San Jose weather in May: San Jose, California: normal highs, lows, rain and records for May
San Jose in May has a normal high of 74°F and a normal low of 52°F, a daily mean of 63°F, rising from 71°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 3 days in a normal May, 0.39 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 11°C, 10 mm of precipitation in May.
- NOAA stationSan Jose
- Station IDUSW00023293
- Location37.36°N 121.92°W
- Elevation51 ft (16 m)
- From the center7 miles
- Population997,368
- Jan 60° 42°
- Feb 62° 44°
- Mar 66° 46°
- Apr 69° 48°
- May 74° 52°
- Jun 79° 56°
- Jul 81° 58°
- Aug 81° 59°
- Sep 81° 57°
- Oct 76° 53°
- Nov 66° 46°
- Dec 60° 42°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Jose in May?
The normal high is 74°F and the normal low 52°F, for a daily mean of 63.0°F. May is 4.2°F warmer than April and 4.3°F cooler than June. May is the 6th warmest month of the year in San Jose and the 8th wettest. Across the month the normal high rises 6°F, from 71°F on May 1 to 77°F on May 31. From one year to the next May's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Mays in three average between 60°F and 66°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 13%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 71°F | 50°F | 13% | 6% |
| May 8 | 72°F | 51°F | 11% | 4% |
| May 15 | 74°F | 52°F | 9% | 3% |
| May 22 | 75°F | 53°F | 8% | 3% |
| May 31 | 77°F | 54°F | 5% | 2% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 71°F | 50°F | 13% | 6% | 13 h 40 min |
| May 2 | 72°F | 50°F | 13% | 6% | 13 h 40 min |
| May 3 | 72°F | 50°F | 13% | 5% | 13 h 50 min |
| May 4 | 72°F | 51°F | 12% | 5% | 13 h 50 min |
| May 5 | 72°F | 51°F | 12% | 5% | 13 h 50 min |
| May 6 | 72°F | 51°F | 12% | 5% | 13 h 50 min |
| May 7 | 72°F | 51°F | 11% | 4% | 13 h 50 min |
| May 8 | 72°F | 51°F | 11% | 4% | 14 h |
| May 9 | 73°F | 51°F | 11% | 4% | 14 h |
| May 10 | 73°F | 51°F | 10% | 4% | 14 h |
| May 11 | 73°F | 52°F | 10% | 4% | 14 h |
| May 12 | 73°F | 52°F | 10% | 4% | 14 h |
| May 13 | 73°F | 52°F | 10% | 3% | 14 h 10 min |
| May 14 | 73°F | 52°F | 9% | 3% | 14 h 10 min |
| May 15 | 74°F | 52°F | 9% | 3% | 14 h 10 min |
| May 16 | 74°F | 52°F | 9% | 3% | 14 h 10 min |
| May 17 | 74°F | 52°F | 9% | 3% | 14 h 10 min |
| May 18 | 74°F | 52°F | 9% | 3% | 14 h 10 min |
| May 19 | 74°F | 53°F | 8% | 3% | 14 h 20 min |
| May 20 | 74°F | 53°F | 8% | 3% | 14 h 20 min |
| May 21 | 75°F | 53°F | 8% | 3% | 14 h 20 min |
| May 22 | 75°F | 53°F | 8% | 3% | 14 h 20 min |
| May 23 | 75°F | 53°F | 7% | 3% | 14 h 20 min |
| May 24 | 75°F | 53°F | 7% | 2% | 14 h 20 min |
| May 25 | 75°F | 53°F | 7% | 2% | 14 h 20 min |
| May 26 | 76°F | 53°F | 6% | 2% | 14 h 30 min |
| May 27 | 76°F | 53°F | 6% | 2% | 14 h 30 min |
| May 28 | 76°F | 54°F | 6% | 2% | 14 h 30 min |
| May 29 | 76°F | 54°F | 6% | 2% | 14 h 30 min |
| May 30 | 76°F | 54°F | 5% | 2% | 14 h 30 min |
| May 31 | 77°F | 54°F | 5% | 2% | 14 h 30 min |
- Normal high
- 74°FMay average
- Normal low
- 52°FMay average
- Precipitation
- 0.39 inmonth total
- Days with precipitation
- 30.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 40 min to 14 h 30 minMay 1 to May 31
- Days at 70°F or more
- 21
- Days at 80°F or more
- 6
- Sunshine
- 90%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023293; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Jose in May?
On a given May day the chance of 0.01 inch or more is 9% on average, highest around May 1 (13%). In all, 0.39 in falls on 3 days of a normal May.
In a normal May in San Jose, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023293.
What are the records for May in San Jose?
The warmest May temperature on San Jose's official record (since 1893) is 102°F, on May 30, 1910; the coldest is 32°F, on May 16, 1894. The wettest May brought 2.69 in (1915).
The May mean against the 1991-2020 normal of 63.0°F: 2021 63.1°F (+0.1), 2022 63.8°F (+0.8), 2023 61.9°F (−1.1), 2024 65.0°F (+2.0), 2025 63.9°F (+0.9), 2026 63.8°F (+0.8). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.1°F | +0.1°F | 0.00 in |
| 2022 | 63.8°F | +0.8°F | 0.00 in |
| 2023 | 61.9°F | −1.1°F | 0.44 in |
| 2024 | 65.0°F | +2.0°F | 0.67 in |
| 2025 | 63.9°F | +0.9°F | 0.11 in |
| 2026 | 63.8°F | +0.8°F | 0.14 in |
Source: records: ACIS, NWS threaded record SJCthr; recent months: ACIS, station USW00023293. Records and recent months use complete months only.
How does May in San Jose compare across California?
Across the 219 places PlainClimate covers in California, May normal highs run from 58°F in Tahoma to 96°F in Needles; San Jose's is 74°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.