Weather Río Grande long-term weather forecast

Long-term weather forecast for Río Grande for ten days.

Thursday, Sep 11

88 / 77°F

0.00 in

9 mph

79 °F	88 °F	2 am
81 °F	91 °F	8 am
88 °F	97 °F	2 pm
81 °F	91 °F	8 pm

sunrise 6:10 am
sunset 6:29 pm

HOURLY

During the day morning partly cloudy, later morning cloudy, in the afternoon initially cloudy, later overcast. The highest temperature 88 °F. Total rainfall 0.02 in. At night cloudy. The lowest temperature 77 °F. Total rainfall 0.00 in.

Interactive map weather Commonwealth of Puerto Rico

GPS: 18.3802; -65.8313

altitude: 52 ft
local time:

PLACES IN THE AREA

Weather forecast Río Grande, Puerto Rico extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Thursday 09/11/2025
2 AM	partly cloudy	79 °F 90 °F	0.01 in	3 fps 2 mph south-southeast	29.9 in	92 %	75 °F	21 %	0%	5%	16%	0%
8 AM	cloudy	81 °F 91 °F	0.01 in	5 fps 3 mph east-southeast	30.0 in	85 %	75 °F	67 %	0%	44%	8%	35%
2 PM	overcast	88 °F 97 °F	0.0 in	12 fps 9 mph east-southeast	29.9 in	66 %	75 °F	100 %	0%	7%	7%	100%
8 PM	overcast	81 °F 91 °F	0.0 in	7 fps 4 mph southeast	29.9 in	85 %	75 °F	100 %	0%	1%	0%	100%
Friday 09/12/2025
2 AM	cloudy	79 °F 90 °F	0.00 in	7 fps 4 mph southeast	29.9 in	91 %	75 °F	75 %	0%	8%	15%	70%
8 AM	clear	82 °F 93 °F	0.01 in	1 fps 1 mph southeast	30.0 in	85 %	75 °F	10 %	0%	0%	4%	6%
2 PM	partly cloudy	90 °F 99 °F	0.0 in	12 fps 8 mph east-southeast	29.9 in	65 %	75 °F	17 %	0%	7%	10%	0%
8 PM	clear	81 °F 90 °F	0.0 in	8 fps 6 mph east-southeast	29.9 in	85 %	75 °F	8 %	0%	3%	0%	4%

Río Grande, Puerto Rico - information

State: Puerto Rico

GPS coordinates: 18.3802; -65.8313

Time zone: America / Puerto Rico time difference in hours with time in NY is -6 hours

Population: 13 467
Altitude: 52 ft
The administrative part:

Río Grande Municipio, Río Grande
Río Grande Barrio-Pueblo, Río Grande

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Weather Río Grande, Puerto Rico. Weather forecast Río Grande.

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Data source

Weather forecast for Río Grande is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Río Grande

data are always in the local time

Sun and light

Sept. 11, 2025

Sunrise:	Sunset:
6:10 am	6:29 pm
Noon:	Length of day:
12:19 pm	12:18
Start of civil twilight*:	End of civil twilight*:
5:48 am	6:51 pm
Start of nautical twilight*:	End of nautical twilight*:
5:23 am	7:16 pm
Start of astronomical twilight*:	End of astronomical twilight*:
4:57 am	7:41 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/10/2025 8:37 pm	09/11/2025 9:54 am
Next new moon:	Next full moon:
09/21/2025	10/06/2025