May is one of the warmer months of the year in Newnan, with average highs near 27°C and lows around 14.5°C (mean 20.8°C). It is about average for rainfall, averaging 99 mm of rainfall and 75% relative humidity across the period.
May is one of the warmer months of the year in Newnan. Across 45 years of records, the warmest May in Newnan was 2000 — when the month averaged 23.2°C — while the coldest was 1997 at 18.1°C. Typical May days reach 27°C with nights near 14.5°C. The long-term trend is warming, about 0.4°C per decade.
May is about average for rainfall in Newnan, averaging 99 mm of rainfall. The wettest May on record was 2003 with 281 mm, while the driest was 2007 at 22 mm.
Relative humidity in Newnan during May averages 75%. The most humid May was 2009 at 86%, and the least humid was 2007 at 56%.
May receives about 6 kWh/m²/day of solar energy in Newnan. The sunniest Mays were 2007 and 2019 at 6.8 kWh/m²/day, and the cloudiest were 1991 and 2009 at 4.8.
Average wind speed in Newnan during May is 0.1 m/s. The windiest Mays were 2021, 2022 and 2024, among others at 0.1 m/s, while the calmest were 2014, 2023 and 2025, among others at 0 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.9°C | 20.3°C | 21.1°C | 21.4°C | 20.9°C | +1°C |
| Avg High | 26.4°C | 26.4°C | 27.5°C | 27.6°C | 26.9°C | +0.5°C |
| Avg Low | 13.4°C | 14.3°C | 14.6°C | 15.1°C | 14.9°C | +1.5°C |
| Avg Rain | 101 mm | 87 mm | 103 mm | 105 mm | 100 mm | 0 mm |
May temperatures in Newnan have risen by about 1.6°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 3.4°C (2011) to a record high of 36.5°C (2011).
Rainfall in May is about average for rainfall, averaging 99 mm, with a wettest year of 281 mm.
One of the best times to visit Newnan
May is one of the best times to visit Newnan. Expect days averaging 27°C and nights around 14.5°C (mean 20.8°C) — warmer than Newnan's yearly average — with higher rainfall (99 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 | 27.0°C | 21.6°C | 16.1°C | 32.6°C | 9.3°C | 188 mm | 80% | 0 m/s | 5.3 |
| 2024 | 28.1°C | 22.4°C | 16.8°C | 30.7°C | 11.2°C | 109 mm | 79% | 0.1 m/s | 5.8 |
| 2023 | 25.3°C | 19.7°C | 14.1°C | 31.5°C | 5.6°C | 70 mm | 81% | 0 m/s | 5.6 |
| 2022 | 29.3°C | 22.5°C | 15.7°C | 34.7°C | 9.7°C | 61 mm | 71% | 0.1 m/s | 6.2 |
| 2021 | 26.5°C | 19.9°C | 13.3°C | 34.8°C | 6.6°C | 110 mm | 73% | 0.1 m/s | 6.4 |
| 2020 | 24.9°C | 19.2°C | 13.4°C | 30.4°C | 4.0°C | 64 mm | 79% | 0.1 m/s | 6.4 |
| 2019 | 29.2°C | 22.9°C | 16.6°C | 34.5°C | 8.5°C | 64 mm | 76% | 0.1 m/s | 6.8 |
| 2018 | 28.7°C | 22.8°C | 16.8°C | 33.8°C | 8.3°C | 150 mm | 78% | 0.1 m/s | 5.9 |
| 2017 | 27.5°C | 21.1°C | 14.6°C | 34.4°C | 7.2°C | 161 mm | 74% | 0.1 m/s | 6.2 |
| 2016 | 26.4°C | 20.2°C | 14.0°C | 33.9°C | 6.2°C | 59 mm | 76% | 0.1 m/s | 6.5 |
| 2015 | 27.7°C | 21.5°C | 15.3°C | 31.2°C | 7.1°C | 105 mm | 77% | 0.1 m/s | 6.6 |
| 2014 | 26.3°C | 20.4°C | 14.6°C | 31.1°C | 6.4°C | 85 mm | 80% | 0 m/s | 6.3 |
| 2013 | 24.6°C | 19.0°C | 13.4°C | 30.9°C | 4.6°C | 133 mm | 80% | 0 m/s | 5.9 |
| 2012 | 29.6°C | 22.9°C | 16.2°C | 36.1°C | 9.8°C | 92 mm | 70% | 0.1 m/s | 6.3 |
| 2011 | 28.6°C | 21.1°C | 13.6°C | 36.5°C | 3.4°C | 43 mm | 68% | 0.1 m/s | 6.7 |
| 2010 | 27.5°C | 21.9°C | 16.3°C | 32.0°C | 8.4°C | 154 mm | 81% | 0.1 m/s | 5.9 |
| 2009 | 24.7°C | 20.4°C | 16.1°C | 30.4°C | 6.0°C | 165 mm | 86% | 0 m/s | 4.8 |
| 2008 | 26.9°C | 20.4°C | 13.9°C | 32.6°C | 8.4°C | 100 mm | 75% | 0 m/s | 6.2 |
