May is one of the warmer months of the year in Snellville, with average highs near 26.3°C and lows around 14.4°C (mean 20.4°C). It is one of the drier months, averaging 95 mm of rainfall and 76% relative humidity across the period.
May is one of the warmer months of the year in Snellville. Across 45 years of records, the warmest May in Snellville was 2004 — when the month averaged 22.8°C — while the coldest was 1997 at 17.6°C. Typical May days reach 26.3°C with nights near 14.4°C. The long-term trend is warming, about 0.3°C per decade.
May is one of the drier months in Snellville, averaging 95 mm of rainfall. The wettest May on record was 2003 with 215 mm, while the driest were 1988 and 2007 at 32 mm.
Relative humidity in Snellville during May averages 76%. The most humid May was 2009 at 85%, and the least humid was 2007 at 60%.
May receives about 6 kWh/m²/day of solar energy in Snellville. 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 Snellville during May is 0.5 m/s. The windiest Mays were 2021, 2023 and 2025, among others at 0.6 m/s, while the calmest was 1987 at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.6°C | 19.9°C | 20.7°C | 21.1°C | 20.3°C | +0.7°C |
| Avg High | 25.9°C | 25.7°C | 27.0°C | 26.9°C | 25.9°C | 0°C |
| Avg Low | 13.4°C | 14.1°C | 14.5°C | 15.3°C | 14.8°C | +1.4°C |
| Avg Rain | 91 mm | 90 mm | 85 mm | 110 mm | 102 mm | +12 mm |
May temperatures in Snellville have risen by about 1.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 2.6°C (1989) to a record high of 35.1°C (2006).
Rainfall in May is one of the drier months, averaging 95 mm, with a wettest year of 215 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 Snellville
May is one of the best times to visit Snellville. Expect days averaging 26.3°C and nights around 14.4°C (mean 20.4°C) — warmer than Snellville's yearly average — with higher rainfall (95 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 | 25.6°C | 20.7°C | 15.9°C | 30.5°C | 9.7°C | 171 mm | 81% | 0.6 m/s | 5.3 |
| 2024 | 27.1°C | 21.9°C | 16.7°C | 30.5°C | 10.7°C | 103 mm | 80% | 0.5 m/s | 5.8 |
| 2023 | 24.6°C | 19.4°C | 14.2°C | 32.5°C | 5.4°C | 64 mm | 81% | 0.6 m/s | 5.6 |
| 2022 | 28.2°C | 21.8°C | 15.5°C | 33.2°C | 8.8°C | 68 mm | 73% | 0.5 m/s | 6.2 |
| 2021 | 25.5°C | 19.5°C | 13.4°C | 32.7°C | 6.6°C | 112 mm | 75% | 0.6 m/s | 6.4 |
| 2020 | 24.4°C | 18.7°C | 13.1°C | 30.5°C | 4.7°C | 95 mm | 81% | 0.5 m/s | 6.4 |
| 2019 | 28.5°C | 22.7°C | 16.8°C | 33.0°C | 8.5°C | 59 mm | 77% | 0.5 m/s | 6.8 |
| 2018 | 27.2°C | 22.0°C | 16.9°C | 33.3°C | 10.1°C | 184 mm | 81% | 0.5 m/s | 5.9 |
| 2017 | 26.7°C | 20.7°C | 14.7°C | 33.4°C | 6.8°C | 162 mm | 75% | 0.6 m/s | 6.2 |
| 2016 | 25.9°C | 20.0°C | 14.1°C | 33.0°C | 6.5°C | 71 mm | 77% | 0.5 m/s | 6.5 |
| 2015 | 27.3°C | 21.3°C | 15.4°C | 31.5°C | 8.0°C | 80 mm | 76% | 0.5 m/s | 6.6 |
| 2014 | 26.0°C | 20.5°C | 14.9°C | 31.3°C | 7.7°C | 104 mm | 80% | 0.5 m/s | 6.3 |
| 2013 | 24.1°C | 18.6°C | 13.1°C | 30.4°C | 5.0°C | 154 mm | 81% | 0.6 m/s | 5.9 |
| 2012 | 28.4°C | 22.5°C | 16.5°C | 34.9°C | 10.1°C | 91 mm | 73% | 0.5 m/s | 6.3 |
| 2011 | 27.3°C | 20.7°C | 14.1°C | 34.5°C | 3.4°C | 47 mm | 72% | 0.6 m/s | 6.7 |
| 2010 | 27.1°C | 21.8°C | 16.5°C | 31.0°C | 8.4°C | 143 mm | 81% | 0.5 m/s | 5.9 |
| 2009 | 24.9°C | 20.3°C | 15.8°C | 29.9°C | 6.4°C | 129 mm | 85% | 0.6 m/s | 4.8 |
| 2008 | 26.5°C | 19.9°C | 13.4°C | 32.9°C | 7.8°C | 72 mm | 74% | 0.6 m/s | 6.2 |
