Alpharetta, Georgia 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Alpharetta GA
National Weather Service Forecast for:
Alpharetta GA
Issued by: National Weather Service Peachtree City, GA |
Updated: 6:21 am EDT Jun 6, 2025 |
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Today
 Patchy Fog then Chance T-storms
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Tonight
 Chance T-storms then Partly Cloudy
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Saturday
 Chance Showers then Showers Likely
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Saturday Night
 Showers Likely
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Sunday
 Showers
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Sunday Night
 Chance T-storms
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Monday
 Slight Chance Showers then Chance T-storms
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Monday Night
 Showers Likely
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Tuesday
 Showers Likely then T-storms Likely
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Hi 89 °F |
Lo 70 °F |
Hi 87 °F |
Lo 69 °F |
Hi 82 °F |
Lo 67 °F |
Hi 85 °F |
Lo 67 °F |
Hi 82 °F |
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Hazardous Weather Outlook
Today
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A 30 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog between 7am and 9am. Otherwise, mostly sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon. |
Tonight
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A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 70. Southwest wind around 5 mph. |
Saturday
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A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Saturday Night
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Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 69. West wind around 5 mph. Chance of precipitation is 60%. |
Sunday
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Showers and possibly a thunderstorm. High near 82. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. |
Sunday Night
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A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 67. |
Monday
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A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%. |
Monday Night
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A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%. |
Tuesday
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Showers likely before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms likely after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%. |
Tuesday Night
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Showers and thunderstorms likely before 2am, then a chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 60%. |
Wednesday
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A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. |
Wednesday Night
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A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. |
Thursday
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A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86. |
Forecast from NOAA-NWS
for Alpharetta GA.
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Weather Forecast Discussion
808
FXUS62 KFFC 060716
AFDFFC
Area Forecast Discussion
National Weather Service Peachtree City GA
316 AM EDT Fri Jun 6 2025
...Morning Area Forecast Discussion...
.SHORT TERM...
(Today through Saturday)
Issued at 157 AM EDT Fri Jun 6 2025
Key Messages:
- A couple of strong to severe thunderstorms could produce
damaging wind gusts in northwest Georgia between 5 PM Friday
and 1 AM Saturday.
- Another round of strong to severe thunderstorms is possible
across much of north and central Georgia late Saturday
afternoon and evening.
A quiet start to the day with patchy dense fog in north and
central Georgia, which will burn off within a few hours of
sunrise. Warm and humid, but generally rain-free conditions will
prevail through the afternoon across most of the area. One
exception could be across southern portions of central GA where we
may see a few pop-up showers or thunderstorms in the early to mid
afternoon hours. The period of most concern is in the evening and
early overnight hours, when a weak mid-level shortwave and
associated thunderstorms activity will be pushing across the TN
Valley, and may bring a severe weather threat to the area. The
Storm Prediction Center (SPC) has the I-75 corridor north of ATL
in a Slight Risk (Level 2 of 5), with a Marginal Risk (Level 1 of
5) for the rest of north and central GA. The primary hazard with
these storms would be damaging wind gusts given the linear storm
mode, meager deep-layer shear and instability. The most likely
timing for storms would be 6-10PM in NW GA, 10PM-1AM across the
Atlanta area, and after 1AM for areas south though it will be
tough for storms to hold together that long.
Warm and humid conditions continue on Saturday, with another,
more potent mid-level shortwave expected to push across the TN
Valley into Georgia during the afternoon and evening hours. This
wave will support a more favorable environment for severe weather
than on Friday as the timing will coincide with peak heating and
tap into greater instability. While a few showers and storms may
develop ahead of the shortwave, CAM guidance continues to show a
MCS (line of strong storms) along the leading edge of the wave
pushing across most of north and central GA. The primary hazard
with these storms would be damaging winds, but the environment
could also support large hail and a brief tornado. SPC has
maintained a Slight Risk (Level 2 of 5) across all of the area,
and the most likely timing of concern would be the 2PM-10PM
timeframe.
High temperatures each day will be in the upper 80s to around 90,
with dewpoints near 70F making it feel like the mid 90s during
the afternoon. Overnight lows will only drop to the low 70s.
Culver
&&
.LONG TERM...
(Saturday night through Thursday)
Issued at 157 AM EDT Fri Jun 6 2025
Key Messages:
- Diurnally driven showers and thunderstorms expected through
the extended period.
- Best severe storm potential expected Sun through Wed.
No major changes made to the extended forecast. Diurnally driven
showers and thunderstorms expected to continue for the long term
forecast. By Sat night the weak frontal boundary extending across
the Mid MS river valley moves south onto N GA. This front
continues to move south Sun stalling over central/south GA through
the end of next week. By Sat night, upper level zonal flow sets
up over the southeastern states with a strong surface to upper
level ridge extending from the western gulf to the western
Atlantic. This surface to upper level pattern will keep a decent
amount of moisture streaming along the frontal boundary with
shortwave after shortwave moving through. Basically we will
continue to see more scattered to widespread shower and thunder
chances through day 7. With several disturbances forecast to pass
through the upper level flow and interacting with the frontal
boundary could result in enhanced storm coverage/intensity. The
Storm Prediction Center (SPC) has the majority of the CWA under a
slight risk (level 2 of 5) Saturday and under a 15% risk area for
Sunday. Additionally, PWs stay in the 1 to 2 inch range with some
2.5 inch values expected through Thursday.
With all this rain in the forecast, temperatures through the long
term will hover near seasonal norms (give or take 3-5 deg). This
will put highs mainly in the 80s with some lower 90s across
central GA. Lows will be in the 60s to lower 70s.
01
&&
.AVIATION...
(06Z TAFS) Issued at 157 AM EDT Fri Jun 6 2025
VFR conditions to start the 06Z TAF period, but there is
potential for CIG/VIS to reduce to IFR conditions or worse
between 09-13z due to patchy fog. ISO-SCT TSRA possible at CSG
around 20-00Z, with another area of SHRA/TSRA possibly moving
into NW GA and the ATL metro in the 00-06z timeframe. Winds W at
4 to 8 kts during day and light to variable overnight.
//ATL Confidence...06Z Update...
Low confidence in VIS/CIG reductions in fog this morning, and
for SHRA/TSRA this evening. High confidence for all other
elements.
Culver
&&
.PRELIMINARY POINT TEMPS/POPS...
Athens 66 89 70 89 / 10 20 20 50
Atlanta 69 89 71 89 / 10 40 20 60
Blairsville 62 84 65 82 / 20 50 40 70
Cartersville 67 90 69 88 / 10 50 30 70
Columbus 71 90 72 92 / 20 40 20 50
Gainesville 67 88 70 87 / 10 40 20 60
Macon 69 90 72 92 / 20 30 30 50
Rome 68 89 70 87 / 10 60 30 80
Peachtree City 67 89 70 90 / 10 40 20 60
Vidalia 71 89 73 93 / 40 30 20 40
&&
.FFC WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
SHORT TERM...Culver
LONG TERM....01
AVIATION...Culver
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