May is one of the warmer months of the year in Amarillo, with average highs near 28.1°C and lows around 12.2°C (mean 20.2°C). It is a relatively wet time of year, averaging 69 mm of rainfall and 48% relative humidity across the period.
May is one of the warmer months of the year in Amarillo. Across 45 years of records, the warmest May in Amarillo was 1996 — when the month averaged 24.5°C — while the coldest was 2015 at 17.6°C. Typical May days reach 28.1°C with nights near 12.2°C. The long-term trend is warming, about 0.2°C per decade.
May is a relatively wet time of year in Amarillo, averaging 69 mm of rainfall. The wettest May on record was 2015 with 224 mm, while the driest was 2011 at 6 mm.
Relative humidity in Amarillo during May averages 48%. The most humid May was 2015 at 65%, and the least humid was 2011 at 25%.
May receives about 6.9 kWh/m²/day of solar energy in Amarillo. The sunniest May was 2011 at 8.1 kWh/m²/day, and the cloudiest was 1995 at 6.
Average wind speed in Amarillo during May is 3.9 m/s. The windiest May was 1988 at 4.7 m/s, while the calmest were 2001 and 2006 at 3.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.7°C | 19.9°C | 20.5°C | 20.1°C | 20.8°C | +1.1°C |
| Avg High | 27.5°C | 27.7°C | 28.7°C | 28.3°C | 28.7°C | +1.2°C |
| Avg Low | 11.9°C | 12.0°C | 12.4°C | 12.0°C | 13.0°C | +1.1°C |
| Avg Rain | 73 mm | 72 mm | 52 mm | 65 mm | 95 mm | +22 mm |
May temperatures in Amarillo have risen by about 1°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -1.2°C (2013) to a record high of 40°C (1996).
Rainfall in May is a relatively wet time of year, averaging 69 mm, with a wettest year of 224 mm.
One of the best times to visit Amarillo
May is one of the best times to visit Amarillo. Expect days averaging 28.1°C and nights around 12.2°C (mean 20.2°C) — warmer than Amarillo's yearly average — with moderate rainfall (69 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 | 26.7°C | 19.1°C | 11.5°C | 36.2°C | 5.4°C | 102 mm | 52% | 3.4 m/s | 6.9 |
| 2024 | 29.9°C | 21.8°C | 13.8°C | 37.3°C | 10.0°C | 76 mm | 46% | 4 m/s | 7.2 |
| 2023 | 27.3°C | 20.4°C | 13.6°C | 35.5°C | 7.7°C | 204 mm | 60% | 3.5 m/s | 6.7 |
| 2022 | 31.6°C | 22.4°C | 13.2°C | 39.1°C | 3.7°C | 47 mm | 36% | 4.4 m/s | 7.5 |
| 2021 | 26.5°C | 19.5°C | 12.5°C | 35.7°C | 6.1°C | 119 mm | 61% | 4.3 m/s | 6.2 |
| 2020 | 30.4°C | 21.9°C | 13.3°C | 38.0°C | 5.4°C | 21 mm | 43% | 3.8 m/s | 7.3 |
| 2019 | 26.1°C | 18.8°C | 11.5°C | 32.4°C | 4.5°C | 99 mm | 58% | 3.8 m/s | 6.2 |
| 2018 | 33.0°C | 24.4°C | 15.9°C | 38.1°C | 7.6°C | 24 mm | 40% | 4 m/s | 7.4 |
| 2017 | 27.8°C | 19.2°C | 10.6°C | 36.1°C | 1.6°C | 28 mm | 44% | 4 m/s | 7.5 |
| 2016 | 26.7°C | 18.9°C | 11.1°C | 33.8°C | 2.7°C | 51 mm | 52% | 3.9 m/s | 6.9 |
| 2015 ❄️ 🌧️ | 24.5°C | 17.6°C | 10.7°C | 30.5°C | 3.7°C | 224 mm | 65% | 3.7 m/s | 6.1 |
| 2014 | 28.3°C | 20.1°C | 11.8°C | 36.8°C | 2.6°C | 87 mm | 39% | 3.7 m/s | 7.2 |
| 2013 | 29.1°C | 20.3°C | 11.6°C | 37.5°C | -1.2°C | 28 mm | 38% | 4 m/s | 7.2 |
| 2012 | 30.1°C | 21.7°C | 13.3°C | 38.2°C | 7.0°C | 45 mm | 40% | 3.6 m/s | 7.2 |
| 2011 | 29.8°C | 20.7°C | 11.6°C | 39.6°C | 2.3°C | 6 mm | 25% | 4.3 m/s | 8.1 |
| 2010 | 27.2°C | 19.5°C | 11.7°C | 34.7°C | 4.3°C | 56 mm | 50% | 4.2 m/s | 7.2 |
| 2009 | 27.1°C | 19.4°C | 11.7°C | 35.8°C | 6.7°C | 30 mm | 51% | 3.5 m/s | 6.3 |
| 2008 | 28.4°C | 20.0°C | 11.6°C | 36.9°C | 2.3°C | 60 mm | 42% | 4.2 m/s | 7.3 |
