As of 23:19 AST

Guayanilla, PR weather in September

79°

Guayanilla, Saturday, 8 August, 23:19

Mostly clear. Feels like 79°. High 89°, low 76°.

Pressure30.03 inHg

Wind3.9 mph NE

Humidity87%

Visibility6.2 mi

Dew point74°

See detailed hourly forecast

In September, Guayanilla, PR averages a high of 86.2° and a low of 76.3°. About 5.1 inches of precipitation fall over the month (20 wet days). The record high is 93° (2021) and the record low 70.3° (1961). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	87.1°	76.6°	67%	91° (2009)	73.4° (1986)
2	86.5°	76.5°	75%	92.3° (2009)	73.4° (1974)
3	86.9°	76.5°	50%	92.3° (1960)	73.6° (2022)
4	87.1°	76.5°	55%	91.6° (1960)	72.7° (1964)
5	86.9°	76.5°	67%	91.8° (1997)	70.3° (1961)
6	86.9°	76.5°	58%	93° (2021)	72.7° (1961)
7	86.5°	76.5°	62%	91.2° (2021)	73.8° (1964)
8	86.5°	76.5°	57%	91° (1975)	73.6° (2012)
9	86.7°	76.8°	63%	91.4° (1975)	73.9° (1961)
10	86.9°	76.6°	60%	91.4° (1982)	73.8° (1984)
11	86.9°	76.5°	80%	91.8° (1997)	73° (1971)
12	86.7°	76.5°	67%	91.4° (1972)	73.9° (1986)
13	86.7°	76.5°	63%	91° (1983)	73.8° (1975)
14	86.5°	76.6°	65%	91.4° (2019)	74.5° (1989)
15	86.4°	76.6°	63%	91.6° (2019)	74.1° (1975)
16	86.2°	76.5°	68%	90.3° (2012)	73.6° (1961)
17	86.2°	76.3°	63%	90.7° (2022)	71.4° (1961)
18	85.8°	76.3°	77%	90.7° (1983)	72.7° (1974)
19	86°	75.9°	77%	91.2° (1997)	73° (1975)
20	85.6°	76.1°	70%	91.4° (1986)	73.6° (1962)
21	85.8°	76.1°	72%	89.6° (2024)	73.9° (2004)
22	85.3°	76.1°	73%	90° (1973)	74.1° (1977)
23	85.8°	76.1°	62%	90.5° (2002)	72.3° (1984)
24	85.8°	76.3°	68%	91.8° (1971)	73.4° (1961)
25	85.6°	76.3°	73%	91.6° (2024)	73° (1974)
26	85.6°	76.1°	77%	90.5° (2024)	73.6° (1975)
27	85.8°	75.9°	72%	91.2° (1987)	73.8° (1985)
28	85.5°	75.7°	77%	90° (2023)	72.7° (1985)
29	85.5°	75.9°	60%	89.8° (2023)	71.2° (1975)
30	85.3°	75.9°	70%	88.7° (1990)	72.5° (1974)