Weather forecast for tomorrow
Guam, USA

Weather forecast for tomorrow

Saturday, Jun 21.

PM Thunderstorms
05:53

18:51
ChST
PM Thunderstorms
90°F / 81°F
  • Wind: 7mph SE
  • Humidity: 72%
  • Precip. probability: 51%
  • Precipitation: 0"
  • UV index: 11
On Saturday, in, afternoon thunderstorms are expected, possibly with frequent lightning.
Minimal precipitation is forecasted for tomorrow. A slight temperature fluctuation is anticipated, ranging from a high of a hot 89.6°F to a low of a temperate 80.6°F.
The maximum heat index, which measures the combined effect of heat and moisture, is calculated to be a blistering 105.8°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
Predicted temperatures are trending a couple of degrees higher than June's climate norm of 84.6°F.
Sunrise will be at 05:53 and sunset at 18:51; tomorrow's daylight will last for 12h and 58min.

Hourly weather forecast

0h
  • 82°F
  • Feels like:
    91°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 4mph ESE
  • Pressure: 29.85"Hg
  • Humidity: 80%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 10mi
2h
  • 82°F
  • Feels like:
    90°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 4mph ESE
  • Pressure: 29.83"Hg
  • Humidity: 81%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
4h
  • 82°F
  • Feels like:
    90°F
Partly Cloudy
Partly Cloudy
  • Wind: 3mph SE
  • Pressure: 29.83"Hg
  • Humidity: 82%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
6h
  • 81°F
  • Feels like:
    88°F
Partly Cloudy
Partly Cloudy
  • Wind: 3mph SE
  • Pressure: 29.83"Hg
  • Humidity: 84%
  • Precip. probability: 6%
  • Precipitation: 0"
  • Visibility: 10mi
8h
  • 86°F
  • Feels like:
    97°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph SE
  • Pressure: 29.85"Hg
  • Humidity: 74%
  • Precip. probability: 10%
  • Precipitation: 0"
  • Visibility: 10mi
10h
  • 88°F
  • Feels like:
    100°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph ESE
  • Pressure: 29.85"Hg
  • Humidity: 66%
  • Precip. probability: 9%
  • Precipitation: 0"
  • Visibility: 10mi
12h
  • 90°F
  • Feels like:
    102°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 9mph ESE
  • Pressure: 29.83"Hg
  • Humidity: 63%
  • Precip. probability: 15%
  • Precipitation: 0"
  • Visibility: 10mi
14h
  • 90°F
  • Feels like:
    100°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph SE
  • Pressure: 29.83"Hg
  • Humidity: 62%
  • Precip. probability: 24%
  • Precipitation: 0"
  • Visibility: 10mi
16h
  • 90°F
  • Feels like:
    100°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 7mph ESE
  • Pressure: 29.8"Hg
  • Humidity: 65%
  • Precip. probability: 16%
  • Precipitation: 0"
  • Visibility: 10mi
18h
  • 86°F
  • Feels like:
    97°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 6mph ESE
  • Pressure: 29.8"Hg
  • Humidity: 72%
  • Precip. probability: 12%
  • Precipitation: 0"
  • Visibility: 10mi
20h
  • 84°F
  • Feels like:
    95°F
Partly Cloudy
Partly Cloudy
  • Wind: 4mph SE
  • Pressure: 29.83"Hg
  • Humidity: 79%
  • Precip. probability: 5%
  • Precipitation: 0"
  • Visibility: 10mi
22h
  • 82°F
  • Feels like:
    93°F
Partly Cloudy
Partly Cloudy
  • Wind: 4mph ESE
  • Pressure: 29.85"Hg
  • Humidity: 83%
  • Precip. probability: 17%
  • Precipitation: 0"
  • Visibility: 10mi
Tomorrow, on Saturday, cloudy conditions are likely to prevail.
The temperature will vary between a minimum of 80.6°F and a maximum of 89.6°F. The feels-like temperature will vary between a minimum of 87.8°F and a maximum of 102.2°F. The hottest part of the day will be from 11h to 16h.
Tomorrow, the forecasted high will be a few degrees higher than June's typical peak temperature. The lowest temperature tomorrow will be also in line with June's average minimum.
Updated: Jun 20, 2025 @ 06:14:58 UTC
Published by: Weather Atlas | About Us
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Weather Forecasting & Climate
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