Weather StoryAlmanac, microseasons, and the day's weather story.

Fountain Hills, Arizona Weather

The monsoon settles in. Day 15 of summer. Read this microseason across nine climate regions →

Fountain Hills weather forecast — hour by hour, 7-day outlook, NOAA radar

Fountain Hills, AZ
Sunday, July 5 at 7:03 AM
89
°
Partly Cloudy
Feels like
84°
Humidity
16%
Wind
4 mph
Sunrise
10:22 PM
Sunset
12:40 PM
Fountain Hills, AZ
Hour by hour · 24h
24-Hour ForecastFountain Hills, AZ: 24-hour forecast. Temperatures range from 86 to 108 degrees Fahrenheit.
L 86°H 108°
Fountain Hills, AZ
7-day forecast
  1. Today
    Jul 5
    Overcast
    —
    —
    108°84°—
  2. Monday
    Jul 6
    Overcast
    —
    —
    109°86°+1°
  3. Tuesday
    Jul 7
    Partly Cloudy
    —
    —
    108°85°-1°
  4. Wednesday
    Jul 8
    Clear
    —
    —
    108°86°0°
  5. Thursday
    Jul 9
    Clear
    —
    —
    107°84°-1°
  6. Friday
    Jul 10
    Partly Cloudy
    —
    —
    105°82°-2°
  7. Saturday
    Jul 11
    Overcast
    —
    —
    105°86°0°
Fountain Hills, AZ
Next 24 hours · Warm now
HOT 90°80°98°115°12a6a12p6pnow 89°high 108°low 86°
Fountain Hills, AZ
Anemometer · 24h winds · from true
NESW
From · True
SW
219° · veering 52°
Direction
SW
219°
Sustained
4
mph
Gust
8
mph
Peak 24h
18
avg 6
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 6 · pk 18 @ 5:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 154SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 52° from the sw.
Fountain Hills, AZ
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
948.9
+1.0 mb in 3h · rising · 28.02 inHg
Now
948.9
mb
3h
+1.0
mb
12h
-0.3
mb
24h
-2.4
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 948–952
940945950955960-21h-18h-15h-12h-9h-6h-3h-24hNOW952.4947.5948.9
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Fountain Hills, AZ
Air quality
53
AQI
Moderate
→+1 in 6h

AQI 53 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 13.9 µg/m³, PM10 at 38.9 µg/m³ — typical background levels with no transport signature.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERModerate
13.9μg/m³
PM 10Good
39μg/m³
NO₂Good
7μg/m³
OzoneModerate
74μg/m³
UV IndexLow
0.3

What's driving it

Ozone × UV × Sky

Ozone at AQI 35. Overcast through the UV peak window (cloud cover ~86%) — afternoon ozone should stay flat.

Present
AQI 35
UV peak
1.0 at 1 PM
Sky at peak
overcast
Projected peak
AQI 4

PM × Wind × Precip

PM2.5 at 13.9 µg/m³, PM10 at 38.9 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.36
Wind
calm
Recent rain
0h in last 6h
Pattern
background

Trends

Seven days of AQI and PM2.5.

Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³300
Fountain Hills, AZ
Sky cover · visibility · 24h
Cloud cover
72%
MOSTLY CLOUDY
100%0%−24h−18h−12h−6hnow
Visibility
181.0mi
UNLIMITED
185 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
14:03 UTC · Fountain Hills, AZ · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
14:03 UTC · Fountain Hills, AZ · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Fountain Hills, AZ
Satellite · infrared · animated
Fountain Hills, AZ
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Fountain Hills, AZ
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:54 AM
Sunrise
10:22 PM
Daylight
14h 18m
Sunset
12:40 PM
Civil dusk
8:10 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Fountain Hills, AZ
The moon
Waning Gibbous
72% illuminated
Moonrise
10:43 PM
Moonset
10:45 AM
In sign
♓︎ Pisces
Fountain Hills, AZ
Microseason
Jul 1–5

The monsoon settles in

insect
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Fountain Hills at a glance

  • Today vs. normal: 11°F above the seasonal normal for this latitude
  • Last frost: March 9 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 85268

16-Day Forecast — Fountain Hills

  1. Sun108°85°5%
  2. Mon109°86°2%
  3. Tue108°85°0%
  4. Wed108°86°0%
  5. Thu107°84°2%
  6. Fri105°82°3%
  7. Sat105°86°2%
  8. Sun104°82°12%
  9. Mon111°82°20%
  10. Tue104°78°18%
  11. Wed102°76°15%
  12. Thu107°83°32%
  13. Fri115°88°32%
  14. Sat114°91°39%
  15. Sun110°88°38%
  16. Mon112°92°35%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

