Boulder City climate

Boulder City Weather in May

NOAA 1991-2020 normals for Alan Bible Visitor Ctr, 4.7 km from Boulder City

Average highs run from 86°F on May 1 to 97°F on May 31, and lows from 62°F to 71°F. Normal precipitation for the month is 0.18 in.

May day by day

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

Normal daily high and low temperature at Boulder City, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
91°F
Average low
66°F
Precipitation
0.18 in
Record high
110°FMay 13, 2026
Record low
42°FMay 23, 2021
Chance of a freeze
0%
Days of 90°F or more
17.4
Daylight
13 h 40 min to 14 h 26 min
Cloud cover
34%
Humidity
24%
Dew point
30°F
Wind
9.4 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
May 186°F62°F102°F 200746°F 2008
May 286°F62°F100°F 200646°F 2008
May 387°F62°F98°F 200654°F 2010
May 487°F63°F99°F 201458°F 2007
May 587°F63°F96°F 201754°F 2007
May 688°F63°F101°F 201748°F 2008
May 788°F63°F99°F 200949°F 2008
May 888°F64°F101°F 200952°F 2015
May 989°F64°F104°F 202648°F 2014
May 1089°F64°F108°F 201854°F 2010
May 1190°F64°F103°F 202650°F 2010
May 1290°F65°F108°F 202655°F 2010
May 1390°F65°F110°F 202658°F 2008
May 1491°F65°F102°F 200655°F 2014
May 1591°F65°F109°F 201355°F 2015
May 1691°F66°F104°F 200653°F 2021
May 1792°F66°F105°F 201449°F 2021
May 1892°F66°F105°F 200955°F 2017
May 1993°F66°F109°F 200655°F 2017
May 2093°F67°F110°F 200855°F 2021
May 2193°F67°F110°F 200851°F 2008
May 2294°F67°F105°F 200555°F 2014
May 2394°F68°F105°F 200542°F 2021
May 2494°F68°F109°F 200549°F 2021
May 2595°F68°F108°F 201750°F 2021
May 2695°F69°F108°F 201756°F 2021
May 2796°F69°F107°F 201451°F 2019
May 2896°F69°F108°F 201454°F 2021
May 2996°F70°F104°F 200558°F 2006
May 3097°F70°F103°F 201763°F 2005
May 3197°F71°F106°F 202566°F 2010

Chance of rain

Sunrise and sunset

Times for 2026, local time (PDT).

May 1
sunrise 5:47 AM, sunset 7:27 PM
May 31
sunrise 5:24 AM, sunset 7:50 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00260125 (Alan Bible Visitor Ctr), public domain. Records: NOAA GHCN-Daily, station USC00260125, 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.