Photo: Phillip Capper from Wellington, New Zealand · CC BY 2.0Naco reaches 100° on about 35 days a year, more than 98% of U.S. towns
January mornings start at about 32°. It is a dry place: less rain and snow fall here than on 94% of U.S. towns. The latest 30-year average runs 1.7° warmer than 1901–2000’s, with March up the most. If you like long walks, April and October offer highs of 78–80°.
A year in Naco at a glance
Each month’s typical high and low, and what it brings.
What stands out about Naco’s climate
Compared with towns across the U.S., with Naco’s place in Arizona beside it.
What a year in Naco feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 215 frost-free days a year
In half of years the last 32° night comes by April 6 and the first by November 10. Frost and day counts come from NOAA’s station at Mc Neal, AZ, 23 miles from the town’s center, 430 ft lower.
The 2023 USDA map puts Naco’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 16°. 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 3 inches of snow a winter
Snow, measured at Bisbee 1wnw, AZ, falls mostly in January. Precipitation (rain plus melted snow) adds up to 14 inches a year; August is the wettest month and May the driest. Rain or snow falls on about 60 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Naco
54% 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 Mc Neal, AZ.
Living with Naco’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
215 frost-free days in zone 8b. 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 10.
Months with highs of 62–84° and lows of 40° or more: April and October. 5.6 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Naco from natural hazards, river flooding is the largest share (63%); heat waves, cold waves, winter storms and ice storms together are 20%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Naco and similar climates
TownRatings has no climate map of the towns around Naco yet.
Climates most like Naco’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 |
|---|---|---|---|---|
| Naco, AZ | 32° | 92° | 14" | 3.3" |
| Talent, OR | 31° | 92° | 19" | 3.6" |
| College Place, WA | 30° | 91° | 15" | 7.2" |
| Alpine, TX | 30° | 90° | 15" | 2.2" |
| North Hobbs, NM | 27° | 94° | 15" | 1.8" |
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 Naco averaged 1.7° warmer than the 1900s. The biggest change is in March (+2.5°).
A bigger shift than in 70% 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 Naco compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Naco’s place among Arizona’s.
Naco weather by month
Highs, lows and precipitation from NOAA’s grid at Naco’s center; snow, wet days and snow on the ground from Bisbee 1wnw, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 61° | 32° | 0.9" | 1.4" | 5 | 0 | 42° – 51° |
| February | 65° | 35° | 0.8" | 0.4" | 5 | 0 | 44° – 55° |
| March | 71° | 39° | 0.6" | 0.6" | 3 | 0 | 50° – 60° |
| April | 78° | 44° | 0.2" | 0.1" | 1 | 0 | 56° – 66° |
| May | 86° | 52° | 0.2" | 0.0" | 1 | 0 | 62° – 73° |
| June | 95° | 61° | 0.5" | 0.0" | 3 | 0 | 73° – 81° |
| July | 92° | 66° | 3.5" | 0.0" | 14 | 0 | 75° – 82° |
| August | 90° | 65° | 3.5" | 0.0" | 13 | 0 | 75° – 83° |
| September | 88° | 59° | 1.7" | 0.0" | 7 | 0 | 70° – 76° |
| October | 80° | 48° | 0.7" | 0.0" | 4 | 0 | 61° – 68° |
| November | 70° | 38° | 0.7" | 0.2" | 3 | 0 | 47° – 61° |
| December | 61° | 31° | 1.0" | 0.6" | 4 | 1 | 42° – 50° |
| Year | 78° | 47° | 14.1" | 3.3" | 60 | 1 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 47° to 61°. September is the most reliable, staying within 6°.
Where Naco’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 Naco’s center.
- Snow: Bisbee 1wnw, AZ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mc Neal, AZ, 23 miles from the town’s center, 430 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 Naco’s climate
What is the weather like in Naco?
A typical July afternoon reaches 92°, a January night drops to 32°, and about 3 inches of snow falls in a normal winter. Milder January nights than 75% of U.S. towns; hotter July afternoons than 87% of U.S. towns.
How cold does it get in Naco in winter?
December nights average 31°. About 63 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 42°.
How much snow does Naco get?
About 3.3 inches in a normal winter at Bisbee 1wnw, AZ, most of it in January, with snow on the ground about 1 days a year.
How hot does it get in Naco?
July, with a typical high of 92° and a low of 66°. About 131 days a year reach 90° and 35 reach 100° (Mc Neal, AZ).
When is the first and last frost in Naco?
In half of years the last spring frost (32°) comes by April 6 and the first fall frost by November 10, about 215 frost-free days, at Mc Neal, AZ.
What growing zone is Naco in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 16°.
What is the best time of year to visit Naco?
By one simple rule (highs of 62–84° and lows of 40° or more), April and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Naco getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 70% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Naco.
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.