As of 17:34 AST

Weather in Isabela, PR

84°Current weather

Isabela, Saturday, 8 August, 17:34

Rain. Feels like 95°. High 89°, low 77°.

Pressure29.97 inHg
Wind20.7 mph E
Humidity81%
Visibility6.2 mi
Dew point78°

Monthly outlook for Isabela, PR: average high 87.8°, average low 77.6°. That is 1.3° above the climate normal for August. Precipitation is expected on 8 days (about 1.2 inches), against a normal of 11 days and 2.2 inches. The warmest day looks like 19 August (90.6°), the coolest 23 August (74.9°).

87.8°/77.6°
Average high / low
+1.3°
Above normal
8 / 11
Wet days / normal
1.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August87.7°85.4°+1.2°
18 August – 27 August87.9°85.2°+1.5°
28 August – 6 Septemberat normal84.9°

August records over 66 years

92.1°28 August 2023All-time high
70.9°31 August 2021All-time low

Climate normals and records are computed from the nearest reference point — Aceitunas (5 mi).

Sun, 0987° / 77°0Overcast
87 °Overcast

Isabela, Sunday, 9 August

Overcast. High 87°, low 77°.

Pressure30.03 inHg
Wind22.2 mph NE
Humidity70%
Visibility6.2 mi
Dew point74°
Mon, 1088° / 77°0Clear
88 °Clear

Isabela, Monday, 10 August

Clear. High 88°, low 77°.

Pressure30.06 inHg
Wind23.7 mph NE
Humidity62%
Visibility6.2 mi
Dew point73°
Tue, 1187° / 78°0.34Rain
87 °Rain

Isabela, Tuesday, 11 August

Rain. High 87°, low 78°.

Pressure30.03 inHg
Wind20.9 mph NE
Humidity67%
Visibility6.2 mi
Dew point73°
Wed, 1288° / 77°0.33Rain
88 °Rain

Isabela, Wednesday, 12 August

Rain. High 88°, low 77°.

Pressure30.00 inHg
Wind14.5 mph NE
Humidity63%
Visibility6.2 mi
Dew point73°
Thu, 1390° / 78°0Overcast
90 °Overcast

Isabela, Thursday, 13 August

Overcast. High 90°, low 78°.

Pressure30.03 inHg
Wind21.3 mph E
Humidity60%
Visibility
Dew point71°
Fri, 1487° / 78°0Overcast
87 °Overcast

Isabela, Friday, 14 August

Overcast. High 87°, low 78°.

Pressure30.09 inHg
Wind29.6 mph NE
Humidity59%
Visibility
Dew point70°
Sat, 1587° / 80°0Light rain
87 °Light rain

Isabela, Saturday, 15 August

Light rain. High 87°, low 80°.

Pressure30.09 inHg
Wind27.7 mph E
Humidity60%
Visibility
Dew point71°
Sun, 1687° / 80°0.02Light rain
87 °Light rain

Isabela, Sunday, 16 August

Light rain. High 87°, low 80°.

Pressure30.06 inHg
Wind29.7 mph NE
Humidity61%
Visibility
Dew point71°
Mon, 1787° / 79°0.04Light rain
87 °Light rain

Isabela, Monday, 17 August

Light rain. High 87°, low 79°.

Pressure30.03 inHg
Wind23.5 mph NE
Humidity64%
Visibility
Dew point72°
Tue, 1887° / 79°0.1Light rain
87 °Light rain

Isabela, Tuesday, 18 August

Light rain. High 87°, low 79°.

Pressure29.97 inHg
Wind18 mph NE
Humidity69%
Visibility
Dew point74°
Wed, 1991° / 78°0.11Light rain
91 °Light rain

Isabela, Wednesday, 19 August

Light rain. High 91°, low 78°.

Pressure29.97 inHg
Wind14.9 mph NE
Humidity50%
Visibility
Dew point68°
Thu, 2088° / 78°0.09Light rain
88 °Light rain

Isabela, Thursday, 20 August

Light rain. High 88°, low 78°.

Pressure30.03 inHg
Wind9.2 mph NE
Humidity62%
Visibility
Dew point72°
Fri, 2189° / 77°0.02Light rain
89 °Light rain

Isabela, Friday, 21 August

Light rain. High 89°, low 77°.

Pressure30.03 inHg
Wind11.5 mph E
Humidity54%
Visibility
Dew point68°
Sat, 2288° / 77°0.04Light rain
88 °Light rain

Isabela, Saturday, 22 August

Light rain. High 88°, low 77°.

Pressure30.00 inHg
Wind15.1 mph NE
Humidity59%
Visibility
Dew point70°
Sun, 2386° / 75°0.03Light rain
86 °Light rain

Isabela, Sunday, 23 August

Light rain. High 86°, low 75°.

Pressure30.00 inHg
Wind14.2 mph E
Humidity67%
Visibility
Dew point72°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2485° / 76°0.19Climate normal
85 °Climate normal

Isabela, Monday, 24 August

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.19 in
Chance of precipitation80%
Record high91° (2023)
Record low73° (1976)
Tue, 2585° / 76°0.12Climate normal
85 °Climate normal

Isabela, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.12 in
Chance of precipitation65%
Record high89° (1971)
Record low73° (2018)
Wed, 2685° / 76°0.16Climate normal
85 °Climate normal

Isabela, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.16 in
Chance of precipitation67%
Record high89° (2021)
Record low73° (1972)
Thu, 2785° / 76°0.12Climate normal
85 °Climate normal

Isabela, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.12 in
Chance of precipitation78%
Record high89° (2023)
Record low74° (1967)
Fri, 2885° / 76°0.15Climate normal
85 °Climate normal

Isabela, Friday, 28 August

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.15 in
Chance of precipitation80%
Record high92° (2023)
Record low74° (2015)
Sat, 2985° / 76°0.12Climate normal
85 °Climate normal

Isabela, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.12 in
Chance of precipitation68%
Record high89° (2023)
Record low74° (1990)
Sun, 3085° / 76°0.2Climate normal
85 °Climate normal

Isabela, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.2 in
Chance of precipitation75%
Record high89° (2023)
Record low74° (1979)
Mon, 3185° / 76°0.15Climate normal
85 °Climate normal

Isabela, Monday, 31 August

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.15 in
Chance of precipitation77%
Record high89° (2023)
Record low71° (2021)
Tue, 0185° / 76°0.15Climate normal
85 °Climate normal

Isabela, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.15 in
Chance of precipitation70%
Record high89° (2025)
Record low73° (1976)
Wed, 0285° / 76°0.14Climate normal
85 °Climate normal

Isabela, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.14 in
Chance of precipitation80%
Record high88° (2021)
Record low72° (2021)
Thu, 0385° / 76°0.12Climate normal
85 °Climate normal

Isabela, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.12 in
Chance of precipitation73%
Record high92° (2021)
Record low73° (1965)
Fri, 0485° / 76°0.13Climate normal
85 °Climate normal

Isabela, Friday, 4 September

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.13 in
Chance of precipitation72%
Record high92° (2021)
Record low72° (2018)
Sat, 0585° / 76°0.23Climate normal
85 °Climate normal

Isabela, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.23 in
Chance of precipitation68%
Record high89° (2021)
Record low73° (1961)
Sun, 0685° / 76°0.17Climate normal
85 °Climate normal

Isabela, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high85°
Average low76°
Average precipitation0.17 in
Chance of precipitation67%
Record high88° (1994)
Record low71° (2023)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Isabela, PR are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Isabela, PR since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.