Climateby Month

Glendale, AZ weather in May

NOAA 1991-2020 normals and daily records · Glendale all year

In May, Glendale sees highs around 93°F and lows around 64°F: hot and dry. There are about 1 day with rain. Plan outdoor time for mornings and evenings.

Normal high
93°F
Normal low
64°F
Wet days
1
0.1 in total
Muggy days
0
dew point 65°F+

How May changes from start to finish

Normal values at the start and end of May
May 1May 31
Normal high88°F98°F
Normal low59°F68°F
Chance of a wet day3%3%
Sunrise / sunset5:40 am / 7:11 pm5:19 am / 7:32 pm
Daylight13.5 h14.2 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Arizona time (no daylight saving)).

A typical May day

  1. 6 am70°Fdew point 37°F
  2. 9 am79°Fdew point 36°F
  3. Noon88°Fdew point 33°F
  4. 3 pm93°Fdew point 31°F
  5. 6 pm92°Fdew point 31°F
  6. 9 pm86°Fdew point 32°F

NOAA hourly normals (local standard time) from Phoenix Sky Harbor Intl Airport (13 mi away); average wind 7 mph.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F1 of 31
  • Hot dayshigh 90°F or more25 of 31
  • Muggy daysdaily mean dew point 65°F or more0 of 31
  • Wet daysat least 0.01 in of rain or melted snow1 of 31
  • Notable rainat least 0.10 in0 of 31
  • Freezing nightslow 32°F or below0 of 31

Average days per May, counted from daily records for each year 1991-2020.

Rain in May

Normal precipitation is 0.1 in; a dry May brings about 0.0 in and a wet one about 0.07 in (25th and 75th percentiles). Days with half an inch or more are rare.

How May varies from year to year

  • Warmest May, 1991-20202000: average high 102°F
  • Coolest May2019: average high 87°F
  • Wettest May2015: 1.2 in
  • Driest May1991: no measurable precipitation
  • Highest reading113°F (May 29, 2000)
  • Lowest reading47°F (May 1, 1999)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

May compared with April and June

AprilMayJune
Normal high84°F93°F102°F
Normal low55°F64°F72°F
Wet days211
Comfortable days610
Daylight13.0 h13.9 h14.3 h

Highs change by +9°F from April and +9°F into June.

Nearby alternatives in May

How Glendale ranks in May

  • Normal high11th warmest of 378 cities; 6th of 13 in Arizona
  • Wet days8th driest of 378
  • Comfortable days316th most of 339

What to pack for Glendale in May

  • Light, breathable clothing – highs near 93°F
  • Layers – afternoons near 93°F but nights near 64°F

Heating and cooling

May has 2 heating degree days and 413 cooling degree days (base 65°F), 8% of the year's total heating and cooling demand.

Questions

How hot is Glendale in May?

The normal high is 93°F and the normal low is 64°F. From 1991 to 2020 the hottest May reading was 113°F (most recently on May 29, 2000).

Does it rain a lot in Glendale in May?

About 1 days in May have at least 0.01 in of precipitation, and the normal total is 0.1 in. The wettest May in 1991-2020 was in 2015 (1.2 in); the driest was in 1991, with no measurable precipitation.

Is May a good time to visit Glendale?

May ranks 8th of 12 months on our comfort score for Glendale (43 out of 100). It has about 1 comfortable day and about 25 days at 90°F or hotter. The best month is February.

Where the numbers come from

  • Temperature and frost dates: Youngtown (USC00029634), 7.7 mi WNW of the city center, 1,135 ft . NOAA normals and daily records, 1991-2020.
  • Rain and humidity and wind by hour: Phoenix Sky Harbor Intl Airport (USW00023183), 13 mi SE of the city center, 1,107 ft . NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Tempe ASU (USC00028499), 17 mi ESE of the city center, 1,167 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Phoenix Sky Harbor Intl Airport (722780-23183), 13 mi SE of the city center, 1,113 ft . Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).