Swannanoa

• Tonight

  61°low

  Partly Cloudy then Slight Chance Rain Showers

  A slight chance of rain showers after 3am. Partly cloudy, with a low around 61. East northeast wind 2 to 9 mph. Chance of precipitation is 20%.

  Wind ENE 2 to 9 mph · 15% chance of precipitation

• Tuesday

  81°high

  Mostly Sunny

  Mostly sunny, with a high near 81. East southeast wind 6 to 9 mph.

  Wind ESE 6 to 9 mph · 14% chance of precipitation

• Tuesday Night

  59°low

  Partly Cloudy

  Partly cloudy, with a low around 59. East wind 2 to 6 mph.

  Wind E 2 to 6 mph · 3% chance of precipitation

• Wednesday

  85°high

  Sunny

  Sunny, with a high near 85. East northeast wind 1 to 7 mph.

  Wind ENE 1 to 7 mph · 12% chance of precipitation

• Wednesday Night

  59°low

  Mostly Clear

  Mostly clear, with a low around 59. East northeast wind 1 to 6 mph.

  Wind ENE 1 to 6 mph · 10% chance of precipitation

• Thursday

  85°high

  Sunny then Slight Chance Showers And Thunderstorms

  A slight chance of showers and thunderstorms between 2pm and 4pm, then a chance of showers and thunderstorms. Sunny, with a high near 85. Chance of precipitation is 30%.

  Wind NE 1 to 5 mph · 28% chance of precipitation

• Thursday Night

  61°low

  Chance Showers And Thunderstorms then Partly Cloudy

  A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

  Wind NE 3 mph · 25% chance of precipitation

• Friday

  87°high

  Mostly Sunny then Slight Chance Showers And Thunderstorms

  A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87.

  Wind NNE 5 mph · 24% chance of precipitation

• Friday Night

  63°low

  Slight Chance Showers And Thunderstorms then Mostly Clear

  A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 63.

  Wind NNW 3 mph · 24% chance of precipitation

• Saturday

  86°high

  Sunny then Chance Showers And Thunderstorms

  A chance of showers and thunderstorms after 2pm. Sunny, with a high near 86. Chance of precipitation is 30%.

  Wind SSW 5 mph · 29% chance of precipitation

• Saturday Night

  63°low

  Chance Showers And Thunderstorms then Partly Cloudy

  A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.

  Wind SW 5 mph · 29% chance of precipitation

• Sunday

  86°high

  Slight Chance Rain Showers then Chance Showers And Thunderstorms

  A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 50%.

  Wind SW 5 mph · 48% chance of precipitation

• Sunday Night

  64°low

  Chance Showers And Thunderstorms

  A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.

  Wind WNW 3 mph · 48% chance of precipitation

• Monday

  80°high

  Showers And Thunderstorms Likely

  A chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 80.

  Wind W 2 to 7 mph · 68% chance of precipitation

The reasoning behind the forecast, in the forecaster’s own words. In this region the elevation detail that never reaches a point forecast usually shows up here.

000
FXUS62 KGSP 141830
AFDGSP

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
230 PM EDT Mon Sep 14 2026

.WHAT HAS CHANGED...
The aviation discussion was updated for the 18z TAFs, otherwise 
no significant changes were needed.

&&

.KEY MESSAGES...
1. Relatively warm late summer weather will persist through the
week, with low risk for significant weather.

&&

.DISCUSSION...
Key message 1: Relatively warm late summer weather will persist
through the week, with low risk for significant weather.

The weather is still looking fairly quiet thru the week with a
fairly low chance for any high impact weather. We have a back-door 
cold front moving down from the north later this afternoon/evening
which could help produce a few showers, but that's about it.  

An upper ridge builds eastward over our region over the next 24 
to 48 hrs and helps keep the convective environment generally 
unfavorable/suppressed with most of the area remaining dry. With
the fropa later in the day today, we get one more hot day with 
high temps 5 to 10 degrees above normal. We still have the poten-
tial for some weak, dry, cold air damming as broad surface high 
pressure moves from New England on Tuesday to a position off the 
coast of New England and the Maritime Provinces on Wed. There 
could be some shallow moisture within the ELY low-level flow on 
Tues that helps keep temperatures around normal with some increase 
in low clouds, but there will be minimal forcing for precip and 
any appreciable moisture doesn't hang around for long. This should 
result in temps warming back above normal on Wed, with highs back 
in the lower 90s east of the mtns by the end of the week. As the 
airmass modifies and warms, we expect a return of high elevation 
scattered diurnal showers and thunderstorms from Thurs thru next 
weekend.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
At KCLT and elsewhere: Expect mostly dry, VFR conditions to prevail 
thru the 18z TAF period. The main exception will be a few hrs of MVFR
cigs over the Upstate sites and KAVL late tomorrow morning, and the 
potential for mtn valley fog and low stratus to reach KAVL overnight. 
Any fog/low stratus that does materialize should dissipate by 13z or 
so and the MVFR cigs should sct out around noon. Otherwise, winds will  
favor a N to NE direction this afternoon and then turn more E to NE 
this evening and strengthen a bit behind a weak backdoor cold front. 
Winds at KAVL should go light and VRB overnight and then toggle around 
to SELY later tomorrow morning. 

Outlook: Mostly dry conditions are expected to persist thru the middle 
of the week. Shower chances and associated restrictions increase later 
in the week. Mtn valley fog and low stratus is possible each morning 
thru the week.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.

&&

$$

JPT