Agana Heights, Guam Weather Conditions

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Current Conditions

  • 81°
  • Mostly Cloudy
  • Wind: East 8 mph
  • Humidity: 88%
  • Visibility: 10.0 miles
  • Dew Point: 77°
  • Pressure: 29.78 in. +
  • Heat Index: 88

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Next 12 Hours

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81°
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86°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Friday
  • Thunderstorm
  • High: 90 °
  • Low: 79 °
  • Thunderstorm
  • Saturday
  • Thunderstorm
  • High: 86 °
  • Low: 79 °
  • T-Storms
  • Sunday
  • Thunderstorm
  • High: 86 °
  • Low: 84 °
  • T-Storms
  • Monday
  • Thunderstorm
  • High: 88 °
  • Low: 84 °
  • T-Storms
  • Tuesday
  • Chance of Rain
  • High: 88 °
  • Low: 79 °
  • Chance of Rain

Forecast for Agana Heights, Guam

Updated: 7:00 PM ChST on July 24, 2014

  • Thursday

    Partly cloudy with rain showers. High of 90F with a heat index of 99F. Winds from the ESE at 5 to 15 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy with rain showers. Low of 79F. Winds from the ESE at 5 to 10 mph. Chance of rain 20%.

  • Friday

    Partly cloudy with rain showers. High of 90F with a heat index of 95F. Winds from the ESE at 10 to 15 mph. Chance of rain 20%.

  • Friday Night

    Partly cloudy with thunderstorms and rain showers. Low of 79F. Winds from the SSE at 5 to 10 mph. Chance of rain 50%.

  • Saturday

    Partly cloudy with thunderstorms and rain showers. High of 86F with a heat index of 95F. Winds from the SSW at 10 to 15 mph. Chance of rain 50%.

  • Saturday Night

    Partly cloudy with thunderstorms and rain showers. Low of 79F. Winds from the SW at 10 to 15 mph. Chance of rain 50%.

  • Sunday

    Partly cloudy with thunderstorms and rain showers in the morning, then overcast with thunderstorms. High of 86F with a heat index of 93F. Breezy. Winds from the SW at 10 to 20 mph. Chance of rain 50% with rainfall amounts near 0.7 in. possible.

  • Sunday Night

    Overcast with a chance of rain, then a chance of a thunderstorm and rain after midnight. Low of 84F with a heat index of 93F. Breezy. Winds from the SW at 15 to 25 mph. Chance of rain 50%.

  • Monday

    Overcast with a chance of a thunderstorm and rain, then thunderstorms in the afternoon. High of 88F with a heat index of 97F. Breezy. Winds from the SW at 20 to 25 mph. Chance of rain 80% with rainfall amounts near 1.1 in. possible.

  • Monday Night

    Overcast with a chance of a thunderstorm. Low of 84F with a heat index of 93F. Windy. Winds from the WSW at 25 to 30 mph. Chance of rain 70% with rainfall amounts near 0.7 in. possible.

  • Tuesday

    Overcast with a chance of rain. High of 88F with a heat index of 99F. Windy. Winds from the WSW at 25 to 30 mph. Chance of rain 60%.

  • Tuesday Night

    Mostly cloudy with a chance of a thunderstorm. Low of 79F. Windy. Winds from the WSW at 30 to 35 mph. Chance of rain 50% with rainfall amounts near 0.3 in. possible.

  • Wednesday

    Overcast with a chance of a thunderstorm. High of 88F with a heat index of 99F. Windy. Winds from the WSW at 30 to 35 mph. Chance of rain 70% with rainfall amounts near 0.8 in. possible.

  • Wednesday Night

    Overcast with a chance of a thunderstorm. Low of 79F. Windy. Winds from the WSW at 30 to 40 mph. Chance of rain 70% with rainfall amounts near 1.4 in. possible.

  • Thursday

    Overcast with a chance of a thunderstorm. High of 88F. Winds from the WSW at 35 to 40 mph. Chance of rain 80% with rainfall amounts near 0.9 in. possible.

  • Thursday Night

    Overcast with a chance of a thunderstorm. Low of 79F. Windy. Winds from the SW at 30 to 40 mph. Chance of rain 70% with rainfall amounts near 0.8 in. possible.

  • Friday

    Overcast with a chance of a thunderstorm. High of 88F. Breezy. Winds from the SSW at 10 to 30 mph. Chance of rain 40%.

  • Friday Night

    Mostly cloudy. Low of 84F. Winds from the SSW at 10 to 15 mph.

  • Saturday

    Overcast with a chance of a thunderstorm. High of 86F. Winds from the SSW at 10 to 15 mph. Chance of rain 40%.

  • Saturday Night

    Overcast with a chance of a thunderstorm. Low of 77F. Winds from the SW at 10 to 15 mph. Chance of rain 40%.

  • Sunday

    Mostly cloudy. High of 86F. Winds from the SSW at 10 to 15 mph.

  • Sunday Night

    Partly cloudy. Low of 82F. Winds from the SW at 10 to 15 mph.

  • Monday

    Clear. High of 84F. Winds from the SSW at 10 to 15 mph.

