Photo: Corey Taratuta · CC BY 2.0Picacho reaches 100° on about 104 days a year, more than all but 62 U.S. towns
A typical July afternoon reaches 105°, a January night drops to 39°, and snow is almost unheard of.
A year in Picacho at a glance
Each month’s typical high and low, and what it brings.
What stands out about Picacho’s climate
Compared with towns across the U.S., with Picacho’s place in Arizona beside it.
What a year in Picacho feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 308 frost-free days a year
In half of years the last 32° night comes by February 6 and the first by December 9. Frost and day counts come from NOAA’s station at Picacho 8 Se, AZ, 7 miles from the town’s center, 360 ft higher.
The 2023 USDA map puts Picacho’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 9 inches of rain a year
August is the wettest month and June the driest. Rain falls on about 39 days a year. Snow is rare: about 0.0" in a normal year at Picacho 8 Se, AZ, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Picacho
24% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55°: December and January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Picacho 8 Se, AZ.
Living with Picacho’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
308 frost-free days in zone 9a. The last frost comes by Feb 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 Dec 9.
Months with highs of 62–84° and lows of 40° or more: February, March and November. 17 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Picacho from natural hazards, river flooding is the largest share (59%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Picacho and its neighbors
Every town next door is within a degree of Picacho in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Picacho’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 |
|---|---|---|---|---|
| Picacho, AZ | 39° | 105° | 9" | 0.0" |
| Henderson, NV | 40° | 105° | 5" | 0.2" |
| Desert Hot Springs, CA | 42° | 105° | 7" | 0.8" |
| St. George, UT | 33° | 103° | 8" | 1.2" |
| Eagle Pass, TX | 41° | 98° | 19" | 0.0" |
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 Picacho averaged 1.8° warmer than the 1900s. The biggest change is in March (+2.7°).
A bigger shift than in 77% 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 Picacho compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Picacho’s place among Arizona’s.
Picacho weather by month
Highs, lows and precipitation from NOAA’s grid at Picacho’s center; snow, wet days and snow on the ground from Picacho 8 Se, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 67° | 39° | 1.0" | 0.0" | 4 | 0 | 50° – 59° |
| February | 71° | 42° | 1.1" | 0.0" | 4 | 0 | 51° – 62° |
| March | 78° | 47° | 0.8" | 0.0" | 3 | 0 | 55° – 69° |
| April | 86° | 53° | 0.3" | 0.0" | 1 | 0 | 63° – 74° |
| May | 95° | 61° | 0.2" | 0.0" | 1 | 0 | 72° – 83° |
| June | 104° | 71° | 0.1" | 0.0" | 1 | 0 | 81° – 91° |
| July | 105° | 77° | 1.1" | 0.0" | 5 | 0 | 89° – 93° |
| August | 103° | 77° | 1.5" | 0.0" | 6 | 0 | 87° – 94° |
| September | 99° | 70° | 0.9" | 0.0" | 4 | 0 | 81° – 87° |
| October | 89° | 58° | 0.5" | 0.0" | 3 | 0 | 70° – 78° |
| November | 77° | 46° | 0.6" | 0.0" | 3 | 0 | 53° – 68° |
| December | 66° | 39° | 1.0" | 0.0" | 4 | 0 | 49° – 57° |
| Year | 87° | 57° | 9.0" | 0.0" | 39 | 0 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 53° to 68°. July is the most reliable, staying within 5°.
Where Picacho’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 Picacho’s center.
- Snow: Picacho 8 Se, AZ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Picacho 8 Se, AZ, 7 miles from the town’s center, 360 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 Picacho’s climate
What is the weather like in Picacho?
A typical July afternoon reaches 105°, a January night drops to 39°, and snow is almost unheard of. Milder January nights than 88% of U.S. towns; hotter July afternoons than all but 75 U.S. towns.
How cold does it get in Picacho in winter?
December nights average 39°. About 10 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 49°.
How much snow does Picacho get?
About 0.0 inches in a normal winter at Picacho 8 Se, AZ, so most winters see none.
How hot does it get in Picacho?
July, with a typical high of 105° and a low of 77°. About 176 days a year reach 90° and 104 reach 100° (Picacho 8 Se, AZ).
When is the first and last frost in Picacho?
In half of years the last spring frost (32°) comes by February 6 and the first fall frost by December 9, about 308 frost-free days, at Picacho 8 Se, AZ.
What growing zone is Picacho 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 Picacho?
By one simple rule (highs of 62–84° and lows of 40° or more), February, March and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Picacho getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 77% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Picacho.
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.