May is one of the warmer months of the year in Macon, with average highs near 28.4°C and lows around 15.5°C (mean 22°C). It is one of the drier months, averaging 77 mm of rainfall and 72% relative humidity across the period.
May is one of the warmer months of the year in Macon. Across 45 years of records, the warmest Mays in Macon were 2000 and 2019 — when the month averaged 24.7°C — while the coldest was 1989 at 19.7°C. Typical May days reach 28.4°C with nights near 15.5°C. The long-term trend is warming, about 0.4°C per decade.
May is one of the drier months in Macon, averaging 77 mm of rainfall. The wettest May on record was 2003 with 177 mm, while the driest was 2007 at 16 mm.
Relative humidity in Macon during May averages 72%. The most humid May was 2009 at 85%, and the least humid was 2000 at 56%.
May receives about 6.2 kWh/m²/day of solar energy in Macon. The sunniest May was 2011 at 7 kWh/m²/day, and the cloudiest was 2009 at 5.
Average wind speed in Macon during May is 0.3 m/s. The windiest Mays were 2009, 2011 and 2017, among others at 0.4 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.1°C | 21.6°C | 22.3°C | 22.6°C | 22.0°C | +0.9°C |
| Avg High | 27.8°C | 28.0°C | 29.1°C | 28.9°C | 28.2°C | +0.4°C |
| Avg Low | 14.4°C | 15.3°C | 15.6°C | 16.2°C | 15.8°C | +1.4°C |
| Avg Rain | 76 mm | 70 mm | 72 mm | 87 mm | 81 mm | +5 mm |
May temperatures in Macon have risen by about 1.5°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 4.6°C (1989) to a record high of 38.2°C (2011).
Rainfall in May is one of the drier months, averaging 77 mm, with a wettest year of 177 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.5°C per decade, narrowing the gap between day and night.
One of the best times to visit Macon
May is one of the best times to visit Macon. Expect days averaging 28.4°C and nights around 15.5°C (mean 22°C) — warmer than Macon's yearly average — with moderate rainfall (77 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 | 28.3°C | 22.6°C | 16.9°C | 33.1°C | 10.0°C | 167 mm | 77% | 0.3 m/s | 5.6 |
| 2024 | 29.3°C | 23.5°C | 17.7°C | 33.0°C | 12.7°C | 78 mm | 77% | 0.3 m/s | 5.6 |
| 2023 | 26.7°C | 20.8°C | 15.0°C | 33.9°C | 6.4°C | 51 mm | 76% | 0.3 m/s | 5.6 |
| 2022 | 30.7°C | 23.7°C | 16.7°C | 36.1°C | 10.0°C | 66 mm | 67% | 0.3 m/s | 6.3 |
| 2021 | 28.3°C | 21.4°C | 14.5°C | 35.7°C | 6.7°C | 65 mm | 69% | 0.3 m/s | 6.7 |
| 2020 | 26.0°C | 20.1°C | 14.1°C | 31.3°C | 6.1°C | 56 mm | 80% | 0.3 m/s | 6.7 |
| 2019 | 31.4°C | 24.7°C | 18.1°C | 37.9°C | 9.3°C | 51 mm | 70% | 0.3 m/s | 6.9 |
| 2018 | 28.9°C | 23.3°C | 17.7°C | 35.5°C | 8.1°C | 153 mm | 77% | 0.3 m/s | 5.7 |
| 2017 | 28.8°C | 22.2°C | 15.5°C | 34.3°C | 8.3°C | 128 mm | 70% | 0.4 m/s | 6.2 |
| 2016 | 27.4°C | 21.2°C | 15.0°C | 35.8°C | 6.8°C | 60 mm | 76% | 0.3 m/s | 6.4 |
| 2015 | 28.6°C | 22.3°C | 16.1°C | 31.9°C | 9.6°C | 62 mm | 76% | 0.3 m/s | 6.9 |
| 2014 | 27.2°C | 21.4°C | 15.6°C | 31.9°C | 7.8°C | 84 mm | 80% | 0.3 m/s | 6.5 |
| 2013 | 25.4°C | 19.8°C | 14.1°C | 30.6°C | 6.9°C | 112 mm | 80% | 0.3 m/s | 6.1 |
| 2012 | 31.4°C | 24.4°C | 17.5°C | 37.9°C | 11.6°C | 62 mm | 65% | 0.3 m/s | 6.1 |
| 2011 | 31.4°C | 23.4°C | 15.3°C | 38.2°C | 5.8°C | 19 mm | 61% | 0.4 m/s | 7 |
| 2010 | 28.4°C | 22.9°C | 17.3°C | 31.8°C | 9.2°C | 141 mm | 80% | 0.3 m/s | 6.1 |
| 2009 | 25.9°C | 21.3°C | 16.8°C | 31.7°C | 7.7°C | 127 mm | 85% | 0.4 m/s | 5 |
