Fountain Hills climate

Fountain Hills Weather in August

NOAA 1991-2020 normals for Fountain Hills, 1.1 km from Fountain Hills

Average highs run from 103°F on August 1 to 101°F on August 31, and lows from 81°F to 78°F. Normal precipitation for the month is 1.33 in over about 4 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Fountain Hills, in °F, with the record for each date.6080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
102°F
Average low
80°F
Precipitation
1.33 in
Record high
117°FAug 7, 2025
Record low
65°FAug 8, 2009
Chance of a freeze
0%
Days of 90°F or more
30.6
Daylight
13 h 48 min to 12 h 53 min
Cloud cover
45%
Humidity
42%
Dew point
56°F
Wind
6.0 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Aug 1103°F81°F115°F 202674°F 200313%
Aug 2102°F81°F115°F 202671°F 200513%
Aug 3102°F81°F115°F 202670°F 200513%
Aug 4102°F81°F114°F 202473°F 200313%
Aug 5102°F81°F114°F 202573°F 200613%
Aug 6102°F81°F116°F 202572°F 201313%
Aug 7102°F81°F117°F 202571°F 201313%
Aug 8102°F81°F115°F 201265°F 200913%
Aug 9102°F81°F114°F 201269°F 201313%
Aug 10102°F81°F115°F 200370°F 201814%
Aug 11102°F81°F113°F 201270°F 201314%
Aug 12102°F80°F114°F 200771°F 202114%
Aug 13102°F80°F117°F 201270°F 201414%
Aug 14102°F80°F115°F 202070°F 200814%
Aug 15102°F80°F113°F 201570°F 200514%
Aug 16102°F80°F113°F 201371°F 200414%
Aug 17102°F80°F114°F 202069°F 202114%
Aug 18102°F80°F113°F 202068°F 201714%
Aug 19102°F80°F113°F 202071°F 200414%
Aug 20102°F80°F111°F 201969°F 201414%
Aug 21102°F79°F113°F 201968°F 200614%
Aug 22102°F79°F114°F 202667°F 201414%
Aug 23102°F79°F114°F 201168°F 201414%
Aug 24102°F79°F114°F 202066°F 200214%
Aug 25102°F79°F114°F 202666°F 200213%
Aug 26101°F79°F115°F 201165°F 200213%
Aug 27101°F79°F114°F 202670°F 200213%
Aug 28101°F78°F116°F 200968°F 200613%
Aug 29101°F78°F115°F 200770°F 201813%
Aug 30101°F78°F112°F 200773°F 200413%
Aug 31101°F78°F112°F 201171°F 200213%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Fountain Hills, in percent.0510151102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (MST).

August 1
sunrise 5:39 AM, sunset 7:27 PM
August 31
sunrise 6:00 AM, sunset 6:53 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00023190 (Fountain Hills), public domain. Records: NOAA GHCN-Daily, station USC00022782, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.