| 2007 | 30.2°C | 22.2°C | 14.2°C | 33.1°C | 8.0°C | 22 mm | 56% | 0.1 m/s | 6.8 |
| 2006 | 27.9°C | 21.2°C | 14.4°C | 36.1°C | 8.2°C | 58 mm | 70% | 0.1 m/s | 6.3 |
| 2005 | 25.0°C | 18.7°C | 12.4°C | 29.6°C | 5.2°C | 80 mm | 78% | 0.1 m/s | 6.2 |
| 2004 | 29.9°C | 23.1°C | 16.2°C | 34.5°C | 5.4°C | 93 mm | 70% | 0 m/s | 5.9 |
| 2003 🌧️ | 26.0°C | 20.8°C | 15.7°C | 29.3°C | 9.5°C | 281 mm | 85% | 0 m/s | 4.9 |
| 2002 | 28.0°C | 20.8°C | 13.7°C | 32.5°C | 4.7°C | 91 mm | 70% | 0.1 m/s | 6.2 |
| 2001 | 26.1°C | 20.0°C | 14.0°C | 30.2°C | 8.0°C | 102 mm | 77% | 0.1 m/s | 6.2 |
| 2000 🔥 | 30.7°C | 23.2°C | 15.7°C | 34.9°C | 9.0°C | 36 mm | 63% | 0.1 m/s | 6.3 |
| 1999 | 27.9°C | 20.7°C | 13.5°C | 31.0°C | 6.0°C | 80 mm | 69% | 0.1 m/s | 6.3 |
| 1998 | 28.5°C | 22.4°C | 16.4°C | 33.6°C | 8.2°C | 79 mm | 78% | 0.1 m/s | 6.7 |
| 1997 ❄️ | 24.1°C | 18.1°C | 12.1°C | 29.3°C | 5.4°C | 109 mm | 79% | 0 m/s | 5.9 |
| 1996 | 27.8°C | 21.7°C | 15.7°C | 33.9°C | 5.8°C | 58 mm | 78% | 0.1 m/s | 6.6 |
| 1995 | 28.1°C | 21.7°C | 15.4°C | 33.1°C | 6.6°C | 57 mm | 73% | 0.1 m/s | 6.1 |
| 1994 | 25.2°C | 19.0°C | 12.8°C | 29.1°C | 8.1°C | 68 mm | 78% | 0 m/s | 6.5 |
| 1993 | 24.9°C | 19.3°C | 13.7°C | 29.7°C | 6.4°C | 102 mm | 81% | 0.1 m/s | 5.8 |
| 1992 | 25.1°C | 18.9°C | 12.6°C | 30.5°C | 5.5°C | 46 mm | 75% | 0.1 m/s | 5.8 |
| 1991 | 27.0°C | 22.2°C | 17.3°C | 33.0°C | 8.6°C | 185 mm | 84% | 0 m/s | 4.8 |
| 1990 | 25.4°C | 19.4°C | 13.3°C | 29.4°C | 6.4°C | 89 mm | 78% | 0.1 m/s | 6 |
| 1989 | 24.7°C | 18.5°C | 12.3°C | 33.7°C | 4.0°C | 89 mm | 78% | 0.1 m/s | 5.9 |
| 1988 | 27.4°C | 19.8°C | 12.1°C | 34.2°C | 5.8°C | 49 mm | 64% | 0.1 m/s | 6.3 |
| 1987 | 27.0°C | 21.6°C | 16.1°C | 31.3°C | 11.8°C | 87 mm | 81% | 0.1 m/s | 5.6 |
| 1986 | 28.6°C | 21.5°C | 14.5°C | 33.6°C | 5.9°C | 96 mm | 64% | 0 m/s | 5.6 |
| 1985 | 26.7°C | 20.3°C | 13.9°C | 34.0°C | 7.3°C | 123 mm | 73% | 0.1 m/s | 5.7 |
| 1984 | 25.2°C | 19.0°C | 12.8°C | 29.2°C | 5.4°C | 133 mm | 80% | 0 m/s | 5.5 |
| 1983 | 24.6°C | 18.6°C | 12.7°C | 27.8°C | 6.4°C | 109 mm | 81% | 0 m/s | — |
| 1982 | 27.0°C | 20.9°C | 14.7°C | 30.9°C | 5.8°C | 96 mm | 77% | 0.1 m/s | — |
| 1981 | 26.7°C | 19.2°C | 11.7°C | 32.1°C | 5.7°C | 124 mm | 67% | 0.1 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 27°C with lows near 14.5°C (mean 20.8°C), based on 45 years of NASA POWER data.
May averages 99 mm of rainfall in Newnan, about average for rainfall. The wettest on record was 281 mm in 2003.
The hottest May reached 36.5°C in 2011. The coldest dipped to 3.4°C in 2011.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.6°C. Daytime highs moved from 26°C to 27.2°C and overnight lows from 13.2°C to 15.2°C over the same span.
May is one of the warmer months of the year in Newnan and about average for rainfall, so plan for around 27°C daytime highs and 14.5°C at night.
Not quite — May is the 8th coolest month in Newnan, averaging 20.8°C.
For May in Newnan, pack light layers you can adjust through the day, with typical highs of 27°C and lows of 14.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 75% — quite humid.
Average wind speed in May is 0.1 m/s. The windiest May on record averaged 0.1 m/s (1981).
The wettest May on record was 2003 with 281 mm. On average, May sees 99 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 Newnan 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.
