Pago Pago, American Samoa Weather Conditions

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Current Conditions

  • 85°
  • Scattered Clouds
  • Wind: South 13 mph
  • Humidity: 57%
  • Visibility: 10.0 miles
  • Dew Point: 68°
  • Pressure: 29.91 in. 0
  • Heat Index: 88

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Next 12 Hours

2  pm
5  pm
8  pm
11  pm
2  am
Clear
Clear
Mostly Cloudy
Mostly Cloudy
Clear
Clear
Partly Cloudy
Partly Cloudy
Clear
Clear
84°
81°
79°
77°
75°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Partly Cloudy
  • High: 89 °
  • Low: 70 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 82 °
  • Low: 72 °
  • Partly Cloudy
  • Sunday
  • Mostly Cloudy
  • High: 82 °
  • Low: 72 °
  • Mostly Cloudy
  • Monday
  • Partly Cloudy
  • High: 82 °
  • Low: 72 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 82 °
  • Low: 70 °
  • Partly Cloudy

Forecast for Pago Pago, American Samoa

Updated: 11:00 PM HST on November 27, 2014

  • Friday

    Partly cloudy. High of 84F. Winds from the SW at 5 to 10 mph.

  • Friday Night

    Partly cloudy in the evening, then clear. Low of 70F. Winds less than 5 mph.

  • Saturday

    Clear in the morning, then partly cloudy. High of 82F. Winds less than 5 mph.

  • Saturday Night

    Partly cloudy. Low of 72F. Winds less than 5 mph.

  • Sunday

    Partly cloudy in the morning, then overcast. High of 82F. Winds from the SW at 5 to 10 mph shifting to the NNW in the afternoon.

  • Sunday Night

    Overcast in the evening, then partly cloudy. Low of 72F. Winds from the NNE at 5 to 10 mph.

  • Monday

    Partly cloudy. High of 82F. Winds less than 5 mph.

  • Monday Night

    Overcast in the evening, then partly cloudy. Low of 72F. Winds less than 5 mph.

  • Tuesday

    Mostly cloudy. High of 82F. Winds from the North at 5 to 10 mph.

  • Tuesday Night

    Mostly cloudy. Low of 70F. Winds less than 5 mph.

  • Wednesday

    Overcast. High of 81F. Winds less than 5 mph.

  • Wednesday Night

    Overcast. Low of 72F. Winds less than 5 mph.

  • Thursday

    Overcast with a chance of rain. High of 82F. Winds from the NNW at 5 to 10 mph. Chance of rain 50%.

  • Thursday Night

    Overcast. Low of 72F. Winds from the NW at 5 to 10 mph.

  • Friday

    Partly cloudy. High of 81F. Winds from the NW at 5 to 10 mph.

  • Friday Night

    Partly cloudy. Low of 72F. Winds less than 5 mph.

  • Saturday

    Partly cloudy with a chance of a thunderstorm. High of 82F. Winds less than 5 mph. Chance of rain 40%.

  • Saturday Night

    Partly cloudy with a chance of a thunderstorm. Low of 72F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday

    Clear with a chance of a thunderstorm. High of 82F. Winds less than 5 mph. Chance of rain 20%.

  • Sunday Night

    Partly cloudy with a chance of a thunderstorm. Low of 72F. Winds less than 5 mph. Chance of rain 20%.

  • Monday

    Partly cloudy with a chance of rain. High of 84F. Winds less than 5 mph. Chance of rain 20%.

  • Monday Night

    Partly cloudy with a chance of a thunderstorm. Low of 72F. Winds less than 5 mph. Chance of rain 40%.

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NWS Forecaster Discussion




Area forecast discussion 
National Weather Service tiyan GU 
523 am chst Sat Nov 29 2014 


Marianas synopsis... 
a small disturbance along a shear-line fragment is generating 
showers and thunderstorms 50 to 150 miles southeast through 
southwest of Guam...with plenty of distant lightning visible 
through the night from Guam. Another shear-line segment has a few 
showers along it from near Saipan southwestward to about 130 miles 
west of Guam. In between...dry air has spread over Guam and Rota 
with dewpoints in the lower 70s. Guam buoys are indicating seas of 
8 to 9 feet. Radar winds are still 25-30 knots at 2000 feet and above 
with winds gusting over 20 knots at Guam and over 25 knots at Saipan. 


