Pago Pago, American Samoa Weather Conditions

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Current Conditions

  • 77°
  • Scattered Clouds
  • Wind: ESE 5 mph
  • Humidity: 82%
  • Visibility: 10.0 miles
  • Dew Point: 71°
  • Pressure: 29.96 in. 0

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Next 12 Hours

5  am
8  am
11  am
2  pm
5  pm
Overcast
Overcast
Overcast
Overcast
Clear
Clear
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
77°
81°
84°
86°
84°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Wednesday
  • Mostly Cloudy
  • High: 86 °
  • Low: 77 °
  • Mostly Cloudy
  • Thursday
  • Partly Cloudy
  • High: 86 °
  • Low: 77 °
  • Partly Cloudy
  • Friday
  • Partly Cloudy
  • High: 86 °
  • Low: 77 °
  • Partly Cloudy
  • Saturday
  • Partly Cloudy
  • High: 86 °
  • Low: 77 °
  • Partly Cloudy
  • Sunday
  • Chance of a Thunderstorm
  • High: 86 °
  • Low: 77 °
  • Chance of T-Storms

Forecast for Pago Pago, American Samoa

Updated: 11:00 PM HST on July 22, 2014

  • Wednesday

    Overcast in the morning, then mostly cloudy. High of 86F. Winds less than 5 mph.

  • Wednesday Night

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

  • Thursday

    Clear in the morning, then mostly cloudy. High of 86F. Winds less than 5 mph.

  • Thursday Night

    Overcast with rain showers in the evening, then partly cloudy. Low of 77F. Winds less than 5 mph. Chance of rain 20%.

  • Friday

    Clear in the morning, then partly cloudy. High of 86F. Winds from the NW at 5 to 10 mph.

  • Friday Night

    Partly cloudy with a chance of rain. Low of 77F. Winds from the NW at 5 to 10 mph. Chance of rain 50%.

  • Saturday

    Partly cloudy. High of 86F. Winds from the NNW at 5 to 10 mph.

  • Saturday Night

    Partly cloudy with a chance of rain, then a chance of a thunderstorm and rain after midnight. Low of 77F. Winds from the West at 5 to 10 mph. Chance of rain 50%.

  • Sunday

    Partly cloudy with a chance of rain. High of 86F. Winds from the WNW at 5 to 10 mph. Chance of rain 40%.

  • Sunday Night

    Mostly cloudy with a chance of rain. Low of 77F. Winds from the WNW at 5 to 10 mph. Chance of rain 20%.

  • Monday

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

  • Monday Night

    Mostly cloudy with a chance of rain. Low of 77F. Winds less than 5 mph. Chance of rain 50%.

  • Tuesday

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

  • Tuesday Night

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

  • Wednesday

    Partly cloudy with a chance of a thunderstorm. High of 86F. Winds from the North at 5 to 10 mph. Chance of rain 40%.

  • Wednesday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 77F. Winds from the ENE at 5 to 10 mph. Chance of rain 40%.

  • Thursday

    Overcast with a chance of a thunderstorm. High of 86F. Winds from the ENE at 5 to 10 mph. Chance of rain 40%.

  • Thursday Night

    Overcast with a chance of a thunderstorm. Low of 77F. Winds from the East at 5 to 10 mph. Chance of rain 20%.

  • Friday

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

  • Friday Night

    Partly cloudy. Low of 77F. Winds from the East at 5 to 10 mph.

  • Saturday

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

  • Saturday Night

    Clear. Low of 77F. Winds from the East at 10 to 15 mph.

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NWS Forecaster Discussion



AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TIYAN GU
525 PM CHST WED JUL 23 2014

MARIANAS SYNOPSIS...
VAPOR CHANNEL SAT IMAGERY SHOWS THE UPPER-LEVEL TROUGH STILL
ORIENTED NE-SW JUST EAST OF THE ISLANDS...AND STILL HELPING TO
TRIGGER ISOLATED THUNDERSTORMS. MEANWHILE...A BROAD AND WEAK
CIRCULATION ON THE MONSOON TROUGH IS CENTERED WEST OF CHUUK NEAR
7N148W...WITH THE CENTER EXPOSED AND DEEP CONVECTION ON THE
WESTERN AND EASTERN EXTREMITIES OF ITS LARGE CIRCULATION. THE
DISTURBANCE NORTH OF YAP HAS BEEN DOWNGRADED BY JTWC TO LOW
POTENTIAL FOR DEVELOPMENT...AND INDEED IT APPEARS FROM THE
SATELLITE LOOP THAT THE SURFACE CIRCULATION MAY HAVE OPENED BACK
UP INTO THE MONSOON TROUGH.

DISCUSSION...
WITH THE UPPER TROUGH SLOW TO MOVE WEST ACROSS THE ISLANDS...HAVE
EXTENDED ISOLATED THUNDERSTORMS THROUGH TONIGHT. OTHERWISE...NO
CHANGES MADE TO THE FORECAST AS SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS STILL LOOK GOOD FOR THE END OF THE WEEK--ONE WAY OR
THE OTHER. ECMWF AND GFS ARE STILL FAR APART...WITH THE HAWKISH
GFS AGGRESSIVELY DEVELOPING BOTH THE YAP AND CHUUK DISTURBANCES
AND BRINGING HEAVY RAIN AND STRONG WINDS TO THE MARIANAS AS THE
TWO SYSTEMS INTERACT. THE MORE-REALISTIC ECMWF BRINGS THE MONSOON
TROUGH NORTH INTO THE MARIANAS WITH SCATTERED LOCALLY HEAVY
SHOWERS FOR THE WEEKEND BUT RELATIVELY LITTLE WIND. STILL LEANING
HEAVILY TOWARD THE ECMWF AND WATCHING DEVELOPMENTS CAREFULLY.

