Weather forecast for todayGuam, USA

Weather forecast for today

Current condition 3:49 am ChST

  • 81°F
  • Feels like:
    90°F
Rain / Wind
Rain / Wind
  • Precipitation: 0.08"
  • Wind: 51mphNE 50°
  • Humidity: 95%
  • Dewpoint: 79°F
  • Pressure: 29.21"Hg
  • Visibility: 3mi
  • UV index: 0
  • ▼
At the moment, in Hagåtña, steady rain is falling, accompanied by blustery winds.
Current rainfall is 0.08".
The temperature is a warm 80.6°F, while the felt air temperature, which combines relative humidity and air temperature, is appraised at a tropical 89.6°F. The current temperature is nearly at the maximum of today's 82.4°F.

Sunday Oct 18, 2026

  • 82°F
  • 79°F
Rain / Wind
Rain / Wind
  • Precip. probability: 100%
  • Precipitation: 4.13"
  • Wind: 75mphSE 124°
  • Humidity: 94%
  • UV index: 6
  • Sunrise: 6:11 am ChST
  • Sunset: 6:00 pm ChST
  • ▼
On Sunday, October 18, rain will combine with persistent winds.
Extreme precipitation of 4.13" is forecasted for today. Slight temperature shifts from a high of a moderately hot 82.4°F to a low of a temperate 78.8°F are anticipated.
The maximum heat index, which adjusts the air temperature based on humidity, is computed to be a hot 93.2°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Forecasts show the temperature anticipated to reach the usual October high of 84.4°F.
Sunrise will be at 6:11 am and sunset at 6:00 pm; the daylight will last for 11h and 49min.

Hourly overview

Hourly temperatures

Warmest period: 8 am - 10 am 91°C.
Coldest hour: 10 pm 88°C.

Chance of precipitation

Highest chance: 100%.

Hourly weather forecast

  • 4 am
  • 81°F
  • Feels like:
    90°F
Rain / Wind
Rain / Wind
  • Precip. probability: 82%
  • Precipitation: 0.08"
  • Wind: 62mphNE 48°
  • Humidity: 95%
  • Pressure: 29.12"Hg
  • Visibility: 2mi
  • UV index: 0
  • ▼
  • 6 am
  • 81°F
  • Feels like:
    90°F
Rain / Wind
Rain / Wind
  • Precip. probability: 100%
  • Precipitation: 0.31"
  • Wind: 75mphE 86°
  • Humidity: 95%
  • Pressure: 28.97"Hg
  • Visibility: 1mi
  • UV index: 0
  • ▼
Sunrise: 6:11 am
  • 8 am
  • 81°F
  • Feels like:
    91°F
Showers / Wind
Showers / Wind
  • Precip. probability: 100%
  • Precipitation: 0.16"
  • Wind: 62mphESE 119°
  • Humidity: 91%
  • Pressure: 29.12"Hg
  • Visibility: 1mi
  • UV index: 1
  • ▼
  • 10 am
  • 81°F
  • Feels like:
    91°F
Rain / Wind
Rain / Wind
  • Precip. probability: 99%
  • Precipitation: 0.16"
  • Wind: 50mphSE 130°
  • Humidity: 93%
  • Pressure: 29.29"Hg
  • Visibility: 1mi
  • UV index: 2
  • ▼
  • 12 pm
  • 81°F
  • Feels like:
    90°F
Rain / Wind
Rain / Wind
  • Precip. probability: 100%
  • Precipitation: 0.31"
  • Wind: 42mphSE 139°
  • Humidity: 94%
  • Pressure: 29.35"Hg
  • Visibility: 1mi
  • UV index: 6
  • ▼
  • 2 pm
  • 81°F
  • Feels like:
    90°F
Rain / Wind
Rain / Wind
  • Precip. probability: 95%
  • Precipitation: 0.28"
  • Wind: 38mphSE 144°
  • Humidity: 94%
  • Pressure: 29.41"Hg
  • Visibility: 2mi
  • UV index: 4
  • ▼
  • 4 pm
  • 81°F
  • Feels like:
    90°F
Rain / Wind
Rain / Wind
  • Precip. probability: 100%
  • Precipitation: 0.2"
  • Wind: 34mphSE 146°
  • Humidity: 92%
  • Pressure: 29.47"Hg
  • Visibility: 2mi
  • UV index: 1
  • ▼
  • 6 pm
  • 81°F
  • Feels like:
    90°F
Rain / Wind
Rain / Wind
  • Precip. probability: 84%
  • Precipitation: 0.16"
  • Wind: 31mphSSE 147°
  • Humidity: 91%
  • Pressure: 29.56"Hg
  • Visibility: 2mi
  • UV index: 0
  • ▼
Sunset: 6:00 pm
  • 8 pm
  • 81°F
  • Feels like:
    90°F
Showers / Wind
Showers / Wind
  • Precip. probability: 80%
  • Precipitation: 0.16"
  • Wind: 29mphSE 144°
  • Humidity: 91%
  • Pressure: 29.62"Hg
  • Visibility: 2mi
  • UV index: 0
  • ▼
  • 10 pm
  • 81°F
  • Feels like:
    88°F
Showers / Wind
Showers / Wind
  • Precip. probability: 66%
  • Precipitation: 0.12"
  • Wind: 25mphSE 143°
  • Humidity: 93%
  • Pressure: 29.68"Hg
  • Visibility: 2mi
  • UV index: 0
  • ▼
Today, rainy conditions are expected.
Rain is forecasted throughout the entire day, with precipitation varying from a minimal 0.08" to a maximum of 0.31". The most intense rain will be falling at 6 am, and from 11 am to 1 pm.
The temperature will vary between the highest temperature of 80.6°F and the lowest temperature of 80.6°F. The feels-like temperature will be between a maximum of 91.4°F and a minimum of 87.8°F.
Today, the maximum will be similar to October's typical high. The minimum temperature will be also slightly cooler than October's average low of 82.6°F.
Updated: Oct 17, 2026 @ 17:49:30 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Yes, it rains now, and precipitation is 0.08".

The temperature at 3:49 am ChST is 80.6°F. Feels-like temperature is 89.6°F.

Today, rain and windy conditions will remain dominant.

Yes, it will rain today. Weather alert - extreme precipitation of 4.13" is predicted.

Today, the maximum temperature will be 82.4°F, while the minimum temperature will be 78.8°F. The maximum heat index, which adjusts the air temperature based on humidity, is estimated at 93.2°F.
Today, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature will be relatively lower than the average low of 82.6°F.

On Sunday, in Hagåtña, sunrise will be at 6:11 am and sunset at 6:00 pm (ChST).

In Hagåtña, today, there will be 11h and 49min of daylight.

Guam, USA