Weather in Guaynabo, United States
Weather Advisories
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Tomorrow's weather summary
The weather in Guaynabo on Saturday, September 12th, will vary throughout the day from foggy condition to clear.
According to our models fog will appear before dawn and a high probability for clear skies during the morning.
Weather details for Guaynabo, on Saturday, September 12th:
The highest temperature of the day will be 93°F around 3 pm. The day will be extremely humid, with average humidity of 71%, ranging from 49% to a maximum value of 90% at about 1 am. The wind will be light, and will get up to 7 mph at noon, blowing from the north. The cloud coverage will range from 3% around 11 pm to as high as 98% around 1 am with an average of 50%.
The precipitation probability will change throughout the day between 0% and 5%. The highest chance for precipitation will be around 4 pm and the lowest probability around midnight. The dew point will range from 70°F up to a maximum value of 76°F around 9 pm.
The visibility is expected to be good with average visibility of 7 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1014 hPa. Sunrise will be at 6:37 am, and sunset at 6:56 pm. The day will have 12 hours and 19 minutes of daylight.
Air quality forecast for Guaynabo, on Saturday, September 12th:
On average, the air quality on this day will be unhealthy for sensitive groups, meaning that members of sensitive groups may experience health effects. The general public is less likely to be affected. According to our index, ranging from 0 to 500, the air quality is going to be between values of 83 and 128.
Pollen forecast for Guaynabo, on Saturday, September 12th:
The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.
The weather in Guaynabo on Sunday, September 13th, is going to be clear for most of the day, together with fog before dawn.
There is also a chance for light fog before dawn at about 1 am.
Weather details for Guaynabo, on Sunday, September 13th:
The maximum temperature of the day is going to be 94°F at about 2 pm. The day will be humid, with average humidity of 64%, ranging from 41% to a maximum value of 87% at about 4 am. The wind will be light, and will get up to 9 mph at 4 pm, blowing from the south. The cloud coverage will range from 1% around 10 am to as high as 56% around 3 am with an average of 18%.
The chances of precipitation throughout the day will change between 0% and 5%. The highest chance for precipitation will be around 3 pm and the lowest probability around midnight. The dew point will range from 64°F up to a maximum value of 74°F around midnight.
The visibility is expected to be fair with average visibility of 6 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1014 hPa. Sunrise will be at 6:38 am, and sunset at 6:55 pm, making it a total of 12 hours and 17 minutes of daylight.
Air quality forecast for Guaynabo, on Sunday, September 13th:
On average, the air quality on this day will be unhealthy for sensitive groups, meaning that members of sensitive groups may experience health effects. The general public is less likely to be affected. According to our index, ranging from 0 to 500, the air quality is going to be between values of 97 and 143.
Pollen forecast for Guaynabo, on Sunday, September 13th:
The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.
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