St. Marys, GA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for St. Marys, GA in one place.
Mostly sunny. High near 86, with temperatures falling to around 84 in the afternoon. North wind 1 to 9 mph.
Local Weather Overview
This forecast page for St. Marys, GA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 14, 2026 12:33 AM EDT.
The active forecast window currently covers Oct 15 to Oct 20, 2026 for St. Marys, GA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 12:33 AM EDT
- Forecast office
- JAX
- Source
- NOAA / NWS
Daily Outlook
This Week in St. Marys
Friday looks like the warmest upcoming period in St. Marys at 89 degrees F.
Saturday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Saturday at about 16 to 21 mph NE.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 12:33 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- JAX
- Radar station
- KJAX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear. Low around 66, with temperatures rising to around 68 overnight. Southeast wind 1 to 8 mph.
Sunny, with a high near 89.
Partly cloudy, with a low around 66.
Mostly sunny, with a high near 74.
Mostly cloudy, with a low around 65.
A chance of rain showers after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.
A chance of rain showers before 2am. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
A chance of rain showers after 8am. Mostly sunny, with a high near 79. Chance of precipitation is 40%.
A chance of rain showers before 2am. Partly cloudy, with a low around 67. Chance of precipitation is 40%.
A chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 79.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Mostly Sunny
|
86°F |
1 to 9 mph
N
|
|
Thursday Night
Oct 15
|
Clear
|
66°F |
1 to 8 mph
SE
|
|
Friday
Oct 16
|
Sunny
|
89°F |
1 to 7 mph
W
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
66°F |
2 to 14 mph
W
|
|
Saturday
Oct 17
|
Mostly Sunny
|
74°F |
16 to 21 mph
NE
|
|
Saturday Night
Oct 17
|
Mostly Cloudy
|
65°F |
15 to 18 mph
NE
|
|
Sunday
Oct 18
|
Partly Sunny then Chance Rain Showers
|
77°F |
16 to 21 mph
NE
|
|
Sunday Night
Oct 18
|
Chance Rain Showers
|
67°F |
12 to 17 mph
NE
|
|
Monday
Oct 19
|
Chance Rain Showers
|
79°F |
14 to 17 mph
NE
|
|
Monday Night
Oct 19
|
Chance Rain Showers
|
67°F |
8 to 16 mph
NE
|
|
Tuesday
Oct 20
|
Chance Rain Showers
|
79°F |
10 to 18 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around St. Marys.