MARINE...
FAIRLY STEADY MARINE CONDITIONS SHOULD PERSIST THE NEXT COUPLE OF
DAYS WITH GENTLE TO MODERATE WINDS AND 5-6 FT SEAS. AFTER THAT IT
ALL DEPENDS ON WHAT KIND OF WEATHER DEVELOPS OVER THE WEEKEND.

EASTERN MICRONESIA...
A QUIET WEATHER PATTERN WILL PERSIST OVER MAJURO THROUGH TONIGHT. 
MODELS SUGGEST THE DEVELOPMENT OF A STRONG CONVERGENCE ZONE OVER THE 
MARSHALL ISLANDS RELATED TO A MONSOON SURGE ALONG THE EQUATOR
SOUTH OF POHNPEI AND CHUUK AND AN APPROACHING SURFACE TROUGH FROM
THE EAST. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE
EXPECTED TO COMMENCE LATE THURSDAY AND LAST THROUGH FRIDAY NIGHT.
DRIER CONDITIONS AT MAJURO ARE INDICATED OVER THE WEEKEND. ACTIVE
WEATHER ASSOCIATED WITH THE MONSOON TROUGH WILL CONTINUE TO AFFECT
POHNPEI AND KOSRAE THROUGH THURSDAY. KOSRAE IS ON THE EASTERN EDGE
OF THE HEAVIEST SHOWERS BUT NEW CONVECTIVE DEVELOPMENT IS OBSERVED
IN VISIBLE SAT IMAGERY OVER KOSRAE WATERS. WEATHER WILL IMPROVE AS
RIDGING BUILDS OVER KOSRAE AND POHNPEI STATES. THE MONSOON SURGE
SOUTH OF CHUUK AND POHNPEI WILL GENERATE AN APPRECIABLE SOUTHWEST
SWELL THAT WILL IMPACT POHNPEI THURSDAY AND THURSDAY NIGHT.
HOWEVER...SURF PRODUCED BY THE SWELL AND WIND WAVES IS EXPECTED TO
REMAIN JUST BELOW HAZARDOUS THURSDAY NIGHT AND FRIDAY.

WESTERN MICRONESIA...
EXPANSIVE DEEP CONVECTION ASSOCIATED WITH THE MONSOON TROUGH IS
JUST TO THE SOUTHEAST OF CHUUK. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS WILL MOVE OVER CHUUK THURSDAY AND THURSDAY NIGHT
THEN BEGIN TO LIFT NORTHWARD ALONG WITH THE MONSOON TROUGH FRIDAY.
A LESS ACTIVE PATTERN WILL BEGIN FRIDAY AND LIKELY LAST THROUGH
THE WEEKEND.

THE TROPICAL DISTURBANCE NORTH OF KOROR HAS BEEN HEAVILY SHEARED 
OVER THE PAST 24 HOURS AND IS NO LONGER THE PRIMARY THREAT TO KOROR 
AND PALAU. MODELS BRING THE MONSOON TROUGH SOUTHWARD OVER YAP FRIDAY 
AND FRIDAY NIGHT. MODELS HAVE EXHIBITED RUN-TO-RUN CONSISTENCY 
DISCREPANCIES REGARDING THE SYNOPTIC PATTERN AND MONSOON FEATURE. 
MODELS DO BACK OFF QPF AND SEAS A BIT OVER THE WEEKEND SO TUNED 
FORECAST DOWNWARD AT YAP AND KOROR FOR THE WEEKEND TIME FRAME. 
NONETHELESS...A MONSOON SURGE EVENT IS STILL EXPECTED TO DEVELOP 
OVER THE NEXT FEW DAYS BUT STRONGEST WINDS AND HIGHEST SEAS HAVE 
BEEN DELAYED UNTIL THE WEEKEND. WIND DIRECTION AT YAP AND KOROR IS 
STILL DIFFICULT TO DETERMINE AND DEPENDS ON EVENTUAL LOCATION OF 
MONSOON TROUGH AXIS OVER THE NEXT FEW DAYS. LATEST ECMWF TAKES THE 
TROUGH A BIT FARTHER SOUTH THAN PREVIOUS RUNS SO EAST WINDS COULD 
OCCUR AT YAP FRIDAY AND FRIDAY NIGHT. SCATTEROMETER DATA SHOWS MORE 
SIGNIFICANT BUT SMALL SWELL GENERATION REGION ORIENTED MORE TOWARD 
YAP SO REDUCED SEAS FOR KOROR IN THE SHORT TERM. A SPECIAL WEATHER 
STATEMENT WAS ISSUED THIS MORNING IN ADVANCE OF MONSOON EVENT. 
HAZARDOUS SURF CRITERIA WILL LIKELY OCCUR CLOSER TO THE WEEKEND.

&&

.GUM WATCHES/WARNINGS/ADVISORIES...
GU...NONE.
MARIANAS WATERS...NONE.
&&

$$

MIDDLEBROOKE/WILLIAMS


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