  • Monday Night

    Clear. Low of 82F. Breezy. Winds from the SW at 10 to 25 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Maite, Maite, GU

Updated: 10:18 PM ChST

Temperature: 81.3 °F Dew Point: 78 °F Humidity: 91% Wind: SE at 4.0 mph Pressure: 29.79 in Hourly Precipitation: 0.02 in Heat Index: 90 °F Graphs

Location: Ordot Dump, Chalan Pago Ordot

Updated: 10:17 PM ChST

Temperature: 81.3 °F Dew Point: 78 °F Humidity: 90% Wind: SE at 2.0 mph Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

Location: Perezville, Tamuning, Guam

Updated: 10:15 PM ChST

Temperature: 82.0 °F Dew Point: 78 °F Humidity: 87% Wind: ENE at 3.0 mph Pressure: 29.67 in Hourly Precipitation: 0.01 in Heat Index: 91 °F Graphs

Location: Mangilao, Mangilao, GU

Updated: 10:17 PM ChST

Temperature: 80.9 °F Dew Point: 73 °F Humidity: 78% Wind: NE at 3.0 mph Pressure: 29.78 in Hourly Precipitation: 0.02 in Heat Index: 86 °F Graphs

Location: Jeffs Pirates Cove, Guam, Ipan Talofofo, GU

Updated: 10:17 PM ChST

Temperature: 84.2 °F Dew Point: 79 °F Humidity: 85% Wind: ENE at 13.0 mph Pressure: 29.72 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: Ypaopao Estates, Dededo

Updated: 10:16 PM ChST

Temperature: 81.5 °F Dew Point: 78 °F Humidity: 88% Wind: SE at 2.9 mph Pressure: 29.35 in Hourly Precipitation: 0.00 in Heat Index: 89 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service tiyan GU 
655 PM chst Thursday Jul 24 2014 


Marianas synopsis... 
water vapor satellite imagery shows the upper trough moving west 
over the marianas..with isolated thunderstorms associated with it 
mainly west of Tinian and Saipan. Visible imagery shows an active 
monsoon trough south of the region...anchored by weak circulations 
between Yap and Koror...and west of Chuuk. 


&& 


Discussion... 
European model (ecmwf) and GFS remain far apart...with the GFS still spinning up 
a pair a tropical storms or typhoons north of Yap and Chuuk...with 
the Chuuk storm turning northwest through the marianas north of Saipan 
around the middle of next week. The more consistent and realistic 
European model (ecmwf) still develops the western system while lifting the monsoon 
trough slowly northward through the marianas over the weekend...and 
this is the basis of the forecast for the next week. Have extended 
scattered showers through Monday night...and isolated thunderstorms 
through Wednesday night. Of course...with such disagreement 
between the models...forecast confidence in winds and seas is 
rather low. If a strong tropical cyclone does indeed form north of 
Chuuk as depicted by the GFS...winds and seas could be much higher 
than currently forecast late this weekend into next week. 
Confidence in the rain forecast is somewhat higher...as both models 
would bring up to 7 inches of rain by next Wednesday. 


&& 


Marine... 
have closely followed European model (ecmwf) winds...and kept the west-southwest 
swell at 4 feet the next 7 days based on persistent southwest 
monsoon flow across Yap and Palau in the European model (ecmwf). This brings 
combined seas up to 7-8 feet over the weekend into early next 
week. But again...if a tropical storm forms as in the GFS...winds 
and seas could be higher next week. 


&& 


Updated to include micronesia discussion 


Eastern micronesia... 
a monsoon trough meanders eastward from western micronesia to a weak 
circulation centered north of Kosrae at 9n163e and then turns 
southeastward to end at eq165e. Weaker winds near the trough axis 
will trigger isolated convection near Pohnpei and Kosrae through 
tonight. As the trough slowly lifts northward on Friday...stronger 
monsoon winds south of the trough will increase shower coverage for 
both locales. Farther east...moderate to fresh trades are filtering 
westward across the Marshall Islands. A trade-wind disturbance 
embedded within these trades is going to produce a period of showery 
weather for Majuro until Saturday afternoon. This same disturbance 
will also prolong wet weather for Kosrae and Pohnpei through Saturday 
evening. After the passage of this disturbance through the region by 
early next week...drier moderate trades could bring back fair 
weather across the region from east to west. 


The first set of swell generated by monsoon winds south of the 
circulation near Chuuk is arriving at Pohnpei and Kosrae this 
evening. Anticipate this to cause high surf for these places over 
the next couple of days. 


&& 


Western micronesia... 
a monsoon trough extends east-southeastward from the Philippine Sea 
through a tropical disturbance centered northwest of Koror at 10n133e 
to another one centered west of weno island in Chuuk state near 
7n158e. Latest ascat satellite imagery reveals fresh monsoon winds 
developing south of both disturbances across the Republic of Palau 
and Chuuk state. These converging monsoon winds are generating 
pockets of deeper convection near Koror and Chuuk. Therefore 
inclement weather is anticipated for both locations for the next few 
days...especially Chuuk. However if the center of the second 
disturbance start to shift a bit westward away from Chuuk on 
Friday...shower coverage and winds could decrease faster than 
expected. With Yap being right at the trough axis...gentle winds 
should maintain mainly isolated showers there through Friday. 


As the first disturbance and trough shift northward on Friday 
evening...fresh to strong monsoon winds will also spread heavy 
showers and gusty winds into Yap as well. It is still a bit too 
early to determine how much rain all three forecast points will 
receive from this monsoon episode...but 3 to 5 inches sounds 
reasonable for the time being. Starting early next week...the 
monsoon trough should be far enough north of Koror and Yap so that 
surface ridging will begin to take over. For Chuuk...a trade 
disturbance currently approaching the Marshall Islands could 
generate more showers for the first part of next week. Monsoon swell 
is building and will cause seas and surf to reach hazardous levels 
across three locales by late Friday evening. A high surf advisory 
will be needed for the entire region by Friday. 


&& 


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


$$ 


Middlebrooke/chan 



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