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Guam, United States Minor Islands Weather Forecast
Guam, Weather Forecast Dated: 100 PM Fri Sep 11 2026
Expect a very warm period with more clouds than sun and frequent chances of rain over the coming period. generally humid conditions and an unsettled pattern will dominate. A few thunderstorms possible.
Friday, September 11, 2026
Mid-Morning
28°C 82°F
Sunny
Mid-Afternoon
29°C 84°F
Sunny
Early-Evening
28°C 81°F
Scattered Showers
Warm and summery around 29°C 84°F (feels like 33°C 92°F), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds turning from the NE to the ENE at 11 km/h 7 mph.
Saturday, September 12, 2026
Mid-Morning
28°C 82°F
Scattered Showers
Mid-Afternoon
29°C 85°F
Scattered Showers
Early-Evening
28°C 82°F
Scattered Showers
Quite warm reaching 29°C 85°F, feeling like 33°C 92°F during peak afternoon, scattered downpours possible, with steady humidity and steady pressure.
Sunday, September 13, 2026
Mid-Morning
28°C 83°F
Overcast
Mid-Afternoon
30°C 86°F
Scattered Showers
Early-Evening
28°C 82°F
Scattered Showers
Very warm near 30°C 86°F, though humidity makes it feel like 34°C 94°F, locally heavy downpours at times, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds blowing from the ESE at 13 km/h 8 mph.
Monday, September 14, 2026
Mid-Morning
28°C 82°F
Overcast
Mid-Afternoon
29°C 84°F
Scattered Showers
Early-Evening
28°C 81°F
Overcast
Warm and summery around 29°C 84°F (feels like 33°C 92°F), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the NE to the ENE at 10 km/h 7 mph.
Tuesday, September 15, 2026
Mid-Morning
29°C 83°F
Light Showers
Mid-Afternoon
28°C 82°F
Scattered Showers
Early-Evening
27°C 81°F
Light Showers
Quite warm reaching 28°C 82°F, feeling like 31°C 88°F during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. A stray shower or storm late in the day.
Wednesday, September 16, 2026
Mid-Morning
28°C 83°F
Cloudy
Mid-Afternoon
29°C 84°F
Scattered Showers
Early-Evening
28°C 83°F
Scattered Showers
Very warm near 29°C 84°F, though humidity makes it feel like 33°C 91°F, locally heavy downpours at times, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds swinging from the NW to the WNW at 15 km/h 9 mph.
Thursday, September 17, 2026
Mid-Morning
28°C 83°F
Nearby Thunderstorms
Mid-Afternoon
28°C 83°F
Light Showers
Early-Evening
28°C 82°F
Nearby Thunderstorms
Warm and summery around 28°C 83°F (feels like 34°C 92°F), periods of heavy thunderstorms, with steady humidity and steady pressure. Thunderstorms possible in the afternoon and evening. Winds blowing from the W at 35 km/h 22 mph. Gusts up to 43 km/h 27 mph.
Friday, September 18, 2026
Mid-Morning
28°C 83°F
Light Showers
Mid-Afternoon
29°C 84°F
Light Showers
Early-Evening
28°C 83°F
Scattered Showers
Quite warm reaching 29°C 84°F, feeling like 34°C 93°F during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds turning from the WSW to the SW at 22 km/h 14 mph. Gusts up to 32 km/h 20 mph.
Saturday, September 19, 2026
Mid-Morning
29°C 84°F
Scattered Showers
Mid-Afternoon
29°C 85°F
Scattered Showers
Early-Evening
28°C 83°F
Light Showers
Very warm near 29°C 85°F, though humidity makes it feel like 35°C 94°F, locally heavy downpours at times, with steady humidity and steady pressure. Thunderstorms possible in the afternoon and evening. Winds switching from the SW to the WSW at 14 km/h 9 mph.
Sunday, September 20, 2026
Mid-Morning
28°C 82°F
Scattered Showers
Mid-Afternoon
26°C 78°F
Light Showers
Early-Evening
26°C 79°F
Light Showers
Mild with a high of 26°C 78°F, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Thunderstorms possible in the afternoon and evening. Winds blowing from the W at 10 km/h 6 mph.
Monday, September 21, 2026
Mid-Morning
27°C 81°F
Scattered Showers
Mid-Afternoon
27°C 81°F
Scattered Showers
Early-Evening
27°C 81°F
Light Showers
Quite warm reaching 27°C 81°F, feeling like 31°C 88°F during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. A stray shower or storm late in the day. Winds swinging from the W to the WNW at 13 km/h 8 mph.
Tuesday, September 22, 2026
Mid-Morning
28°C 82°F
Overcast
Mid-Afternoon
28°C 83°F
Cloudy
Early-Evening
28°C 82°F
Sunny
Very warm near 28°C 83°F, though humidity makes it feel like 32°C 90°F, overcast in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds shifting from the NNW to the SW at 11 km/h 7 mph.
Wednesday, September 23, 2026
Mid-Morning
28°C 82°F
Overcast
Mid-Afternoon
29°C 84°F
Overcast
Early-Evening
28°C 83°F
Scattered Showers
Warm and summery around 29°C 84°F (feels like 33°C 92°F), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds turning from the NNW to the W at 11 km/h 7 mph.
Thursday, September 24, 2026
Mid-Morning
28°C 83°F
Scattered Showers
Mid-Afternoon
29°C 84°F
Scattered Showers
Early-Evening
28°C 83°F
Light Showers
Quite warm reaching 29°C 84°F, feeling like 33°C 92°F during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. Winds WSW at 19 km/h 12 mph.
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