Tracy, CA weather in May
Tracy is warm and dry in May: highs average 83°F and nights drop to about 53°F. Expect about 3 wet days. A great month for outdoor plans.
- Normal high
- 83°F
- Normal low
- 53°F
- Wet days
- 3
- 0.5 in total
- Muggy days
- 0
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 79°F | 86°F |
| Normal low | 50°F | 55°F |
| Chance of a wet day | 11% | 6% |
| Sunrise / sunset | 6:09 am / 7:55 pm | 5:45 am / 8:20 pm |
| Daylight | 13.8 h | 14.6 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical May day
- 6 am56°Fdew point 48°F
- 9 am68°Fdew point 48°F
- Noon76°Fdew point 47°F
- 3 pm80°Fdew point 46°F
- 6 pm75°Fdew point 47°F
- 9 pm63°Fdew point 48°F
NOAA hourly normals (local standard time) from Stockton Metro Airport (15 mi away); average wind 10 mph; clear or few clouds in 80% of daytime hours, mostly cloudy or overcast in 16%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F13 of 31
- Hot dayshigh 90°F or more6 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow3 of 31
- Notable rainat least 0.10 in1 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 0.5 in; a dry May brings about 0.04 in and a wet one about 0.7 in (25th and 75th percentiles). Days with half an inch or more are rare.
How May varies from year to year
- Warmest May, 1991-20202001: average high 91°F
- Coolest May1998: average high 70°F
- Wettest May1998: 3.1 in
- Driest May1992: no measurable precipitation
- Highest reading107°F (May 31, 2001)
- Lowest reading36°F (May 11, 2010)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 75°F | 83°F | 90°F |
| Normal low | 47°F | 53°F | 58°F |
| Wet days | 5 | 3 | 1 |
| Comfortable days | 19 | 13 | 4 |
| Daylight | 13.2 h | 14.2 h | 14.7 h |
Highs change by +8°F from April and +7°F into June.
Nearby alternatives in May
- Cooler: Fremont, CA34 mi · high 71°F · 3 wet days
How Tracy ranks in May
- Normal high98th warmest of 378 cities; 5th of 60 in California
- Wet days49th driest of 378
- Comfortable days159th most of 339
What to pack for Tracy in May
- Layers – afternoons near 83°F but nights near 53°F
- Sunglasses and sunscreen – about 14.2 hours of daylight and highs near 83°F
Heating and cooling
May has 41 heating degree days and 125 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Tracy in May?
The normal high is 83°F and the normal low is 53°F. From 1991 to 2020 the hottest May reading was 107°F (May 31, 2001).
Does it rain a lot in Tracy in May?
About 3 days in May have at least 0.01 in of precipitation, and the normal total is 0.5 in. The wettest May in 1991-2020 was in 1998 (3.2 in); the driest was in 1992, with no measurable precipitation.
Is May a good time to visit Tracy?
May ranks 3rd of 12 months on our comfort score for Tracy (70 out of 100). It has about 13 comfortable days and about 6 days at 90°F or hotter. The best month is April.
Where the numbers come from
- Temperature, humidity and wind by hour and cloud cover: Stockton Metro Airport (USW00023237), 15 mi NE of the city center, 26 ft . NOAA normals and daily records, 1991-2020.
- Rain, snowfall, snow depth and frost dates: Tracy Pumping Plt (USC00049001), 9.5 mi WNW of the city center, 61 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Stockton Metropolitan Airport (724920-23237), 15 mi NE of the city center, 27 ft . Hourly observations, 1991-2020.