Mateo Weather in May
Average highs run from 33°C on May 1 to 29°C on May 31, and lows from 21°C to 20°C. Normal precipitation for the month is 148 mm over about 19 wet days.
May day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 31°C
- Average low
- 20°C
- Precipitation
- 148 mm
- Record high
- 37°CMay 15, 1998
- Record low
- 11°CMay 10, 1989
- Daylight
- 12 h 39 min to 12 h 54 min
- Cloud cover
- 73%
- Humidity
- 68%
- Dew point
- 18°C
- Wind
- 8.6 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 33°C | 21°C | 35°C 1999 | 14°C 1992 | 39% |
| May 2 | 33°C | 21°C | 35°C 2003 | 14°C 1992 | 42% |
| May 3 | 33°C | 21°C | 34°C 2003 | 15°C 1992 | 43% |
| May 4 | 33°C | 21°C | 35°C 1997 | 13°C 1985 | 44% |
| May 5 | 33°C | 21°C | 35°C 1999 | 14°C 1989 | 46% |
| May 6 | 33°C | 21°C | 34°C 1964 | 14°C 1964 | 46% |
| May 7 | 32°C | 21°C | 33°C 1964 | 12°C 1964 | 48% |
| May 8 | 32°C | 21°C | 34°C 1999 | 14°C 1992 | 50% |
| May 9 | 32°C | 21°C | 34°C 1990 | 13°C 1988 | 51% |
| May 10 | 32°C | 21°C | 35°C 2008 | 11°C 1989 | 53% |
| May 11 | 32°C | 21°C | 34°C 2008 | 15°C 1967 | 54% |
| May 12 | 32°C | 21°C | 36°C 1998 | 15°C 1975 | 55% |
| May 13 | 32°C | 21°C | 36°C 1998 | 14°C 1965 | 57% |
| May 14 | 32°C | 21°C | 36°C 1998 | 14°C 1965 | 59% |
| May 15 | 31°C | 21°C | 37°C 1998 | 14°C 1989 | 62% |
| May 16 | 31°C | 21°C | 34°C 2008 | 14°C 1989 | 64% |
| May 17 | 31°C | 21°C | 33°C 2008 | 14°C 1995 | 65% |
| May 18 | 31°C | 20°C | 33°C 2021 | 13°C 1990 | 66% |
| May 19 | 31°C | 20°C | 33°C 1978 | 14°C 1988 | 69% |
| May 20 | 31°C | 20°C | 34°C 2024 | 15°C 1991 | 70% |
| May 21 | 30°C | 20°C | 33°C 2001 | 14°C 1989 | 71% |
| May 22 | 30°C | 20°C | 33°C 1992 | 15°C 1989 | 72% |
| May 23 | 30°C | 20°C | 34°C 2016 | 12°C 2016 | 73% |
| May 24 | 30°C | 20°C | 33°C 2016 | 16°C 1992 | 74% |
| May 25 | 29°C | 20°C | 32°C 1968 | 15°C 1974 | 75% |
| May 26 | 29°C | 20°C | 34°C 1997 | 15°C 1966 | 76% |
| May 27 | 29°C | 20°C | 34°C 1997 | 15°C 2007 | 76% |
| May 28 | 29°C | 20°C | 33°C 1997 | 15°C 1999 | 76% |
| May 29 | 29°C | 20°C | 33°C 2024 | 14°C 1999 | 76% |
| May 30 | 29°C | 20°C | 32°C 1997 | 12°C 1976 | 77% |
| May 31 | 29°C | 20°C | 33°C 2021 | 15°C 1999 | 77% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (CST).
- May 1
- sunrise 5:27 AM, sunset 6:06 PM
- May 31
- sunrise 5:20 AM, sunset 6:14 PM
Other months
Sources
Records: NOAA GHCN-Daily, station HO000078720, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: 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 2026-09-29. Sun and moon: computed with the NOAA solar equations and Meeus.