May is one of the warmer months of the year in Cedar Park, with average highs near 30.6°C and lows around 18°C (mean 24.3°C). It is a relatively wet time of year, averaging 114 mm of rainfall and 69% relative humidity across the period.
May is one of the warmer months of the year in Cedar Park. Across 45 years of records, the warmest May in Cedar Park was 1998 — when the month averaged 27.8°C — while the coldest was 1992 at 21.2°C. Typical May days reach 30.6°C with nights near 18°C. The long-term trend is warming, about 0.2°C per decade.
May is a relatively wet time of year in Cedar Park, averaging 114 mm of rainfall. The wettest May on record was 2015 with 321 mm, while the driest was 1998 at 20 mm.
Relative humidity in Cedar Park during May averages 69%. The most humid May was 2015 at 85%, and the least humid was 1998 at 51%.
May receives about 5.8 kWh/m²/day of solar energy in Cedar Park. The sunniest May was 2022 at 6.7 kWh/m²/day, and the cloudiest was 2015 at 4.6.
Average wind speed in Cedar Park during May is 3.2 m/s. The windiest May was 1996 at 4.5 m/s, while the calmest was 2023 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.9°C | 24.2°C | 24.7°C | 24.1°C | 25.0°C | +1.1°C |
| Avg High | 30.5°C | 30.5°C | 31.1°C | 30.1°C | 31.0°C | +0.5°C |
| Avg Low | 17.3°C | 17.8°C | 18.3°C | 18.0°C | 19.0°C | +1.7°C |
| Avg Rain | 119 mm | 110 mm | 82 mm | 136 mm | 133 mm | +15 mm |
May temperatures in Cedar Park have risen by about 1.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 5.6°C (2013) to a record high of 41.4°C (1984).
Rainfall in May is a relatively wet time of year, averaging 114 mm, with a wettest year of 321 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
One of the best times to visit Cedar Park
May is one of the best times to visit Cedar Park. Expect days averaging 30.6°C and nights around 18°C (mean 24.3°C) — warmer than Cedar Park's yearly average — with higher rainfall (114 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 32.1°C | 25.5°C | 18.9°C | 38.6°C | 12.2°C | 149 mm | 68% | 2.9 m/s | 6.2 |
| 2024 | 32.4°C | 26.6°C | 20.9°C | 38.8°C | 16.3°C | 156 mm | 75% | 2.8 m/s | 4.9 |
| 2023 | 28.6°C | 23.4°C | 18.2°C | 34.1°C | 11.8°C | 109 mm | 78% | 2 m/s | 5.5 |
| 2022 | 35.0°C | 27.7°C | 20.4°C | 39.3°C | 13.3°C | 59 mm | 61% | 3.8 m/s | 6.7 |
| 2021 | 28.0°C | 23.0°C | 18.1°C | 32.9°C | 11.6°C | 189 mm | 80% | 3.1 m/s | 4.9 |
| 2020 | 30.0°C | 23.7°C | 17.5°C | 35.6°C | 11.0°C | 138 mm | 70% | 3.1 m/s | 6.5 |
| 2019 | 28.3°C | 23.4°C | 18.5°C | 33.1°C | 10.6°C | 164 mm | 80% | 3.3 m/s | 5.2 |
| 2018 | 33.5°C | 26.5°C | 19.6°C | 38.8°C | 14.1°C | 74 mm | 64% | 3 m/s | 6.5 |
| 2017 | 30.5°C | 23.7°C | 16.8°C | 34.8°C | 10.3°C | 76 mm | 66% | 3.3 m/s | 5.7 |
| 2016 | 27.3°C | 22.4°C | 17.4°C | 30.8°C | 8.8°C | 210 mm | 81% | 2.8 m/s | 5.1 |
| 2015 🌧️ | 27.3°C | 23.2°C | 19.1°C | 30.1°C | 11.2°C | 321 mm | 85% | 3.3 m/s | 4.6 |
| 2014 | 30.3°C | 23.5°C | 16.6°C | 35.8°C | 8.5°C | 166 mm | 63% | 3.7 m/s | 6.1 |
| 2013 | 29.5°C | 23.1°C | 16.7°C | 36.0°C | 5.6°C | 106 mm | 68% | 3.6 m/s | 5.8 |
| 2012 | 30.7°C | 24.7°C | 18.7°C | 36.5°C | 13.1°C | 134 mm | 70% | 3 m/s | 6.3 |
| 2011 | 32.6°C | 25.1°C | 17.6°C | 40.0°C | 5.7°C | 50 mm | 59% | 4 m/s | 6.3 |
| 2010 | 31.1°C | 24.9°C | 18.8°C | 36.1°C | 11.8°C | 55 mm | 67% | 3.2 m/s | 5.9 |
| 2009 | 30.4°C | 24.2°C | 18.0°C | 35.8°C | 10.2°C | 54 mm | 70% | 2.7 m/s | 6.1 |
| 2008 | 32.2°C | 25.2°C | 18.3°C | 38.6°C | 10.6°C | 69 mm | 62% | 3.3 m/s | 6.2 |
