Photo: Marine 69-71 · CC BY-SA 4.0Hayden reaches 100° on about 59 days a year, more than all but 129 U.S. towns
The depth of winter brings overnight lows near 34°. The wettest month is August; the driest is June. Precipitation is light here, less than falls on 96% of U.S. towns. Comfortable outdoor weather, highs of 74–76°, belongs to March and November.
A year in Hayden at a glance
Each month’s typical high and low, and what it brings.
What stands out about Hayden’s climate
Compared with towns across the U.S., with Hayden’s place in Arizona beside it.
What a year in Hayden feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 247 frost-free days a year
In half of years the last 32° night comes by March 13 and the first by November 19. Frost and day counts come from NOAA’s station at San Carlos Reservoir, AZ, 20 miles from the town’s center, 460 ft higher.
The 2023 USDA map puts Hayden’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 11 inches of rain a year
August is the wettest month and June the driest. Rain falls on about 37 days a year. Snow is rare: about 0.0" in a normal year at Kearny, AZ, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Hayden
51% of the work is heating. Months averaging under 55° run from December through February.
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 Carlos Reservoir, AZ.
Living with Hayden’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
247 frost-free days in zone 9a. The last frost comes by Mar 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 Nov 19.
Months with highs of 62–84° and lows of 40° or more: March and November. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Hayden from natural hazards, river flooding is the largest share (83%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Hayden and similar climates
TownRatings has no climate map of the towns around Hayden yet.
Climates most like Hayden’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 |
|---|---|---|---|---|
| Hayden, AZ | 34° | 103° | 11" | 0.0" |
| Las Vegas, NV | 35° | 104° | 6" | 0.0" |
| St. George, UT | 33° | 103° | 8" | 1.2" |
| Ridgecrest, CA | 34° | 103° | 4" | 0.5" |
| Monahans, TX | 30° | 98° | 12" | 0.7" |
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 Hayden averaged 1.8° warmer than the 1900s. The biggest change is in March (+2.7°).
A bigger shift than in 78% 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 Hayden compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Hayden’s place among Arizona’s.
Hayden weather by month
Highs, lows and precipitation from NOAA’s grid at Hayden’s center; snow, wet days and snow on the ground from Kearny, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 65° | 34° | 1.4" | 0.0" | 3 | 0 | 45° – 56° |
| February | 69° | 38° | 1.3" | 0.0" | 4 | 0 | 48° – 59° |
| March | 76° | 43° | 0.9" | 0.0" | 4 | 0 | 52° – 64° |
| April | 85° | 48° | 0.4" | 0.0" | 1 | 0 | 60° – 72° |
| May | 94° | 56° | 0.2" | 0.0" | 1 | 0 | 68° – 80° |
| June | 103° | 65° | 0.1" | 0.0" | 1 | 0 | 79° – 87° |
| July | 103° | 74° | 1.5" | 0.0" | 5 | 0 | 85° – 91° |
| August | 102° | 73° | 1.8" | 0.0" | 5 | 0 | 84° – 92° |
| September | 97° | 66° | 1.1" | 0.0" | 3 | 0 | 77° – 84° |
| October | 88° | 53° | 0.8" | 0.0" | 2 | 0 | 66° – 75° |
| November | 74° | 41° | 0.7" | 0.0" | 3 | 0 | 50° – 65° |
| December | 64° | 34° | 1.2" | 0.0" | 4 | 0 | 45° – 54° |
| Year | 85° | 52° | 11.4" | 0.0" | 37 | 0 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 50° to 65°. July is the most reliable, staying within 6°.
Where Hayden’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 Hayden’s center.
- Snow: Kearny, AZ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: San Carlos Reservoir, AZ, 20 miles from the town’s center, 460 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 Hayden’s climate
What is the weather like in Hayden?
A typical July afternoon reaches 103°, a January night drops to 34°, and snow is almost unheard of. Milder January nights than 79% of U.S. towns; hotter July afternoons than all but 89 U.S. towns.
How cold does it get in Hayden in winter?
December nights average 34°. About 42 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 45°.
How much snow does Hayden get?
About 0.0 inches in a normal winter at Kearny, AZ, so most winters see none.
How hot does it get in Hayden?
July, with a typical high of 103° and a low of 74°. About 138 days a year reach 90° and 59 reach 100° (San Carlos Reservoir, AZ).
When is the first and last frost in Hayden?
In half of years the last spring frost (32°) comes by March 13 and the first fall frost by November 19, about 247 frost-free days, at San Carlos Reservoir, AZ.
What growing zone is Hayden 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 Hayden?
By one simple rule (highs of 62–84° and lows of 40° or more), March and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Hayden getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 78% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Hayden.
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.