Cupertino climate

Cupertino Weather in May

NOAA 1991-2020 normals for San Jose, 11.8 km from Cupertino

Average highs run from 72°F on May 1 to 78°F on May 31, and lows from 51°F to 55°F. Normal precipitation for the month is 0.54 in over about 4 wet days.

May day by day

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

Normal daily high and low temperature at Cupertino, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
75°F
Average low
53°F
Precipitation
0.54 in
Record high
103°FMay 12, 1976
Record low
38°FMay 4, 1952
Chance of a freeze
0%
Days of 90°F or more
1.5
Daylight
13 h 45 min to 14 h 34 min
Cloud cover
33%
Humidity
74%
Dew point
48°F
Wind
8.5 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
May 172°F51°F91°F 194739°F 194818%
May 273°F51°F91°F 199041°F 194817%
May 373°F52°F90°F 201740°F 194917%
May 473°F52°F88°F 199038°F 195217%
May 573°F52°F94°F 198741°F 195216%
May 673°F52°F95°F 198738°F 195016%
May 773°F52°F94°F 198742°F 195016%
May 874°F52°F91°F 200140°F 195015%
May 974°F52°F94°F 199342°F 195015%
May 1074°F52°F87°F 199343°F 194815%
May 1174°F53°F86°F 198145°F 194714%
May 1274°F53°F103°F 197643°F 194814%
May 1374°F53°F92°F 201443°F 194714%
May 1475°F53°F91°F 201442°F 194813%
May 1575°F53°F99°F 200841°F 195513%
May 1675°F53°F94°F 200841°F 194813%
May 1775°F53°F93°F 200944°F 197612%
May 1875°F54°F90°F 197843°F 197412%
May 1975°F54°F91°F 197842°F 195012%
May 2076°F54°F91°F 198844°F 194511%
May 2176°F54°F96°F 200044°F 194811%
May 2276°F54°F87°F 195444°F 200211%
May 2376°F54°F91°F 198245°F 194510%
May 2476°F55°F96°F 198245°F 194510%
May 2577°F55°F93°F 195144°F 194810%
May 2677°F55°F89°F 197442°F 19539%
May 2777°F55°F97°F 198445°F 19569%
May 2877°F55°F93°F 197545°F 19599%
May 2977°F55°F98°F 195045°F 19468%
May 3078°F55°F99°F 200144°F 19748%
May 3178°F55°F93°F 200145°F 19558%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Cupertino, in percent.051015201102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (PDT).

May 1
sunrise 6:13 AM, sunset 7:58 PM
May 31
sunrise 5:49 AM, sunset 8:23 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00047821 (San Jose), public domain. Records: NOAA GHCN-Daily, station USW00023244, 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.