| 2007 | 29.0°C | 21.5°C | 13.9°C | 32.7°C | 7.8°C | 32 mm | 60% | 0.5 m/s | 6.8 |
| 2006 | 27.0°C | 20.6°C | 14.3°C | 35.1°C | 7.8°C | 55 mm | 71% | 0.6 m/s | 6.3 |
| 2005 | 24.5°C | 18.6°C | 12.6°C | 31.0°C | 5.5°C | 55 mm | 77% | 0.5 m/s | 6.2 |
| 2004 🔥 | 29.5°C | 22.8°C | 16.2°C | 34.1°C | 4.2°C | 84 mm | 69% | 0.5 m/s | 5.9 |
| 2003 🌧️ | 25.1°C | 20.4°C | 15.8°C | 29.2°C | 9.8°C | 215 mm | 85% | 0.6 m/s | 4.9 |
| 2002 | 27.0°C | 20.2°C | 13.4°C | 31.7°C | 5.1°C | 85 mm | 70% | 0.6 m/s | 6.2 |
| 2001 | 26.8°C | 20.4°C | 14.1°C | 31.7°C | 8.5°C | 87 mm | 74% | 0.6 m/s | 6.2 |
| 2000 | 30.0°C | 22.6°C | 15.3°C | 34.4°C | 8.3°C | 39 mm | 64% | 0.6 m/s | 6.3 |
| 1999 | 27.1°C | 20.2°C | 13.4°C | 30.4°C | 5.9°C | 77 mm | 69% | 0.6 m/s | 6.3 |
| 1998 | 27.7°C | 22.1°C | 16.6°C | 31.5°C | 9.5°C | 91 mm | 80% | 0.5 m/s | 6.7 |
| 1997 ❄️ | 23.5°C | 17.6°C | 11.6°C | 28.1°C | 5.5°C | 110 mm | 78% | 0.6 m/s | 5.9 |
| 1996 | 26.6°C | 21.1°C | 15.6°C | 30.8°C | 5.1°C | 71 mm | 81% | 0.5 m/s | 6.6 |
| 1995 | 26.5°C | 20.6°C | 14.8°C | 31.6°C | 6.2°C | 78 mm | 76% | 0.6 m/s | 6.1 |
| 1994 | 24.5°C | 18.4°C | 12.3°C | 29.7°C | 8.4°C | 66 mm | 77% | 0.5 m/s | 6.5 |
| 1993 | 24.8°C | 19.4°C | 14.0°C | 29.9°C | 6.9°C | 105 mm | 80% | 0.5 m/s | 5.8 |
| 1992 | 24.2°C | 18.3°C | 12.3°C | 29.5°C | 3.3°C | 50 mm | 77% | 0.5 m/s | 5.8 |
| 1991 | 26.9°C | 22.0°C | 17.1°C | 31.7°C | 9.2°C | 155 mm | 84% | 0.5 m/s | 4.8 |
| 1990 | 24.8°C | 19.1°C | 13.4°C | 29.3°C | 6.4°C | 100 mm | 78% | 0.6 m/s | 6 |
| 1989 | 23.7°C | 17.7°C | 11.7°C | 31.4°C | 2.6°C | 102 mm | 79% | 0.6 m/s | 5.9 |
| 1988 | 26.6°C | 19.4°C | 12.2°C | 34.0°C | 7.3°C | 32 mm | 65% | 0.6 m/s | 6.3 |
| 1987 | 26.6°C | 21.4°C | 16.2°C | 30.1°C | 9.7°C | 65 mm | 80% | 0.4 m/s | 5.6 |
| 1986 | 28.2°C | 21.3°C | 14.4°C | 32.5°C | 6.3°C | 85 mm | 65% | 0.5 m/s | 5.6 |
| 1985 | 25.8°C | 19.7°C | 13.6°C | 32.9°C | 6.7°C | 108 mm | 73% | 0.6 m/s | 5.7 |
| 1984 | 24.6°C | 18.6°C | 12.5°C | 28.4°C | 5.5°C | 142 mm | 80% | 0.6 m/s | 5.5 |
| 1983 | 24.3°C | 18.5°C | 12.7°C | 27.1°C | 6.9°C | 93 mm | 80% | 0.6 m/s | — |
| 1982 | 26.7°C | 20.9°C | 15.2°C | 29.8°C | 5.8°C | 85 mm | 78% | 0.5 m/s | — |
| 1981 | 26.7°C | 19.3°C | 12.0°C | 31.7°C | 6.4°C | 103 mm | 66% | 0.6 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 26.3°C with lows near 14.4°C (mean 20.4°C), based on 45 years of NASA POWER data.
May averages 95 mm of rainfall in Snellville, one of the drier months. The wettest on record was 215 mm in 2003.
The hottest May reached 35.1°C in 2006. The coldest dipped to 2.6°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.3°C. Daytime highs moved from 25.6°C to 26.2°C and overnight lows from 13.2°C to 15.1°C over the same span.
May is one of the warmer months of the year in Snellville and one of the drier months, so plan for around 26.3°C daytime highs and 14.4°C at night.
Not quite — May is the 8th coolest month in Snellville, averaging 20.4°C.
For May in Snellville, pack light layers you can adjust through the day, with typical highs of 26.3°C and lows of 14.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 76% — quite humid.
Average wind speed in May is 0.5 m/s. The windiest May on record averaged 0.6 m/s (1981).
The wettest May on record was 2003 with 215 mm. On average, May sees 95 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 Snellville 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.
