Weather StoryAlmanac, microseasons, and the day's weather story.

St. Marys, Georgia Weather

Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →

St. Marys weather forecast — hour by hour, 7-day outlook, NOAA radar

St. Marys, GA
Sunday, July 5 at 7:29 AM
78
°
Clear
Feels like
85°
Humidity
87%
Wind
7 mph
Sunrise
2:28 AM
Sunset
4:32 PM
St. Marys, GA
Hour by hour · 24h
24-Hour ForecastSt. Marys, GA: 24-hour forecast. Temperatures range from 76 to 94 degrees Fahrenheit with a 38% chance of precipitation at 3 PM.
L 76°H 94°
St. Marys, GA
7-day forecast
  1. Today
    Jul 5
    Rain
    38%
    0.13″
    94°77°
  2. Monday
    Jul 6
    Light Showers
    49%
    0.06″
    91°76°-3°
  3. Tuesday
    Jul 7
    Showers
    42%
    0.10″
    100°77°+9°
  4. Wednesday
    Jul 8
    Overcast
    37%
    100°75°
  5. Thursday
    Jul 9
    Light Drizzle
    20%
    0.02″
    98°77°-2°
  6. Friday
    Jul 10
    Partly Cloudy
    20%
    102°77°+4°
  7. Saturday
    Jul 11
    Light Drizzle
    24%
    102°75°
St. Marys, GA
Anemometer · 24h winds · from true
NESW
From · True
SW
224° · backing 46°
Direction
SW
224°
Sustained
7
mph
Gust
20
mph
Peak 24h
20
avg 7
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 7 · pk 20 @ 1:00a
0102030MPHB1B2B3B4B5B6B7-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 325SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 46° from the sw.
St. Marys, GA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1013.8
-0.1 mb in 3h · steady · 29.94 inHg
Now
1013.8
mb
3h
-0.1
mb
12h
+0.2
mb
24h
-2.2
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10141017
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY-21h-18h-15h-12h-9h-6h-3h-24hNOW1016.81013.71013.9
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
St. Marys, GA
Air quality
36
AQI
Good
-5 in 6h

AQI 36 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline). PM2.5 at 5.7 µg/m³, PM10 at 6.4 µg/m³ — typical background levels with no transport signature.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERGood
5.7μg/m³
PM 10Good
6μg/m³
NO₂Good
4μg/m³
OzoneGood
60μg/m³
UV IndexLow
0.1

What's driving it

PM × Wind × Precip

PM2.5 at 5.7 µg/m³, PM10 at 6.4 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.89
Wind
light
Recent rain
0h in last 6h
Pattern
background
St. Marys, GA
Sky cover · visibility · 24h
Cloud cover
0%
CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
30.8mi
UNLIMITED
79 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
11:29 UTC · St. Marys, GA · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
11:29 UTC · St. Marys, GA · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
St. Marys, GA
Satellite · infrared · animated
St. Marys, GA
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
St. Marys, GA
Almanac · Sunday, July 5
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
6:02 AM
Sunrise
2:28 AM
Daylight
14h 04m
Sunset
4:32 PM
Civil dusk
9:01 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
St. Marys, GA
The moon
Waning Gibbous
73% illuminated
Moonrise
11:38 PM
Moonset
11:40 AM
In sign
♓︎ Pisces
St. Marys, GA
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

St. Marys at a glance

  • Today vs. normal: 3°F below the seasonal normal for this latitude
  • Last frost: February 20 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

15-Day Forecast — St. Marys

  1. Sun94°77°38%
  2. Mon91°76°49%
  3. Tue100°77°42%
  4. Wed100°75°37%
  5. Thu98°77°20%
  6. Fri102°77°20%
  7. Sat102°75°24%
  8. Sun97°75°50%
  9. Mon95°72°49%
  10. Tue90°69°34%
  11. Wed97°73°23%
  12. Thu96°72°39%
  13. Fri95°73°46%
  14. Sat86°74°45%
  15. Sun93°74°51%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 5, 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 — St. Marys

SPC includes St. Marys in the general thunderstorm area today — no severe risk, but storms are possible.

  • TODAYTSTMGeneral Thunderstorms
  • 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.

ZIP codes in St. Marys

  • 31558

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.