Clarkston, Georgia Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Clarkston weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——83°57°—
- FridayJun 5Overcast——88°63°+5°
- SaturdayJun 6Overcast——90°67°+2°
- SundayJun 7Overcast21%—91°72°+1°
- MondayJun 8Light Drizzle49%—89°75°-2°
- TuesdayJun 9Heavy Drizzle36%0.15″76°68°-13°
- WednesdayJun 10Overcast20%—83°67°+7°
PM2.5 at 10.9 µg/m³ (AQI 54) with a 0.96 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust. AQI down 7 over the last 6 hours (steady decline since this morning).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 10.9 µg/m³ (AQI 54) with a 0.96 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 3:47 AM
- Moonset
- 1:56 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Clarkston at a glance
- Today vs. normal: 22°F below the seasonal normal for this latitude
- Last frost: March 10 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, 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.
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
Clarkston's warmest month is July (~80°F mean) and its coldest is January (~42°F). Rainfall peaks in July (4.7 inches) and bottoms out in October (3.4 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 42° | 4.6″ | 7 |
| February | 46° | 4.5″ | 7 |
| March | 53° | 4.7″ | 7 |
| April | 61° | 3.9″ | 7 |
| May | 69° | 3.8″ | 7 |
| June | 76° | 4.7″ | 7 |
| July | 80° | 4.7″ | 7 |
| August | 79° | 4.5″ | 7 |
| September | 73° | 4.1″ | 5 |
| October | 62° | 3.4″ | 4 |
| November | 52° | 4.2″ | 6 |
| December | 45° | 4.4″ | 7 |
Regional context
Clarkston's baseline climate, derived from NOAA NCEI 1991-2020 normals at the nearest reporting station, swings from a January mean of 42°F to a July mean of 80°F — a 37°F seasonal arc typical of the mid-latitude bands. Annual precipitation runs about 51.4 inches spread across roughly 77 days with measurable rain or snow each year.
Rainfall stays relatively even across the calendar: July tops out at 4.7 inches across 7.4 days with measurable rain, and October settles around 3.4 inches across 4.2 rainy days — a comparatively narrow seasonal range. The temperate, evenly-distributed pattern groups Clarkston with places like Scottdale, GA, Pine Lake, GA and North Decatur, GA, where seasonal storm tracks deliver moisture more uniformly than the continental interior.
The frost-sensitive growing window opens around mid-March, when overnight lows reliably clear freezing for cool-season crops like peas, lettuce, spinach, and radishes. Warm-season transplants — tomatoes, peppers, and basil — typically wait two weeks past that date to avoid late spring cold snaps. The window closes around mid-December, when overnight lows resume dipping below freezing and frost-tender plants need protection or harvest. Those dates are 30-year averages; the actual frost-free window in a given year can vary by 10-14 days at either end. Neighborhood-scale variation in elevation and cold-air pooling means the practical last-frost date inside Clarkston can lag the regional mean by 5-10 days in low spots, and a bench position with good cold-air drainage can run a week ahead.
Similar climates: Scottdale, GA, Pine Lake, GA, North Decatur, GA, Tucker, GA, Avondale Estates, GA.
Frequently asked
- When does it freeze in Clarkston?
- Clarkston's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Clarkston?
- July is the wettest month with about 4.7 inches of rain on average; the city receives roughly 51 inches annually.
- What is the warmest month in Clarkston?
- July is typically warmest, averaging about 80°F.
- What is the coldest month in Clarkston?
- January is typically coldest, averaging about 42°F.
- When can I start a vegetable garden in Clarkston?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Clarkston get?
- Clarkston averages about 77 rainy days per year.
- What hardiness zone is Clarkston?
- Clarkston's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Clarkston, Georgia sits in a humid subtropical climate zone. January means hover near 42°F while July averages 80°F — a 37°F seasonal swing.
Across the year, Clarkston receives about 51 inches of precipitation spread over roughly 77 rainy days.
The rhythm of the year is set by latitude (33.8°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.