | 41° | 2.1" | 0.0" | 6 | 0 | 51° – 58° |
| Year | 77° | 51° | 13.6" | 0.0" | 41 | 0 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 53° to 64°. August is the most reliable, staying within 6°.
Where Poway’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 Poway’s center.
- Snow: Poway Valley, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: San Pasqual Animal Park, CA, 8 miles from the town’s center, 350 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 Poway’s climate
What is the weather like in Poway?
A typical July afternoon reaches 87°, a January night drops to 42°, and snow is almost unheard of. Milder January nights than 91% of U.S. towns; hotter July afternoons than 59% of U.S. towns.
How cold does it get in Poway in winter?
December nights average 41°. About 16 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 51°.
How much snow does Poway get?
About 0.0 inches in a normal winter at Poway Valley, CA, so most winters see none.
How hot does it get in Poway?
July, with a typical high of 87° and a low of 61°. About 78 days a year reach 90° and 12 reach 100° (San Pasqual Animal Park, CA).
When is the first and last frost in Poway?
In half of years the last spring frost (32°) comes by February 2 and the first fall frost by December 7, about 309 frost-free days, at San Pasqual Animal Park, CA.
What growing zone is Poway in?
Zone 10a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 32°.
What is the best time of year to visit Poway?
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 Poway getting warmer?
Yes: 1991–2020 averaged 2.2° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 96% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Poway.
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.