Pago Pago, American Samoa Weather Conditions

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Current Conditions

  • 82°
  • Mostly Cloudy
  • Wind: South 8 mph
  • Humidity: 65%
  • Visibility: 10.0 miles
  • Dew Point: 69°
  • Pressure: 29.95 in. +
  • Heat Index: 86

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Next 12 Hours

8  pm
11  pm
2  am
5  am
8  am
Rain Showers
Rain Showers
Rain Showers
Rain Showers
Clear
Clear
Clear
Clear
Clear
Clear
81°
81°
77°
77°
82°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Rain Showers
  • High: 86 °
  • Low: 77 °
  • Rain Showers
  • Sunday
  • Rain Showers
  • High: 86 °
  • Low: 79 °
  • Rain Showers
  • Monday
  • Chance of a Thunderstorm
  • High: 86 °
  • Low: 75 °
  • Chance of a Thunderstorm
  • Tuesday
  • Chance of a Thunderstorm
  • High: 86 °
  • Low: 77 °
  • Chance of a Thunderstorm
  • Wednesday
  • Partly Cloudy
  • High: 86 °
  • Low: 77 °
  • Partly Cloudy

Forecast for Pago Pago, American Samoa

Updated: 5:00 PM HST on July 25, 2014

  • Friday

    Partly cloudy with rain showers in the afternoon. High of 86F. Winds from the SSW at 10 to 15 mph shifting to the West in the afternoon. Chance of rain 20%.

  • Friday Night

    Overcast with rain showers in the evening, then clear. Low of 75F. Winds less than 5 mph. Chance of rain 20%.

  • Saturday

    Clear in the morning, then mostly cloudy with rain showers. High of 86F. Winds less than 5 mph. Chance of rain 30%.

  • Saturday Night

    Clear with rain showers in the evening, then partly cloudy. Low of 77F. Winds less than 5 mph. Chance of rain 30%.

  • Sunday

    Partly cloudy with rain showers. High of 86F. Winds less than 5 mph. Chance of rain 30%.

  • Sunday Night

    Mostly cloudy with rain showers. Low of 79F. Winds less than 5 mph. Chance of rain 20%.

  • Monday

    Clear in the morning, then overcast with a chance of a thunderstorm and rain. High of 86F. Winds from the SSW at 5 to 10 mph shifting to the WNW in the afternoon. Chance of rain 20%.

  • Monday Night

    Overcast with a chance of a thunderstorm and rain. Low of 75F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday

    Overcast with a chance of a thunderstorm and rain in the afternoon. High of 86F. Winds less than 5 mph. Chance of rain 20%.

  • Tuesday Night

    Partly cloudy with a chance of a thunderstorm. Low of 77F. Winds less than 5 mph. Chance of rain 20%.

  • Wednesday

    Partly cloudy. High of 86F. Winds less than 5 mph.

  • Wednesday Night

    Partly cloudy. Low of 77F. Winds less than 5 mph.

  • Thursday

    Partly cloudy. High of 86F. Winds less than 5 mph.

  • Thursday Night

    Mostly cloudy. Low of 77F. Winds less than 5 mph.

  • Friday

    Partly cloudy with a chance of a thunderstorm. High of 86F. Winds less than 5 mph. Chance of rain 40%.

  • Friday Night

    Overcast with a chance of rain. Low of 79F. Winds from the NNE at 5 to 10 mph. Chance of rain 50% with rainfall amounts near 0.2 in. possible.

  • Saturday

    Mostly cloudy with a chance of a thunderstorm. High of 88F. Winds from the ENE at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.3 in. possible.

  • Saturday Night

    Overcast with a chance of a thunderstorm. Low of 77F. Winds from the ENE at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.4 in. possible.

  • Sunday

    Mostly cloudy with a chance of a thunderstorm. High of 88F. Winds from the ENE at 5 to 10 mph. Chance of rain 40%.

  • Sunday Night

    Partly cloudy with a chance of a thunderstorm. Low of 77F. Winds from the ENE at 5 to 15 mph. Chance of rain 20%.

  • Monday

    Mostly cloudy. High of 86F. Winds from the ENE at 5 to 10 mph.

  • Monday Night

    Partly cloudy. Low of 77F. Winds from the ENE at 5 to 15 mph.

  • Tuesday

    Clear. High of 86F. Winds from the ENE at 5 to 10 mph.