&& 


Discussion... 
it appears the bulk of the showers will by-pass the marianas to 
the southwest this morning...leaving isolated showers for the next 
few days. Overall...very little change made to the previous 
forecast except to increase cloudiness for today...and bump up 
winds a bit today to account for current conditions. 


Models are still grappling with the potential for tropical 
cyclone formation over the next week or so...with a different 
plan with each model run. For the last couple of runs...the GFS 
and European model (ecmwf) have been developing a cyclone in the Chuuk-Pohnpei 
region and moving it generally west-northwest. The European model (ecmwf) takes a developing 
cyclone between Yap and Koror this coming Wednesday...then forms a 
second cyclone between Yap and Chuuk the following Monday. The 12z 
GFS forms twin circulations south of Chuuk and Pohnpei Sunday 
night and Monday...then merges them Tuesday night and moves the 
result as a typhoon between Yap and Guam Wednesday night and Thursday. 
But the earlier 06z GFS takes the storm much further south...near 
Yap. 


Since satellite shows plenty of disturbed weather around Pohnpei 
and Kosrae...cyclone development seems quite possible the next few 
days...but details are far from settled. As a result...forecast 
confidence beyond the next 3 days or so is low...and residents of 
the marianas should keep tabs on any changes to the forecast for 
the next few days. 


&& 


Marine... 
Small Craft Advisory is still in effect...as winds are still in 
the 20-25 knots range this morning out over the water...and seas are 
near 9 feet at the ritidian buoy. But models are consistent in 
bringing winds down to 15-20 knots by late afternoon when the 
advisory expires. 


&& 


Eastern micronesia... 
satellite imagery shows convection beginning to increase across the 
Marshall Islands in response to a trade-wind convergence zone 
setting up over the region. Models are in good agreement in 
increasing showers through today and tonight so advanced onset of 
scattered showers to tonight. The trade-wind convergence zone is 
expected to break down early next week with scattered showers ending 
late Monday. The developing tropical disturbance southwest of Kosrae 
is expected to move westward over the weekend bringing scattered 
showers and isolated thunderstorms to Pohnpei today and tonight. 
Models indicate drier conditions at Kosrae tonight through Tuesday 
as the tropical disturbance moves farther away and showers 
associated with trade-wind convergence stay to the north. For 
Pohnpei...long term forecast remains difficult with low forecast 
confidence. An extended active pattern appears likely in model 
output but will wait to see what the tropical disturbance to the 
southeast will do over the weekend before extending scattered 
showers through early next week. 


A vigorous North Pacific low pressure system is generating large 
north-northwest swell that will eventually impact eastern micronesia 
beginning early Monday. The potential for advisory-level surf on 
north facing exposures certainty exists early next week especially 
for Kosrae and Majuro. Fortunately...the moon will be at first 
quarter phase limiting astronomical high tides. Nonetheless...this 
will be a significant north-northwest swell that will likely cause 
hazardous surf to begin Monday for Kosrae and Majuro. 


&& 


Western micronesia... 
the tropical disturbance southeast of Pohnpei is expected to usher 
in scattered showers over Chuuk by tonight. Model solutions are 
quite divergent after forecast hour 36 so forecast confidence is low regarding 
a lingering active weather pattern at Chuuk Monday through Wednesday. 
For Yap ad Koror...forecast is highly dependent on the evolution 
of the tropical disturbance southeast of Pohnpei. Latest GFS brings 
the system north of Yap late Wednesday while European model (ecmwf) brings it between 
Yap and Koror. Only made minor adjustments to the forecast until 
models come into a better consensus. In the short term...infrared 
imagery indicated markedly drier air filtering into Yap state with 
only a slight chance of showers expected at Yap today. 


&& 


Gum watches/warnings/advisories... 
GU...none. 
Marianas waters...Small Craft Advisory until 5 PM chst this afternoon 
for pmz151>154. 


&& 


$$ 


Middlebrooke/Williams 



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