Tustin weather in May: Tustin, California: normal highs, lows, rain and records for May
Tustin in May has a normal high of 77°F and a normal low of 55°F, a daily mean of 66°F, rising from 76°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 2 days in a normal May, 0.32 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 13°C, 8 mm of precipitation in May.
- NOAA stationTustin Irvine Ranch
- Station IDUSC00049087
- Location33.70°N 117.75°W
- Elevation235 ft (72 m)
- From the center4 miles
- Population78,863
- Jan 68° 43°
- Feb 69° 45°
- Mar 72° 48°
- Apr 74° 50°
- May 77° 55°
- Jun 80° 58°
- Jul 85° 61°
- Aug 87° 63°
- Sep 87° 61°
- Oct 84° 55°
- Nov 76° 47°
- Dec 70° 43°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Tustin in May?
The normal high is 77°F and the normal low 55°F, for a daily mean of 65.6°F. May is 3.7°F warmer than April and 3.3°F cooler than June. May is the 6th warmest month of the year in Tustin and the 8th wettest. Across the month the normal high rises 1°F, from 76°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 63°F and 68°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 7%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 76°F | 52°F | 7% | 5% |
| May 8 | 76°F | 53°F | 6% | 4% |
| May 15 | 77°F | 55°F | 5% | 3% |
| May 22 | 77°F | 56°F | 4% | 3% |
| May 31 | 77°F | 57°F | 3% | 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 | 76°F | 52°F | 7% | 5% | 13 h 30 min |
| May 2 | 76°F | 52°F | 7% | 5% | 13 h 30 min |
| May 3 | 76°F | 52°F | 7% | 5% | 13 h 30 min |
| May 4 | 76°F | 52°F | 6% | 4% | 13 h 40 min |
| May 5 | 76°F | 53°F | 6% | 4% | 13 h 40 min |
| May 6 | 76°F | 53°F | 6% | 4% | 13 h 40 min |
| May 7 | 76°F | 53°F | 6% | 4% | 13 h 40 min |
| May 8 | 76°F | 53°F | 6% | 4% | 13 h 40 min |
| May 9 | 76°F | 53°F | 6% | 4% | 13 h 40 min |
| May 10 | 76°F | 54°F | 6% | 4% | 13 h 50 min |
| May 11 | 76°F | 54°F | 6% | 4% | 13 h 50 min |
| May 12 | 77°F | 54°F | 6% | 4% | 13 h 50 min |
| May 13 | 77°F | 54°F | 6% | 4% | 13 h 50 min |
| May 14 | 77°F | 54°F | 6% | 4% | 13 h 50 min |
| May 15 | 77°F | 55°F | 5% | 3% | 13 h 50 min |
| May 16 | 77°F | 55°F | 5% | 3% | 13 h 50 min |
| May 17 | 77°F | 55°F | 5% | 3% | 14 h |
| May 18 | 77°F | 55°F | 5% | 3% | 14 h |
| May 19 | 77°F | 55°F | 5% | 3% | 14 h |
| May 20 | 77°F | 55°F | 5% | 3% | 14 h |
| May 21 | 77°F | 56°F | 5% | 3% | 14 h |
| May 22 | 77°F | 56°F | 4% | 3% | 14 h |
| May 23 | 77°F | 56°F | 4% | 2% | 14 h |
| May 24 | 77°F | 56°F | 4% | 2% | 14 h 10 min |
| May 25 | 77°F | 56°F | 4% | 2% | 14 h 10 min |
| May 26 | 77°F | 56°F | 4% | 2% | 14 h 10 min |
| May 27 | 77°F | 56°F | 4% | 2% | 14 h 10 min |
| May 28 | 77°F | 57°F | 4% | 2% | 14 h 10 min |
| May 29 | 77°F | 57°F | 3% | 2% | 14 h 10 min |
| May 30 | 77°F | 57°F | 3% | 2% | 14 h 10 min |
| May 31 | 77°F | 57°F | 3% | 2% | 14 h 10 min |
- Normal high
- 77°FMay average
- Normal low
- 55°FMay average
- Precipitation
- 0.32 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 30 min to 14 h 10 minMay 1 to May 31
- Days at 70°F or more
- 26
- Days at 80°F or more
- 9
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00049087; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Tustin in May?
On a given May day the chance of 0.01 inch or more is 5% on average, highest around May 1 (7%). In all, 0.32 in falls on 2 days of a normal May.
In a normal May in Tustin, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00049087.
What are the records for May in Tustin?
The warmest May temperature on this station's record (since 1915) is 105°F, on May 20, 1942; the coldest is 35°F, on May 10, 1922. The wettest May brought 2.52 in (1921).
Source: records: ACIS, station USC00049087. Records and recent months use complete months only.
How does May in Tustin 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; Tustin's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.