Photo: Marine 69-71 · CC BY-SA 4.0Guadalupe reaches 100° on about 107 days a year, more than all but 59 U.S. towns
Nights in January average 41°. By precipitation alone, it ranks drier than almost every U.S. town. Decade by decade the climate has edged up, 2.4° above 1901–2000. Picnics, hikes and garden evenings come into their own from November to March, with highs of 66–78°.
A year in Guadalupe at a glance
Each month’s typical high and low, and what it brings.
What stands out about Guadalupe’s climate
Compared with towns across the U.S., with Guadalupe’s place in Arizona beside it.
What a year in Guadalupe feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 298 frost-free days a year
In half of years the last 32° night comes by February 13 and the first by December 5. Frost and day counts come from NOAA’s station at Tempe Asu, AZ, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Guadalupe’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 30°. 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 8 inches of rain a year
August is the wettest month and June the driest. Rain falls on about 34 days a year. Snow is rare: about 0.0" in a normal year at Mesa, AZ, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Guadalupe
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 Tempe Asu, AZ.
Living with Guadalupe’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
298 frost-free days in zone 9b. The last frost comes by Feb 13 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 5.
Months with highs of 62–84° and lows of 40° or more: January, February, March, November and December. 0.2 miles of trails are waiting.
Parks & trails →Heat waves are 74% of the yearly building losses FEMA expects in Guadalupe from natural hazards, the largest share. Normals are averages; the hazards page covers the extremes.
Natural hazards →Guadalupe and its neighbors
Every town next door is within a degree of Guadalupe in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Guadalupe’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 |
|---|---|---|---|---|
| Guadalupe, AZ | 41° | 105° | 8" | 0.0" |
| Boulder City, NV | 41° | 106° | 4" | 0.0" |
| Garnet, CA | 43° | 105° | 5" | 0.0" |
| St. George, UT | 33° | 103° | 8" | 1.2" |
| Laredo, TX | 45° | 99° | 20" | 0.1" |
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 Guadalupe averaged 2.4° warmer than the 1900s. The biggest change is in March (+3.0°).
A bigger shift than in all but 144 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 Guadalupe compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Guadalupe’s place among Arizona’s.
Guadalupe weather by month
Highs, lows and precipitation from NOAA’s grid at Guadalupe’s center; snow, wet days and snow on the ground from Mesa, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 67° | 41° | 0.9" | 0.0" | 4 | 0 | 51° – 59° |
| February | 71° | 44° | 1.0" | 0.0" | 4 | 0 | 52° – 63° |
| March | 78° | 49° | 1.0" | 0.0" | 4 | 0 | 56° – 69° |
| April | 85° | 54° | 0.2" | 0.0" | 1 | 0 | 64° – 74° |
| May | 94° | 62° | 0.1" | 0.0" | 1 | 0 | 73° – 83° |
| June | 104° | 71° | 0.0" | 0.0" | 0 | 0 | 82° – 91° |
| July | 105° | 79° | 0.9" | 0.0" | 3 | 0 | 89° – 95° |
| August | 104° | 78° | 1.0" | 0.0" | 5 | 0 | 87° – 96° |
| September | 99° | 72° | 0.6" | 0.0" | 3 | 0 | 82° – 88° |
| October | 89° | 59° | 0.5" | 0.0" | 3 | 0 | 71° – 79° |
| November | 76° | 47° | 0.6" | 0.0" | 2 | 0 | 54° – 68° |
| December | 66° | 40° | 0.8" | 0.0" | 4 | 0 | 50° – 57° |
| Year | 86° | 58° | 7.7" | 0.0" | 34 | 0 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 54° to 68°. September is the most reliable, staying within 6°.
Where Guadalupe’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 Guadalupe’s center.
- Snow: Mesa, AZ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Tempe Asu, AZ, 5 miles from the town’s center, at about the same height; 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 Guadalupe’s climate
What is the weather like in Guadalupe?
A typical July afternoon reaches 105°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 90% of U.S. towns; hotter July afternoons than all but 59 U.S. towns.
How cold does it get in Guadalupe in winter?
December nights average 40°. About 10 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 50°.
How much snow does Guadalupe get?
About 0.0 inches in a normal winter at Mesa, AZ, so most winters see none.
How hot does it get in Guadalupe?
July, with a typical high of 105° and a low of 79°. About 179 days a year reach 90° and 107 reach 100° (Tempe Asu, AZ).
When is the first and last frost in Guadalupe?
In half of years the last spring frost (32°) comes by February 13 and the first fall frost by December 5, about 298 frost-free days, at Tempe Asu, AZ.
What growing zone is Guadalupe in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 30°.
What is the best time of year to visit Guadalupe?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Guadalupe getting warmer?
Yes: 1991–2020 averaged 2.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than all but 144 U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Guadalupe.
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.