Alamo Weather in May
Average highs run from 67°F on May 1 to 79°F on May 31, and lows from 37°F to 46°F. Normal precipitation for the month is 0.75 in over about 4 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
- 73°F
- Average low
- 41°F
- Precipitation
- 0.75 in
- Snowfall
- 0.1 in
- Record high
- 102°FMay 31, 2000
- Record low
- 20°FMay 2, 1967
- Chance of a freeze
- 78%
- Daylight
- 13 h 35 min to 14 h 18 min
- Cloud cover
- 40%
- Humidity
- 32%
- Dew point
- 26°F
- Wind
- 11.6 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 | 67°F | 37°F | 92°F 1995 | 26°F 1962 | 11% | 1% |
| May 2 | 67°F | 37°F | 92°F 2020 | 20°F 1967 | 11% | 1% |
| May 3 | 68°F | 37°F | 92°F 1992 | 25°F 2011 | 11% | 1% |
| May 4 | 68°F | 37°F | 90°F 1996 | 27°F 1967 | 12% | 1% |
| May 5 | 68°F | 38°F | 92°F 2000 | 30°F 1991 | 12% | 1% |
| May 6 | 69°F | 38°F | 92°F 2000 | 27°F 1964 | 12% | 1% |
| May 7 | 69°F | 38°F | 94°F 1989 | 26°F 1975 | 12% | 1% |
| May 8 | 69°F | 39°F | 96°F 2009 | 30°F 1964 | 12% | 1% |
| May 9 | 70°F | 39°F | 96°F 2009 | 29°F 1964 | 12% | 1% |
| May 10 | 70°F | 39°F | 94°F 2018 | 30°F 1959 | 13% | 1% |
| May 11 | 70°F | 39°F | 95°F 2000 | 29°F 2003 | 13% | 1% |
| May 12 | 71°F | 40°F | 93°F 1984 | 32°F 2005 | 13% | 1% |
| May 13 | 71°F | 40°F | 97°F 1996 | 32°F 1972 | 13% | 1% |
| May 14 | 72°F | 40°F | 98°F 1996 | 29°F 2014 | 13% | 1% |
| May 15 | 72°F | 41°F | 96°F 2026 | 29°F 2014 | 13% | 0% |
| May 16 | 72°F | 41°F | 96°F 1988 | 34°F 1967 | 13% | 0% |
| May 17 | 73°F | 41°F | 96°F 1996 | 31°F 1962 | 13% | 0% |
| May 18 | 73°F | 42°F | 93°F 1996 | 32°F 1983 | 14% | 0% |
| May 19 | 74°F | 42°F | 97°F 1996 | 27°F 1971 | 14% | 0% |
| May 20 | 74°F | 42°F | 98°F 1996 | 30°F 1960 | 14% | 0% |
| May 21 | 75°F | 43°F | 98°F 2005 | 31°F 1974 | 14% | 0% |
| May 22 | 75°F | 43°F | 100°F 2005 | 32°F 1962 | 14% | 0% |
| May 23 | 75°F | 43°F | 100°F 2005 | 32°F 1975 | 14% | 0% |
| May 24 | 76°F | 44°F | 100°F 2000 | 33°F 1971 | 14% | 0% |
| May 25 | 76°F | 44°F | 99°F 2000 | 33°F 1980 | 14% | 0% |
| May 26 | 77°F | 44°F | 96°F 2005 | 35°F 1960 | 14% | 0% |
| May 27 | 77°F | 45°F | 96°F 2001 | 36°F 1987 | 14% | 0% |
| May 28 | 78°F | 45°F | 98°F 2011 | 34°F 1973 | 13% | 0% |
| May 29 | 78°F | 45°F | 96°F 2000 | 37°F 1973 | 13% | 0% |
| May 30 | 78°F | 46°F | 100°F 2000 | 36°F 1980 | 13% | 0% |
| May 31 | 79°F | 46°F | 102°F 2000 | 36°F 1975 | 13% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 6:20 AM, sunset 7:55 PM
- May 31
- sunrise 5:59 AM, sunset 8:17 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00296812 (Pietown 19NE), public domain. Records: NOAA GHCN-Daily, station USC00295150, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.