| 2007 | 24.7°C | 18.0°C | 11.4°C | 30.9°C | 7.7°C | 87 mm | 64% | 3.4 m/s | 6.6 |
| 2006 | 30.8°C | 22.4°C | 14.0°C | 38.6°C | 4.6°C | 44 mm | 41% | 3.3 m/s | 7.2 |
| 2005 | 26.4°C | 19.2°C | 12.0°C | 36.6°C | 1.0°C | 64 mm | 58% | 3.4 m/s | 6.2 |
| 2004 | 30.9°C | 22.1°C | 13.2°C | 37.8°C | 3.1°C | 10 mm | 38% | 4.3 m/s | 7.7 |
| 2003 | 29.7°C | 21.1°C | 12.6°C | 39.0°C | 6.4°C | 24 mm | 42% | 4 m/s | 7.2 |
| 2002 | 29.5°C | 20.7°C | 11.8°C | 36.3°C | 2.4°C | 48 mm | 42% | 4.4 m/s | 7.2 |
| 2001 | 27.7°C | 20.0°C | 12.2°C | 33.7°C | 4.8°C | 124 mm | 57% | 3.3 m/s | 7 |
| 2000 | 31.3°C | 22.4°C | 13.5°C | 39.7°C | 5.7°C | 34 mm | 38% | 4.2 m/s | 7.4 |
| 1999 | 25.4°C | 18.0°C | 10.5°C | 32.6°C | 3.0°C | 91 mm | 55% | 3.8 m/s | 6.9 |
| 1998 | 31.2°C | 22.4°C | 13.6°C | 38.9°C | 7.3°C | 20 mm | 38% | 3.8 m/s | 7.3 |
| 1997 | 25.7°C | 18.2°C | 10.7°C | 34.0°C | 1.8°C | 83 mm | 59% | 3.5 m/s | 6.8 |
| 1996 🔥 | 33.5°C | 24.5°C | 15.5°C | 40.0°C | 6.6°C | 28 mm | 34% | 4.4 m/s | 7.1 |
| 1995 | 25.7°C | 18.2°C | 10.6°C | 35.5°C | 6.1°C | 125 mm | 51% | 4.2 m/s | 6 |
| 1994 | 27.0°C | 19.8°C | 12.5°C | 34.7°C | 1.1°C | 78 mm | 61% | 3.4 m/s | 6.5 |
| 1993 | 26.9°C | 19.1°C | 11.2°C | 32.4°C | 2.4°C | 56 mm | 52% | 3.8 m/s | 6.6 |
| 1992 | 25.1°C | 18.3°C | 11.4°C | 35.2°C | 3.4°C | 107 mm | 60% | 3.4 m/s | 6.2 |
| 1991 | 29.6°C | 21.4°C | 13.2°C | 36.5°C | 3.3°C | 89 mm | 47% | 4.3 m/s | 6.8 |
| 1990 | 27.4°C | 19.0°C | 10.5°C | 36.3°C | 3.1°C | 37 mm | 42% | 4.1 m/s | 6.8 |
| 1989 | 29.8°C | 21.4°C | 13.1°C | 38.2°C | 5.5°C | 79 mm | 48% | 3.9 m/s | 6.4 |
| 1988 | 26.4°C | 19.0°C | 11.6°C | 35.4°C | 3.3°C | 110 mm | 49% | 4.7 m/s | 6.8 |
| 1987 | 25.9°C | 19.3°C | 12.7°C | 32.3°C | 6.9°C | 136 mm | 60% | 3.6 m/s | 6.3 |
| 1986 | 27.6°C | 19.5°C | 11.5°C | 35.9°C | 5.3°C | 83 mm | 45% | 3.6 m/s | 6.6 |
| 1985 | 28.1°C | 20.4°C | 12.8°C | 36.5°C | 6.0°C | 68 mm | 50% | 3.4 m/s | 7.4 |
| 1984 | 29.7°C | 21.1°C | 12.4°C | 38.3°C | 2.5°C | 8 mm | 42% | 4 m/s | 6.8 |
| 1983 | 25.7°C | 17.8°C | 9.8°C | 31.0°C | 3.3°C | 65 mm | 48% | 3.9 m/s | — |
| 1982 | 27.2°C | 19.4°C | 11.6°C | 33.8°C | 3.6°C | 69 mm | 53% | 4.1 m/s | — |
| 1981 | 27.1°C | 19.3°C | 11.4°C | 35.7°C | 2.8°C | 41 mm | 47% | 4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 28.1°C with lows near 12.2°C (mean 20.2°C), based on 45 years of NASA POWER data.
May averages 69 mm of rainfall in Amarillo, a relatively wet time of year. The wettest on record was 224 mm in 2015.
The hottest May reached 40°C in 1996. The coldest dipped to -1.2°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°C. Daytime highs moved from 27.6°C to 28.4°C and overnight lows from 11.6°C to 12.9°C over the same span.
May is one of the warmer months of the year in Amarillo and a relatively wet time of year, so plan for around 28.1°C daytime highs and 12.2°C at night.
Not quite — May is the 8th coolest month in Amarillo, averaging 20.2°C.
For May in Amarillo, pack light layers you can adjust through the day, with typical highs of 28.1°C and lows of 12.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 48% — relatively dry.
Average wind speed in May is 3.9 m/s. The windiest May on record averaged 4.7 m/s (1988).
The wettest May on record was 2015 with 224 mm. On average, May sees 69 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 Amarillo 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.
