Smyrna, Georgia Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
Smyrna weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——84°69°—
- TuesdayJun 16Light Rain63%0.16″75°68°-9°
- WednesdayJun 17Thunderstorm56%0.02″82°68°+7°
- ThursdayJun 18Thunderstorm82%0.96″78°70°-4°
- FridayJun 19T-storm w/ Hail68%0.07″78°70°0°
- SaturdayJun 20Overcast37%—86°64°+8°
- SundayJun 21Overcast20%—91°69°+5°
AQI 39 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 35. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 35. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 35
- UV peak
- 3.8 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 5.8 µg/m³, PM10 at 6.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.97
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































A summer fog for fair, a winter fog for rain.
- Moonrise
- 6:34 AM
- Moonset
- 9:00 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
Smyrna at a glance
- Today vs. normal: 10°F below the seasonal normal for this latitude
- Last frost: March 10 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Smyrna
- Mon84°69°2%
- Tue75°68°63%
- Wed82°68°56%
- Thu78°70°82%
- Fri78°70°68%
- Sat86°64°37%
- Sun91°69°20%
- Mon84°71°35%
- Tue83°69°35%
- Wed74°67°34%
- Thu86°66°24%
- Fri91°72°33%
- Sat97°75°39%
- Sun98°78°39%
- Mon99°77°32%
- Tue99°79°36%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Smyrna
Right now in the garden
Peak growing season
As of June 15, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Smyrna
SPC has placed Smyrna in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
Microseason · June 11–15
Sun climbs to its northern throne
Days lengthen toward solstice; longest light lingers until after 8 PM, heat building steadily.
Day 166 of 365 · Wedge 33 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
The year in Smyrna tops out in July (~79°F) and dips lowest in January (~42°F), with December wettest at 4.9 inches and October driest at 2.1 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 42° | 4.6″ | 15 |
| February | 45° | 3.9″ | 13 |
| March | 53° | 4.6″ | 15 |
| April | 61° | 3.8″ | 14 |
| May | 69° | 2.9″ | 13 |
| June | 77° | 3.8″ | 16 |
| July | 79° | 4.2″ | 22 |
| August | 78° | 4.7″ | 23 |
| September | 73° | 2.9″ | 14 |
| October | 64° | 2.1″ | 10 |
| November | 52° | 3.6″ | 12 |
| December | 45° | 4.9″ | 15 |
Regional context
Per NOAA NCEI 1991-2020 normals, Smyrna runs from a 42°F January mean to 79°F in July, a 37°F seasonal spread, with near 46 inches of precipitation across about 181 wet days.
Smyrna's precipitation spreads evenly: December peaks at 4.9 inches on 14.5 wet days, while October holds 2.1 inches over 9.7 — no month dominates Smyrna's rain calendar. It is a balanced pattern Smyrna shares with places like Vinings, GA, Fair Oaks, GA and Mableton, GA.
Smyrna reaches its last hard frost near mid-March; that is the cue for peas, lettuce, spinach, and radishes. Heat-demanding starts go out a fortnight on in Smyrna, after the soil warms and cold snaps clear. By mid-December, frost is back in Smyrna — protect or harvest anything tender. Smyrna's low ground holds frost later into spring than Smyrna's benches, which run 3-5 days ahead.
Similar climates: Vinings, GA, Fair Oaks, GA, Mableton, GA, Marietta, GA, Austell, GA.
Frequently asked
- When does it freeze in Smyrna?
- Frost typically leaves Smyrna by mid-March and returns to Smyrna near mid-December.
- What is the rainy season in Smyrna?
- Rainfall in Smyrna peaks in December near 4.9 inches, out of about 46 inches annually.
- What is the warmest month in Smyrna?
- The warmest stretch in Smyrna comes in July, around 79°F on average.
- What is the coldest month in Smyrna?
- On average January is the chilliest month in Smyrna, about 42°F.
- When can I start a vegetable garden in Smyrna?
- Time tomatoes in Smyrna for two weeks after mid-March; peas and greens start at Smyrna's frost line.
- How many rainy days does Smyrna get?
- Smyrna records around 181 days of measurable precipitation annually.
- What hardiness zone is Smyrna?
- Smyrna's USDA zone comes from its January mean (42°F); enter the ZIP on the USDA lookup for the number.
- What is the 10-day forecast for Smyrna?
- Smyrna's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Smyrna?
- See this week's day-by-day rain chances for Smyrna in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Smyrna?
- Current conditions for Smyrna and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Smyrna forecast updated?
- The Smyrna forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Smyrna?
- Day length in Smyrna peaks around the June solstice — earliest sunrise and latest sunset — and is shortest near the December solstice.
- How accurate is the weather forecast for Smyrna?
- The next few days in Smyrna's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Smyrna, Georgia occupies a humid subtropical zone, with January means near 42°F and July around 79°F — a 37°F swing.
Across the year, Smyrna collects about 46 inches of precipitation over roughly 181 days with measurable rain or snow.
Latitude 33.9°N gives Smyrna its 37°F swing, and with it the rhythm of Smyrna's growing season.
ZIP codes in Smyrna
- 30126
- 30082
- 30080
- 30081