Weather forecast for 10 daysGuam, USA
Guam, USA - most visited locations
Weather forecast for the weekend
Sunday Oct 18, 2026
- 82°F
- 79°F
Heavy Rain / Wind
- Precip. probability: 99%
- Precipitation: 4.69"
- Wind: 65mphSE 137°
- Humidity: 94%
- UV index: 6
- Sunrise: 6:11 am ChST
- Sunset: 6:00 pm ChST
- details ▼
Tomorrow, on Sunday, October 18, downpours mixed with gusty winds are also anticipated, increasing the chance of fallen tree limbs.
Extreme precipitation of 4.69" is expected. Temperature readings will slightly shift from a daytime peak of a temperate 82.4°F to a nighttime low of a moderately hot 78.8°F.
The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is evaluated at a blazing 93.2°F. Note that heat index values are valued for light wind and location in the shade.
Tomorrow, expect the temperature to remain near October's average maximum of 84.4°F.
Sunrise will be at 6:11 am and sunset at 6:00 pm; tomorrow's daylight will last for 11h and 49min.
Extreme precipitation of 4.69" is expected. Temperature readings will slightly shift from a daytime peak of a temperate 82.4°F to a nighttime low of a moderately hot 78.8°F.
The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is evaluated at a blazing 93.2°F. Note that heat index values are valued for light wind and location in the shade.
Tomorrow, expect the temperature to remain near October's average maximum of 84.4°F.
Sunrise will be at 6:11 am and sunset at 6:00 pm; tomorrow's daylight will last for 11h and 49min.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 79°F
Heavy Rain / Wind
- Precip. probability: 100%
- Precipitation: 1.65"
- Wind: 76mphNE 35°
- Humidity: 92%
- UV index: 0
- Sunrise: 6:11 am ChST
- Sunset: 6:01 pm ChST
- details ▼
- Sunday
- Oct 18, 2026
- 82°F
- 79°F
Heavy Rain / Wind
- Precip. probability: 99%
- Precipitation: 4.69"
- Wind: 65mphSE 137°
- Humidity: 94%
- UV index: 6
- Sunrise: 6:11 am ChST
- Sunset: 6:00 pm ChST
- details ▼
- Monday
- Oct 19, 2026
- 82°F
- 81°F
Showers / Wind
- Precip. probability: 73%
- Precipitation: 0.59"
- Wind: 21mphSSE 149°
- Humidity: 89%
- UV index: 6
- Sunrise: 6:12 am ChST
- Sunset: 5:59 pm ChST
- details ▼
- Tuesday
- Oct 20, 2026
- 86°F
- 79°F
PM Showers
- Precip. probability: 36%
- Precipitation: 0.08"
- Wind: 12mphESE 109°
- Humidity: 81%
- UV index: 11
- Sunrise: 6:12 am ChST
- Sunset: 5:59 pm ChST
- details ▼
- Wednesday
- Oct 21, 2026
- 86°F
- 79°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0.08"
- Wind: 11mphNE 56°
- Humidity: 81%
- UV index: 10
- Sunrise: 6:12 am ChST
- Sunset: 5:58 pm ChST
- details ▼
- Thursday
- Oct 22, 2026
- 86°F
- 79°F
Mostly Sunny
- Precip. probability: 24%
- Precipitation: 0.04"
- Wind: 12mphNE 55°
- Humidity: 81%
- UV index: 11
- Sunrise: 6:12 am ChST
- Sunset: 5:58 pm ChST
- details ▼
- Friday
- Oct 23, 2026
- 84°F
- 79°F
Isolated Thunderstorms
- Precip. probability: 36%
- Precipitation: 0.2"
- Wind: 12mphENE 64°
- Humidity: 83%
- UV index: 11
- Sunrise: 6:12 am ChST
- Sunset: 5:57 pm ChST
- details ▼
- Saturday
- Oct 24, 2026
- 84°F
- 79°F
Scattered Thunderstorms
- Precip. probability: 55%
- Precipitation: 0.35"
- Wind: 10mphENE 74°
- Humidity: 84%
- UV index: 11
- Sunrise: 6:13 am ChST
- Sunset: 5:57 pm ChST
- details ▼
- Sunday
- Oct 25, 2026
- 84°F
- 79°F
Scattered Thunderstorms
- Precip. probability: 38%
- Precipitation: 0.28"
- Wind: 8mphE 80°
- Humidity: 82%
- UV index: 9
- Sunrise: 6:13 am ChST
- Sunset: 5:56 pm ChST
- details ▼
- Monday
- Oct 26, 2026
- 86°F
- 79°F
Showers
- Precip. probability: 41%
- Precipitation: 0.12"
- Wind: 6mphENE 72°
- Humidity: 81%
- UV index: 11
- Sunrise: 6:13 am ChST
- Sunset: 5:56 pm ChST
- details ▼
Mixed conditions are forecasted for the coming ten days, and a mix of rainy, unstable, dull and sun-filled weather is expected.
Rainfall is predicted day-to-day, with daily precipitation varying from a minimal 0.04" to a maximum of 4.69".
The maximum temperature will be very similar in the upcoming days. Expected highs will hover between 82.4°F and 86°F, while the nighttime low will be also mostly stable, as night temperatures will lie between 78.8°F and 80.6°F.
With a maximum temperature of 86°F, Tuesday through Thursday and next Monday will be the hottest days in Hagåtña; Sunday and Monday, with the highest temperature of 82.4°F, will be the coldest days in Hagåtña.
Combining with the humidity, the maximum feel-like temperature may increase greatly and range between a hot 93.2°F and a sizzling 100.4°F.
Rainfall is predicted day-to-day, with daily precipitation varying from a minimal 0.04" to a maximum of 4.69".
The maximum temperature will be very similar in the upcoming days. Expected highs will hover between 82.4°F and 86°F, while the nighttime low will be also mostly stable, as night temperatures will lie between 78.8°F and 80.6°F.
With a maximum temperature of 86°F, Tuesday through Thursday and next Monday will be the hottest days in Hagåtña; Sunday and Monday, with the highest temperature of 82.4°F, will be the coldest days in Hagåtña.
Combining with the humidity, the maximum feel-like temperature may increase greatly and range between a hot 93.2°F and a sizzling 100.4°F.
Updated: Oct 17, 2026 @ 12:08:29 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, strong wind gusts with steady downpours are anticipated, requiring caution while commuting.
Yes, it will rain tomorrow. Weather alert - extreme precipitation of 4.69" is forecasted.
Tomorrow, the maximum temperature will be 82.4°F, while the minimum temperature will be 78.8°F. The maximum heat index, which combines air temperature and relative humidity, is estimated at 93.2°F.
Tomorrow, the maximum temperature will be in line with the average highest temperature in October. Tomorrow, the lowest temperature will be a couple of degrees lower than the average low temperature.
Tomorrow, the maximum temperature will be in line with the average highest temperature in October. Tomorrow, the lowest temperature will be a couple of degrees lower than the average low temperature.
On Sunday, in Hagåtña, sunrise will be at 6:11 am and sunset at 6:00 pm (ChST).
In Hagåtña, tomorrow, there will be 11h and 49min of daylight.





