Smyrna, Georgia Weather
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Climate of Smyrna: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Smyrna, with average daytime highs around 32°C. January is the coolest, when nights typically fall to about -1°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 33°C, so the seasons feel very different from each other.
The area receives about 1290 mm of rain in a typical year. Most of it falls from December to August (around 78% of the yearly total), and December is the wettest month at roughly 133 mm.
For outdoor plans and travel, September to October usually offer the most comfortable weather in Smyrna, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 10° | -1° | 107 mm | 82% |
| Feb | 13° | 1° | 118 mm | 82% |
| Mar | 17° | 5° | 119 mm | 80% |
| Apr | 22° | 10° | 100 mm | 78% |
| May | 26° | 15° | 102 mm | 76% |
| Jun | 30° | 19° | 109 mm | 73% |
| Jul | 32° | 21° | 121 mm | 71% |
| Aug | 32° | 20° | 101 mm | 70% |
| Sep | 29° | 17° | 95 mm | 70% |
| Oct | 23° | 10° | 88 mm | 71% |
| Nov | 17° | 4° | 99 mm | 74% |
| Dec | 12° | 1° | 133 mm | 82% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Smyrna. Values describe typical conditions, not a forecast.
About Smyrna weather
Smyrna sits within Georgia's humid subtropical climate, from the coastal plain to the Appalachian foothills, about 19 km north-west of Atlanta. Conditions turn hot with hot, humid summers (June–August) with highs often above 33°C. By December, expect mild winters (December–February). This page shows live, auto-refreshing weather for Smyrna: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/New_York.
Frequently asked questions
Smyrna is about 19 km north-west of Atlanta, in Georgia.
Smyrna sees mild winters (December–February).
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Smyrna's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Smyrna, with average daytime highs of about 32°C and nights around 21°C.
The coldest nights come in January, when the average low is about -1°C and daytime highs reach around 10°C. Frost is possible on clear, calm nights.
Smyrna receives about 1290 mm of rain in a typical year. December is the wettest month at roughly 133 mm, and the main rainy period is December to August.
September to October usually offer the most comfortable weather in Smyrna, with mild daytime temperatures and little rain.
In November Smyrna typically sees daytime highs near 17°C and lows near 4°C, with about 99 mm of rain over the month and average humidity around 74%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
Live temperature for Smyrna is shown at the top of this page and refreshes automatically — see the hourly breakdown below for how it changes through the day.
Smyrna's day-to-day weather follows the broader pattern of Georgia described above. See the hourly weather forecast or the air quality index for more detail.