Weather Guam long-term weather forecast
Long-term weather forecast for Guam for ten days.
Sunday, Jun 21
90 / 79°F
| 0.01 in | 6 mph |
| 81 °F | 90 °F | 4 am | |
| 88 °F | 97 °F | 10 am | |
| 86 °F | 95 °F | 4 pm | |
| 79 °F | 88 °F | 10 pm |
sunrise 5:54 am
sunset 6:50 pm
HOURLY
sunset 6:50 pm
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Weather forecast Guam, Guam extended forecast
| Time | State Temp. Feels like | Precip. | Wind | Pressure | Humidity | Dew | total |
Fog | Low |
Middle |
High |
||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sunday 06/21/2026 |
|||||||||||||
| 4 AM
7 PM
| partly cloudy | 81 °F 90 °F |
0.00 in | 10 fps 7 mph south-southeast |
29.8 in | 83 % | 73 °F | 18 % | 0% | 3% | 3% | 14% | |
| 10 AM
1 AM
| rain | 88 °F 97 °F |
0.09 in | 13 fps 9 mph south-southeast |
29.9 in | 63 % | 73 °F | 100 % | 0% | 25% | 5% | 100% | |
| 4 PM
7 AM
| rain | 86 °F 95 °F |
0.11 in | 9 fps 6 mph south-southwest |
29.8 in | 70 % | 73 °F | 100 % | 0% | 88% | 27% | 96% | |
| 10 PM
1 PM
| light rain | 79 °F 88 °F |
0.04 in | 12 fps 8 mph south |
29.9 in | 90 % | 75 °F | 94 % | 0% | 2% | 11% | 93% | |
Monday 06/22/2026 |
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| 4 AM
7 PM
| overcast | 79 °F 90 °F |
0.02 in | 6 fps 4 mph south-southwest |
29.8 in | 91 % | 75 °F | 90 % | 0% | 0% | 4% | 90% | |
| 10 AM
1 AM
| rain showers | 88 °F 97 °F |
0.15 in | 8 fps 6 mph south-southeast |
29.8 in | 62 % | 72 °F | 68 % | 0% | 31% | 7% | 53% | |
| 4 PM
7 AM
| rain showers | 82 °F 91 °F |
0.11 in | 9 fps 6 mph south-southwest |
29.8 in | 75 % | 73 °F | 75 % | 0% | 10% | 14% | 68% | |
| 10 PM
1 PM
| heavy rain showers | 79 °F 88 °F |
0.22 in | 2 fps 1 mph south-southeast |
29.9 in | 86 % | 73 °F | 53 % | 0% | 26% | 11% | 29% | |
Guam, Guam - information
State: GuamGPS coordinates: 13.4310; 144.7531
Time zone: Pacific / Guam
time difference in hours with time in US is +8 hours
Population: 159 358
Altitude: 298 ft
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Data source
Weather forecast for Guam is supplied by MET Norway Norwegian Meteorological Institute and the NRK.Feels like
To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.Weather with Meteobox for your website
Astronomical information Guam
data are always in the local timeSun and light
June 21, 2026
| Sunrise: | Sunset: |
| 5:54 am | 6:50 pm |
| Noon: | Length of day: |
| 12:22 pm | 12:55 |
| Start of civil twilight*: | End of civil twilight*: |
| 5:31 am | 7:14 pm |
| Start of nautical twilight*: | End of nautical twilight*: |
| 5:04 am | 7:41 pm |
| Start of astronomical twilight*: | End of astronomical twilight*: |
| 4:35 am | 8:09 pm |
| * What is Twilight? | |
Moon and moon phases
| Moonrise: | Moonset: |
| 06/21/2026 11:41 am | 06/22/2026 12:04 am |
| Next new moon: | Next full moon: |
| 07/14/2026 | 06/30/2026 |