January 1–5: Desert awakens in still light.January 6–10: Moisture lingers beneath the crust.January 11–15: First warmth breaks the shallow freeze.January 16–20: Quail begin their territorial chorus.January 21–25: Buds swell beneath the hard sun.January 26–31: Winter reaches its brightest point.February 1–5: Gold floods the bajada.February 6–10: Wildflower bloom spreads upslope.February 11–15: Hummingbirds stake territory claims.February 16–20: Sonoran wildflowers reach peak diversity.February 21–25: Rain clouds gather on the horizon.February 26–28: Late winter warmth intensifies.March 1–5: Green reaches from the roots upward.March 6–10: Desert creatures wake fully from dormancy.March 11–15: Saguaro flowers crown the desert.March 16–20: Caterpillars turn to wings.March 21–25: Equinox ignites the blooms.March 26–31: Saguaro crowns with flowers.April 1–5: Pre-monsoon heat begins.April 6–10: Brittlebush carpets the desert floor.April 11–15: Heat dome settles in hard.April 16–20: Saguaro fruit splits open red.April 21–25: Monsoon moisture approaches.April 26–30: Last frost recedes to memory.May 1–5: Monsoon signal fires light skies.May 6–10: First haboobs roll across.May 11–15: Heat reaches extremes daily.May 16–20: Saguaro crowns open white.May 21–25: Summer arrives in dust and lightning.May 26–31: Voices rise in monsoon dark.June 1–5: Heat hardens the dust.June 6–10: Monsoon shadows gather.June 11–15: The dry breath stills.June 16–20: The first anvil tops.June 21–25: Haboob rises from the basin.June 26–30: Monsoon doors creak open.July 1–5: The monsoon settles in.July 6–10: Verdant eruption.July 11–15: The lightning oracle speaks.July 16–20: Young raptors claim the thermal.July 21–25: Humidity weight.July 26–31: Storm chambers fruit.August 1–5: The monsoon exhales.August 6–10: The long drought renews.August 11–15: Currents turn cool and distant.August 16–20: Cicada chorus deepens.August 21–25: Monsoon's final breath.August 26–31: Heat begins to relent.September 1–5: Harvest moon over stone.September 6–10: Dew returns to the flats.September 11–15: Raptors ride the thermals.September 16–20: Equinox evening shadow.September 21–25: Thunder finally silent.September 26–30: Insects burrow deep.October 1–5: Desert dries to deep gold.October 6–10: Sandhill cranes return.October 11–15: Brittle beauty blooms.October 16–20: Frost paints stones white.October 21–25: First killing frost falls.October 26–31: Winter rains whisper in.November 1–5: Mesquite leaves turn gold.November 6–10: Ocotillo stands sentinel.November 11–15: First frost traces ridges.November 16–20: Saguaro stands naked.November 21–25: Pacific storms break the drought.November 26–30: North wind strips the way.December 1–5: Desert deepens into winter.December 6–10: True winter arrives.December 11–15: The shortest day looms.December 16–20: Solstice stillness settles.December 21–25: The sun turns north.December 26–31: Year's end in silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

The monsoon settles in

Afternoon thunderstorms now daily ritual. Rains transform the desert green within 72 hours. Dust clears; air smells alive. Microburst winds flatten entire sections of mesquite.

Day 186 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
Marchlettuce, peas, spinach, radishes—
Aprillettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
July—tomatoes, beans, summer squash
August—tomatoes, beans, summer squash
September—tomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
Novemberfall brassicas, garlic (overwinter), carrots—
December——

A year in weather

In Fountain Hills, July runs warmest near 92°F and December coldest around 53°F, while February is the wettest month (1.5 inches) and June the driest (0.1 inches).

MonthMean tempPrecipRainy days
January54°1.4″2
February56°1.5″3
March62°1.3″1
April69°0.4″1
May78°0.2″1
June87°0.1″0
July92°1.2″2
August92°1.3″3
September86°1.1″2
October74°0.6″1
November62°0.8″1
December53°1.1″3

Regional context

In Fountain Hills, NOAA NCEI 1991-2020 normals put January near 54°F and July near 92°F — a 38°F seasonal arc — with about 10.8 inches of precipitation over 20 rainy or snowy days.

Precipitation in Fountain Hills peaks in the cool season: February averages 1.5 inches across 2.6 storm-fed days, while June bottoms out at 0.1 inches over just 0.2 rainy days. It is a winter-storm rhythm Fountain Hills shares with places like Scottsdale, AZ, Rio Verde, AZ and Paradise Valley, AZ.

Hard freezes are rare in Fountain Hills: the coldest month averages 53°F, so Fountain Hills's growing window runs most of the year. July is the hottest stretch near 92°F, pushing cool-season crops to the milder shoulder months. Across Fountain Hills, elevation and tree cover drive a 4-7°F spread in Fountain Hills's overnight lows.

Similar climates: Scottsdale, AZ, Rio Verde, AZ, Paradise Valley, AZ, Mesa, AZ, Carefree, AZ.

Frequently asked

When does it freeze in Fountain Hills?
Fountain Hills's last spring frost lands near mid-March, and in Fountain Hills the first fall frost follows around mid-December.
What is the rainy season in Fountain Hills?
Rainfall in Fountain Hills peaks in February near 1.5 inches, out of about 11 inches annually.
What is the warmest month in Fountain Hills?
On average July tops the year in Fountain Hills at about 92°F.
What is the coldest month in Fountain Hills?
The coldest stretch in Fountain Hills falls in December, around 53°F on average.
When can I start a vegetable garden in Fountain Hills?
Around mid-March, start frost-hardy crops in Fountain Hills; tomatoes and basil belong a fortnight later.
How many rainy days does Fountain Hills get?
Fountain Hills records around 20 days of measurable precipitation annually.
What hardiness zone is Fountain Hills?
With December around 53°F, Fountain Hills's zone reflects that minimum — the USDA ZIP map confirms Fountain Hills's band.
What is the 10-day forecast for Fountain Hills?
Fountain Hills's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Fountain Hills?
See this week's day-by-day rain chances for Fountain Hills in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Fountain Hills?
Current conditions for Fountain Hills and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Fountain Hills forecast updated?
The Fountain Hills forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Fountain Hills?
Today's sunrise and sunset times for Fountain Hills are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Fountain Hills?
The next few days in Fountain Hills's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Set in a hot desert zone, Fountain Hills, Arizona swings from 54°F in the heart of winter to 92°F at midsummer — a 38°F arc.

Rain and snow bring Fountain Hills roughly 11 inches a year across approximately 20 measurable-precipitation days.

Fountain Hills sits at 33.6°N; that 38°F seasonal swing frames planting windows and frost dates across Fountain Hills.

All cities in Arizona →

Scottsdale, AZ weather →

ZIP codes in Fountain Hills

  • 85268
  • 85269

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.