Severe Thunderstorm Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM Excessive Heat Watch 7:00 PM Extreme Heat Warning — Suwannee, FL, Baker, FL, Inland Nassau, FL, Union, FL, Bradford, FL, Gilchrist, FL, Eastern Hamilton, FL, Coastal Nassau, FL, Coastal Duval, FL, Eastern Clay, FL, Eastern Alachua, FL, Eastern Putnam, FL, Western Hamilton, FL, Trout River, FL, Western Clay, FL, Northeast Coastal St. Johns, FL, Western Alachua, FL, Western Putnam, FL, Northern Columbia, FL, South Central Duval, FL, Southeast Coastal St. Johns, FL, Southeastern Columbia, FL, Western Duval, FL, Northern Inland St. Johns, FL, Southwestern Columbia, FL, Southern Inland St. Johns, FL, Western St. Johns, FL, Inland Glynn, GA, Coastal Glynn, GA, Echols, GA, Clinch, GA, Inland Camden, GA, Coastal Camden, GA, Northeastern Charlton, GA, Southern Ware, GA, Western Charlton, GA 7:00 PM

St. Marys, Georgia

Last updated: 6:24 PM CDT  ·  Refresh
33°C
Feels like 39°
Mostly Cloudy
▲ 36°  /  ▼ 24°
Wind
6 mph WSW
Humidity
57%
Dew Point
24°
Pressure
29.74 inHg
Visibility
10 mi
UV Index
1.9
Cloud Cover
78%
Sunrise
6:42 AM
Sunset
8:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. Marys is currently mostly cloudy at 33°C. Precipitation is likely — peak probability 81% around 7 PM. Atmospheric instability is elevated (CAPE up to 2425 J/kg) — isolated convective development possible. Sunrise: 6:42AM · Sunset: 8:22PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
Excessive Heat Watch
Expires 7:00 PM
Extreme Heat Warning
Suwannee, FL, Baker, FL, Inland Nassau, FL, Union, FL, Bradford, FL, Gilchrist, FL, Eastern Hamilton, FL, Coastal Nassau, FL, Coastal Duval, FL, Eastern Clay, FL, Eastern Alachua, FL, Eastern Putnam, FL, Western Hamilton, FL, Trout River, FL, Western Clay, FL, Northeast Coastal St. Johns, FL, Western Alachua, FL, Western Putnam, FL, Northern Columbia, FL, South Central Duval, FL, Southeast Coastal St. Johns, FL, Southeastern Columbia, FL, Western Duval, FL, Northern Inland St. Johns, FL, Southwestern Columbia, FL, Southern Inland St. Johns, FL, Western St. Johns, FL, Inland Glynn, GA, Coastal Glynn, GA, Echols, GA, Clinch, GA, Inland Camden, GA, Coastal Camden, GA, Northeastern Charlton, GA, Southern Ware, GA, Western Charlton, GA
Expires 7:00 PM
58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
70%
8 PM
32°
72%
9 PM
30°
73%
10 PM
28°
61%
11 PM
27°
68%
12 AM
27°
67%
1 AM
27°
54%
2 AM
27°
37%
3 AM
26°
37%
4 AM
26°
31%
5 AM
26°
27%
6 AM
24°
16%
7 AM
24°
25%
8 AM
25°
31%
9 AM
26°
40%
10 AM
27°
40%
11 AM
28°
42%
12 PM
29°
45%
1 PM
31°
56%
2 PM
34°
56%
3 PM
33°
62%
4 PM
32°
58%
5 PM
32°
63%
6 PM
32°
63%
7-Day Forecast
Tonight
36° 24°
Mostly Cloudy with a 70% chance of rain.
Thu
37° 24°
Partly Cloudy with a 80% chance of rain.
Fri
37° 23°
Partly Cloudy with a 54% chance of rain.
Sat
34° 23°
Heavy Rain, 86% chance.
Sun
34° 23°
Rain, 77% chance.
Mon
34° 23°
Rain, 72% chance.
Tue
34° 23°
Rain, 76% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Cloudy 70% 6 mph WSW 57%
8 PM 32° Mostly Cloudy 72% 6 mph SSW 67%
9 PM 30° Mostly Cloudy 73% 6 mph SW 75%
10 PM 28° Overcast 61% 7 mph SW 84%
11 PM 27° Overcast 68% 7 mph SW 89%
12 AM 27° Mostly Cloudy 67% 7 mph WSW 88%
1 AM 27° Mostly Cloudy 54% 7 mph WSW 86%
2 AM 27° Mostly Cloudy 37% 7 mph WSW 85%
3 AM 26° Mostly Cloudy 37% 7 mph WSW 86%
4 AM 26° Mostly Cloudy 31% 7 mph WSW 87%
5 AM 26° Mostly Cloudy 27% 7 mph WSW 87%
6 AM 24° Mostly Cloudy 16% 7 mph W 86%
7 AM 24° Mostly Cloudy 25% 6 mph W 84%
8 AM 25° Mostly Cloudy 31% 6 mph WSW 81%
9 AM 26° Partly Cloudy 40% 7 mph WSW 75%
10 AM 27° Partly Cloudy 40% 7 mph WSW 68%
11 AM 28° Partly Cloudy 42% 7 mph WSW 62%
12 PM 29° Partly Cloudy 45% 7 mph WSW 56%
1 PM 31° Partly Cloudy 56% 8 mph WSW 51%
2 PM 34° Partly Cloudy 56% 8 mph WSW 49%
3 PM 33° Partly Cloudy 62% 8 mph WSW 53%
4 PM 32° Partly Cloudy 58% 8 mph SW 57%
5 PM 32° Partly Cloudy 63% 7 mph SW 60%
6 PM 32° Mostly Cloudy 63% 6 mph WSW 62%
15-Day Forecast
Today
7/29
Mostly Cloudy
70%
24°
36°
Thu
7/30
Partly Cloudy
80%
24°
37°
Fri
7/31
Partly Cloudy
54%
23°
37°
Sat
8/1
Heavy Rain
86%
23°
34°
Sun
8/2
Rain
77%
23°
34°
Mon
8/3
Rain
72%
23°
34°
Tue
8/4
Rain
76%
23°
34°
Wed
8/5
Rain
63%
23°
34°
Thu
8/6
Drizzle
46%
24°
34°
Fri
8/7
Drizzle
47%
24°
35°
Sat
8/8
Drizzle
64%
24°
34°
Sun
8/9
Drizzle
60%
25°
36°
Mon
8/10
Rain
90%
25°
37°
Tue
8/11
Drizzle
60%
25°
36°
Wed
8/12
Drizzle
60%
25°
37°
58
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
58 AQI 13.1 µg/m³
O3
Ground-level ozone
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 58 Moderate 36 58
Fri 56 Moderate 35 56
Sat 57 Moderate 43 57
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Jul 29, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3096 J/kg
MLCAPE2059 J/kg
MUCAPE3096 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-7.0
Kinematics
0–6 km Shear16 kt
0–1 km Shear14 kt
Eff. Shear16 kt
0–1 km SRH-26
0–3 km SRH-23
Eff. SRH-23
Storm Motion252° @ 23 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.6
Thermo & Levels
PWAT2.40 in
0–3 km LR7.1 °C/km
700–500 LR6.1 °C/km
Total Totals49.9
LCL879 hPa
LFC1007 hPa
EL145 hPa
Freezing Lvl15,410 ft