| 2007 | 27.2°C | 22.5°C | 17.8°C | 31.3°C | 12.2°C | 183 mm | 80% | 2.7 m/s | 5.2 |
| 2006 | 30.4°C | 24.2°C | 17.9°C | 34.8°C | 11.1°C | 105 mm | 69% | 3.2 m/s | 6.5 |
| 2005 | 29.5°C | 23.3°C | 17.2°C | 37.1°C | 7.4°C | 117 mm | 70% | 2.8 m/s | 5.8 |
| 2004 | 30.3°C | 24.2°C | 18.1°C | 40.7°C | 8.1°C | 36 mm | 71% | 3.7 m/s | 5.6 |
| 2003 | 34.5°C | 27.3°C | 20.0°C | 39.7°C | 15.0°C | 37 mm | 59% | 3.3 m/s | 5.5 |
| 2002 | 33.1°C | 25.9°C | 18.6°C | 39.0°C | 11.1°C | 47 mm | 58% | 4 m/s | 6.2 |
| 2001 | 30.8°C | 24.5°C | 18.2°C | 36.8°C | 10.6°C | 89 mm | 70% | 3.2 m/s | 6.3 |
| 2000 | 32.3°C | 25.8°C | 19.3°C | 38.7°C | 11.9°C | 86 mm | 68% | 3.7 m/s | 6 |
| 1999 | 31.2°C | 24.7°C | 18.2°C | 35.3°C | 11.5°C | 115 mm | 68% | 3 m/s | 5.8 |
| 1998 🔥 | 36.4°C | 27.8°C | 19.3°C | 41.1°C | 13.5°C | 20 mm | 51% | 3.5 m/s | 6.5 |
| 1997 | 27.5°C | 21.8°C | 16.1°C | 32.6°C | 9.7°C | 101 mm | 78% | 2.6 m/s | 5.5 |
| 1996 | 34.2°C | 27.3°C | 20.4°C | 39.1°C | 10.3°C | 65 mm | 63% | 4.5 m/s | 5.9 |
| 1995 | 31.5°C | 24.7°C | 17.8°C | 38.3°C | 10.3°C | 183 mm | 66% | 3.3 m/s | 5.4 |
| 1994 | 28.9°C | 23.2°C | 17.6°C | 34.9°C | 8.5°C | 138 mm | 77% | 2.4 m/s | 5.5 |
| 1993 | 28.7°C | 22.3°C | 15.9°C | 34.1°C | 8.7°C | 89 mm | 72% | 3.3 m/s | 5.9 |
| 1992 ❄️ | 26.2°C | 21.2°C | 16.2°C | 34.0°C | 7.4°C | 190 mm | 81% | 2.7 m/s | 5.5 |
| 1991 | 30.1°C | 24.4°C | 18.8°C | 36.3°C | 8.3°C | 106 mm | 76% | 3 m/s | 5.1 |
| 1990 | 30.5°C | 24.3°C | 18.1°C | 36.5°C | 10.2°C | 95 mm | 71% | 3.5 m/s | 5.9 |
| 1989 | 32.3°C | 25.4°C | 18.5°C | 37.8°C | 14.1°C | 126 mm | 67% | 3.5 m/s | 5.8 |
| 1988 | 31.2°C | 23.5°C | 15.8°C | 37.8°C | 9.3°C | 100 mm | 59% | 3 m/s | 6.1 |
| 1987 | 29.2°C | 23.9°C | 18.6°C | 34.1°C | 14.3°C | 180 mm | 75% | 2.7 m/s | 5 |
| 1986 | 28.7°C | 23.0°C | 17.3°C | 33.3°C | 10.9°C | 163 mm | 74% | 3.1 m/s | 4.7 |
| 1985 | 31.0°C | 24.2°C | 17.5°C | 38.7°C | 12.7°C | 65 mm | 67% | 2.9 m/s | 6.3 |
| 1984 | 33.3°C | 25.5°C | 17.6°C | 41.4°C | 10.6°C | 50 mm | 53% | 3.7 m/s | 6 |
| 1983 | 29.9°C | 22.9°C | 16.0°C | 37.5°C | 9.8°C | 148 mm | 68% | 3.2 m/s | — |
| 1982 | 28.8°C | 23.0°C | 17.3°C | 34.6°C | 8.3°C | 130 mm | 75% | 3.3 m/s | — |
| 1981 | 30.2°C | 23.7°C | 17.1°C | 36.2°C | 10.0°C | 107 mm | 67% | 3.3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 30.6°C with lows near 18°C (mean 24.3°C), based on 45 years of NASA POWER data.
May averages 114 mm of rainfall in Cedar Park, a relatively wet time of year. The wettest on record was 321 mm in 2015.
The hottest May reached 41.4°C in 1984. The coldest dipped to 5.6°C in 2013.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.3°C. Daytime highs moved from 30.6°C to 31.2°C and overnight lows from 17.1°C to 19.3°C over the same span.
May is one of the warmer months of the year in Cedar Park and a relatively wet time of year, so plan for around 30.6°C daytime highs and 18°C at night.
Not quite — May is the 8th coolest month in Cedar Park, averaging 24.3°C.
For May in Cedar Park, pack light, breathable clothing and sun protection, with typical highs of 30.6°C and lows of 18°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 69% — moderately humid.
Average wind speed in May is 3.2 m/s. The windiest May on record averaged 4.5 m/s (1996).
The wettest May on record was 2015 with 321 mm. On average, May sees 114 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Cedar Park behaves each May, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for May specifically, along with year-by-year records and how the month has changed over the decades.