| 2008 | 28.7°C | 21.7°C | 14.8°C | 34.9°C | 8.5°C | 70 mm | 71% | 0.3 m/s | 6.6 |
| 2007 | 30.7°C | 22.8°C | 14.9°C | 33.7°C | 8.8°C | 16 mm | 57% | 0.4 m/s | 6.7 |
| 2006 | 30.2°C | 22.8°C | 15.5°C | 36.8°C | 8.5°C | 46 mm | 63% | 0.4 m/s | 6.3 |
| 2005 | 26.4°C | 20.1°C | 13.8°C | 31.0°C | 7.3°C | 54 mm | 76% | 0.3 m/s | 6.5 |
| 2004 | 31.7°C | 24.6°C | 17.4°C | 36.4°C | 5.7°C | 63 mm | 65% | 0.3 m/s | 6.4 |
| 2003 🌧️ | 26.9°C | 21.8°C | 16.8°C | 30.8°C | 10.5°C | 177 mm | 84% | 0.3 m/s | 5.4 |
| 2002 | 29.7°C | 22.3°C | 14.9°C | 34.9°C | 6.8°C | 62 mm | 65% | 0.4 m/s | 6.6 |
| 2001 | 28.0°C | 21.3°C | 14.6°C | 32.9°C | 9.3°C | 85 mm | 73% | 0.4 m/s | 6.4 |
| 2000 🔥 | 32.7°C | 24.7°C | 16.7°C | 36.8°C | 9.1°C | 18 mm | 56% | 0.4 m/s | 6.6 |
| 1999 | 30.3°C | 22.5°C | 14.7°C | 33.2°C | 7.4°C | 44 mm | 61% | 0.3 m/s | 6.5 |
| 1998 | 29.4°C | 23.4°C | 17.3°C | 34.1°C | 10.9°C | 55 mm | 79% | 0.3 m/s | 6.6 |
| 1997 | 26.3°C | 19.8°C | 13.2°C | 31.6°C | 6.1°C | 93 mm | 74% | 0.3 m/s | 5.9 |
| 1996 | 28.7°C | 22.5°C | 16.4°C | 34.5°C | 5.0°C | 76 mm | 77% | 0.3 m/s | 6.7 |
| 1995 | 29.8°C | 23.1°C | 16.4°C | 35.5°C | 7.6°C | 62 mm | 69% | 0.3 m/s | 6.1 |
| 1994 | 27.5°C | 20.7°C | 14.0°C | 32.8°C | 9.2°C | 44 mm | 72% | 0.3 m/s | 6.4 |
| 1993 | 26.3°C | 20.4°C | 14.6°C | 29.9°C | 8.1°C | 74 mm | 78% | 0.3 m/s | 6 |
| 1992 | 27.0°C | 20.2°C | 13.5°C | 32.8°C | 5.7°C | 38 mm | 71% | 0.3 m/s | 5.9 |
| 1991 | 27.9°C | 23.1°C | 18.3°C | 32.8°C | 11.0°C | 126 mm | 84% | 0.3 m/s | 5.2 |
| 1990 | 26.9°C | 20.6°C | 14.3°C | 31.2°C | 7.9°C | 89 mm | 75% | 0.4 m/s | 6.1 |
| 1989 ❄️ | 26.3°C | 19.7°C | 13.1°C | 34.8°C | 4.6°C | 75 mm | 75% | 0.3 m/s | 6 |
| 1988 | 28.3°C | 20.8°C | 13.3°C | 34.7°C | 8.2°C | 48 mm | 63% | 0.4 m/s | 6.3 |
| 1987 | 28.0°C | 22.2°C | 16.4°C | 32.4°C | 11.0°C | 67 mm | 79% | 0.3 m/s | 5.9 |
| 1986 | 29.9°C | 22.6°C | 15.4°C | 35.2°C | 6.8°C | 80 mm | 63% | 0.3 m/s | 5.9 |
| 1985 | 29.1°C | 22.0°C | 14.9°C | 35.9°C | 8.5°C | 87 mm | 66% | 0.4 m/s | 6.2 |
| 1984 | 26.1°C | 20.0°C | 13.9°C | 30.6°C | 6.3°C | 131 mm | 79% | 0.3 m/s | 5.8 |
| 1983 | 26.0°C | 19.9°C | 13.8°C | 29.5°C | 7.9°C | 41 mm | 79% | 0.3 m/s | — |
| 1982 | 27.9°C | 21.8°C | 15.6°C | 32.0°C | 6.9°C | 100 mm | 76% | 0.3 m/s | — |
| 1981 | 28.4°C | 20.6°C | 12.9°C | 34.3°C | 6.6°C | 52 mm | 62% | 0.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 28.4°C with lows near 15.5°C (mean 22°C), based on 45 years of NASA POWER data.
May averages 77 mm of rainfall in Macon, one of the drier months. The wettest on record was 177 mm in 2003.
The hottest May reached 38.2°C in 2011. The coldest dipped to 4.6°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.5°C. Daytime highs moved from 27.5°C to 28.7°C and overnight lows from 14.2°C to 16.2°C over the same span.
May is one of the warmer months of the year in Macon and one of the drier months, so plan for around 28.4°C daytime highs and 15.5°C at night.
Not quite — May is the 8th coolest month in Macon, averaging 22°C.
For May in Macon, pack light layers you can adjust through the day, with typical highs of 28.4°C and lows of 15.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 72% — moderately humid.
Average wind speed in May is 0.3 m/s. The windiest May on record averaged 0.4 m/s (1981).
The wettest May on record was 2003 with 177 mm. On average, May sees 77 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 Macon 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.
