Santa Clara County Weather in May
Average highs run from 59°F on May 1 to 66°F on May 31, and lows from 44°F to 51°F. Normal precipitation for the month is 1.30 in over about 6 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 62°F
- Average low
- 47°F
- Precipitation
- 1.30 in
- Record high
- 102°FMay 30, 1910
- Record low
- 32°FMay 10, 1896
- Chance of a freeze
- 48%
- Daylight
- 13 h 44 min to 14 h 33 min
- Cloud cover
- 33%
- Humidity
- 63%
- Dew point
- 46°F
- Wind
- 8.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| May 1 | 59°F | 44°F | 96°F 1947 | 34°F 1893 | 22% | 2% |
| May 2 | 59°F | 44°F | 92°F 1996 | 33°F 1894 | 22% | 2% |
| May 3 | 59°F | 44°F | 90°F 1992 | 34°F 1894 | 22% | 2% |
| May 4 | 59°F | 45°F | 94°F 1990 | 36°F 1902 | 21% | 2% |
| May 5 | 60°F | 45°F | 98°F 1987 | 38°F 1920 | 21% | 1% |
| May 6 | 60°F | 45°F | 99°F 1987 | 38°F 1896 | 21% | 1% |
| May 7 | 60°F | 45°F | 100°F 1987 | 35°F 1897 | 20% | 1% |
| May 8 | 60°F | 46°F | 98°F 2001 | 38°F 1897 | 20% | 1% |
| May 9 | 61°F | 46°F | 95°F 1931 | 35°F 1896 | 20% | 1% |
| May 10 | 61°F | 46°F | 96°F 1941 | 32°F 1896 | 19% | 1% |
| May 11 | 61°F | 46°F | 96°F 1934 | 37°F 1909 | 19% | 1% |
| May 12 | 61°F | 47°F | 99°F 1976 | 35°F 1896 | 19% | 1% |
| May 13 | 62°F | 47°F | 99°F 1976 | 37°F 1896 | 18% | 1% |
| May 14 | 62°F | 47°F | 94°F 1905 | 37°F 1896 | 18% | 0% |
| May 15 | 62°F | 47°F | 97°F 1927 | 37°F 1896 | 18% | 0% |
| May 16 | 62°F | 48°F | 98°F 1956 | 32°F 1894 | 18% | 0% |
| May 17 | 63°F | 48°F | 100°F 1997 | 32°F 1896 | 18% | 0% |
| May 18 | 63°F | 48°F | 100°F 1997 | 36°F 1893 | 17% | 0% |
| May 19 | 63°F | 48°F | 93°F 1931 | 35°F 1896 | 17% | 0% |
| May 20 | 63°F | 48°F | 97°F 1988 | 33°F 1895 | 17% | 0% |
| May 21 | 64°F | 49°F | 97°F 2000 | 32°F 1895 | 16% | 0% |
| May 22 | 64°F | 49°F | 96°F 2000 | 34°F 1895 | 16% | 0% |
| May 23 | 64°F | 49°F | 99°F 1943 | 35°F 1895 | 16% | 0% |
| May 24 | 64°F | 49°F | 96°F 1982 | 37°F 1896 | 15% | 0% |
| May 25 | 65°F | 50°F | 95°F 1951 | 39°F 1893 | 15% | 0% |
| May 26 | 65°F | 50°F | 95°F 1896 | 38°F 1911 | 15% | 0% |
| May 27 | 65°F | 50°F | 101°F 1984 | 40°F 1911 | 14% | 0% |
| May 28 | 65°F | 50°F | 97°F 1984 | 41°F 1927 | 14% | 0% |
| May 29 | 66°F | 50°F | 99°F 1950 | 36°F 1895 | 13% | 0% |
| May 30 | 66°F | 51°F | 102°F 1910 | 35°F 1893 | 13% | 0% |
| May 31 | 66°F | 51°F | 101°F 2001 | 37°F 1893 | 13% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 6:12 AM, sunset 7:56 PM
- May 31
- sunrise 5:48 AM, sunset 8:21 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00045933 (Mt Hamilton), public domain. Records: NOAA GHCN-Daily, station USC00047821, 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.