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NWS Forecaster Discussion




Area forecast discussion...typo correction last paragraph 
National Weather Service tiyan GU 
837 am chst Sat Jul 26 2014 


Marianas synopsis...the monsoon trough stretches across the 
marianas. Scattered showers cover portions of the local area. 
This will be a wet weekend for the marianas. 


&& 


Discussion... 
little change to forecast made except for extending the scattered 
showers until around noon today. All models seem to initialize 
well in terms of positioning the circulation near Palau and the 
monsoon trough location. Feel confident in the forecast for 
today. 


An interesting solution is working its way through all the 
models. Even obscure models from Korea...Taiwan and Australia let 
alone the usual GFS...European model (ecmwf) and navgem. There is a circulation 
north of Kosrae this morning. These models do see it and to a 
varying degree develop it and move it towards the marianas. With 
this agreement it is getting more likely that something will move 
our way. The next question is what will it look like when it gets 
here. GFS GOES bonkers with it making it a typhoon over the 
northern marianas. The other models do not do this making it a 
tropical depression at best. Navgem has an interesting solution 
in that the big circulation near Palau will only have a few days 
of glory. By Tuesday the monsoon starts flowing into the Kosrae 
circulation leaving the other one weak. Navgem only makes it 
stronger after it passes west of the marianas. 


Not certain about the particulars so forecast has not changed 
much but things could drastically change if the Kosrae 
circulation picks up steam. Even if the Kosrae circulation does 
not become strong in terms of wind it will probably push 
scattered showers over the local area. Scattered showers are in 
the forecast through Monday night. If things do not change in the 
models...scattered showers could be extended through at least 
Friday. 


&& 


Marine... 
a southwest and an east swell will persist through the forecast. 
The east swell is expected to increase a foot by tonight. The 
west swell is at three feet today. This is expected to increase 
through the weekend reaching six feet Sunday night. This may lead 
to hazardous surf conditions on west facing reefs at that time. 
This could change depending on how much wind is associated with 
the Palau circulation as it treks across the Philippine Sea. It 
still is not certain what kind of wind field will be associated 
with the circulation so fetch generation areas are unknown. If 
the Kosrae circulation saps this circulation as mentioned above 
then things could change. The best thing to do is keep watching 
the forecast as it most likely will change. 


&& 


Eastern micronesia... 
active weather associated with the monsoon trough remains over 
much of eastern micronesia. However...recent satellite imagery 
and model guidance suggests a downward trend in shower coverage 
for Kosrae and Majuro so incorporated slightly drier weather into 
the short term. Models indicate a continued drying trend for 
Kosrae and Majuro tonight as ridging begins to develop over the 
Marshall Islands and Kosrae state. Deep convection associated 
with a possible embedded circulation within the monsoon trough 
will affecting Pohnpei today. Forecast for Pohnpei is heavily 
contingent on the possible development of a tropical cyclone over 
the weekend. The weak surface circulation is currently east of 
Pohnpei. European model (ecmwf) is coming more into line with GFS solution in 
developing this system over the next few days. 


Continued high surf advisory for Pohnpei. Wave watch model 
guidance and satellite altimetry indicates a steady decline in 
sea heights in Kosrae state today. However...if the disturbance 
east of Pohnpei develops faster than anticipated...strong winds 
on the south side of the system could generate west swell which 
would impact Kosrae early next week. 


&& 


Western micronesia... 
monsoon trough axis and zone of low-level convergence has shifted 
primarily north of Chuuk. Showers are expected to redevelop 
farther south over Chuuk during the day today so scattered 
showers were continued for today and tonight. Further development 
of the disturbance near Pohnpei could maintain scattered showers 
over Chuuk through Sunday night as it passes to the north of 
Chuuk on Tuesday. Tropical disturbance 96w remains east of Koror 
but most of the heavier showers are found west of Koror waters. 
Several more rounds of showers and thunderstorms are expected at Koror and 
Yap today and tonight. Ridging is prognosticated to develop in the wake 
of 96w as it moves north over the next several days. This will 
usher in drier weather for Koror and Yap a little sooner than 
expected previously. 


The main threat from invest 96w will be west to southwest swell 
generated by strong winds south of the center. A high surf advisory 
continues for Yap and Koror and will likely remain through the 
weekend. Swell generated by a recent monsoon surge and 96w will keep 
surf hazardous on Chuuk through Monday. 


&& 


Gum watches/warnings/advisories... 
GU...none. 
Marianas waters...none. 
&& 


$$ 


Ziobro/Williams 



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