As of 02:45 AST

Weather in Rosario, PR

75°Current weather

Rosario, Sunday, 9 August, 02:45

Mostly clear. Feels like 76°. High 87°, low 75°.

Pressure29.97 inHg
Wind3 mph E
Humidity89%
Visibility6.2 mi
Dew point71°

Monthly outlook for Rosario, PR: average high 86.9°, average low 73.7°. That is 0.9° below the climate normal for August. Precipitation is expected on 7 days (about 1.1 inches), against a normal of 8 days and 1.7 inches. The warmest day looks like 15 August (91.3°), the coolest 19 August (72.5°).

86.9°/73.7°
Average high / low
−0.9°
Below normal
7 / 8
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August87.8°88.7°-0.5°
19 August – 28 August85.3°88.2°-1.6°
29 August – 7 Septemberat normal87.9°

August records over 66 years

94.8°7 August 2009All-time high
68.4°7 August 2025All-time low

Climate normals and records are computed from the nearest reference point — Sabana Grande (9 mi).

Mon, 1090° / 75°0.01Light rain
90 °Light rain

Rosario, Monday, 10 August

Light rain. High 90°, low 75°.

Pressure30.03 inHg
Wind7.5 mph S
Humidity51%
Visibility6.2 mi
Dew point69°
Tue, 1186° / 74°0.5Rain
86 °Rain

Rosario, Tuesday, 11 August

Rain. High 86°, low 74°.

Pressure30.00 inHg
Wind12 mph S
Humidity58%
Visibility6.2 mi
Dew point71°
Wed, 1286° / 75°0.08Light rain
86 °Light rain

Rosario, Wednesday, 12 August

Light rain. High 86°, low 75°.

Pressure30.00 inHg
Wind11.8 mph SE
Humidity57%
Visibility6.2 mi
Dew point71°
Thu, 1389° / 75°0Mostly clear
89 °Mostly clear

Rosario, Thursday, 13 August

Mostly clear. High 89°, low 75°.

Pressure30.03 inHg
Wind16.2 mph SE
Humidity56%
Visibility
Dew point67°
Fri, 1490° / 73°0Clear
90 °Clear

Rosario, Friday, 14 August

Clear. High 90°, low 73°.

Pressure30.09 inHg
Wind12.6 mph E
Humidity49%
Visibility
Dew point64°
Sat, 1591° / 73°0Clear
91 °Clear

Rosario, Saturday, 15 August

Clear. High 91°, low 73°.

Pressure30.03 inHg
Wind12.8 mph SE
Humidity45%
Visibility
Dew point63°
Sun, 1687° / 73°0.08Light rain
87 °Light rain

Rosario, Sunday, 16 August

Light rain. High 87°, low 73°.

Pressure30.00 inHg
Wind7 mph SW
Humidity50%
Visibility
Dew point64°
Mon, 1786° / 74°0.01Light rain
86 °Light rain

Rosario, Monday, 17 August

Light rain. High 86°, low 74°.

Pressure29.97 inHg
Wind14.1 mph SW
Humidity50%
Visibility
Dew point64°
Tue, 1885° / 73°0.04Light rain
85 °Light rain

Rosario, Tuesday, 18 August

Light rain. High 85°, low 73°.

Pressure30.03 inHg
Wind7.4 mph SW
Humidity55%
Visibility
Dew point65°
Wed, 1985° / 73°0.01Light rain
85 °Light rain

Rosario, Wednesday, 19 August

Light rain. High 85°, low 73°.

Pressure30.03 inHg
Wind8.5 mph SW
Humidity60%
Visibility
Dew point68°
Thu, 2084° / 74°0.01Light rain
84 °Light rain

Rosario, Thursday, 20 August

Light rain. High 84°, low 74°.

Pressure30.00 inHg
Wind8.3 mph W
Humidity63%
Visibility
Dew point68°
Fri, 2184° / 73°0Clear
84 °Clear

Rosario, Friday, 21 August

Clear. High 84°, low 73°.

Pressure29.97 inHg
Wind8.2 mph W
Humidity56%
Visibility
Dew point65°
Sat, 2286° / 74°0.04Light rain
86 °Light rain

Rosario, Saturday, 22 August

Light rain. High 86°, low 74°.

Pressure29.94 inHg
Wind6.9 mph E
Humidity58%
Visibility
Dew point67°
Sun, 2387° / 73°0.09Light rain
87 °Light rain

Rosario, Sunday, 23 August

Light rain. High 87°, low 73°.

Pressure29.97 inHg
Wind9.3 mph SE
Humidity55%
Visibility
Dew point67°
Mon, 2486° / 74°0.13Rain
86 °Rain

Rosario, Monday, 24 August

Rain. High 86°, low 74°.

Pressure30.00 inHg
Wind11.5 mph SE
Humidity56%
Visibility
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2588° / 76°0.12Climate normal
88 °Climate normal

Rosario, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.12 in
Chance of precipitation50%
Record high92° (1960)
Record low69° (2024)
Wed, 2688° / 76°0.11Climate normal
88 °Climate normal

Rosario, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.11 in
Chance of precipitation52%
Record high94° (1990)
Record low71° (2023)
Thu, 2788° / 76°0.09Climate normal
88 °Climate normal

Rosario, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.09 in
Chance of precipitation55%
Record high94° (1990)
Record low71° (2020)
Fri, 2888° / 76°0.11Climate normal
88 °Climate normal

Rosario, Friday, 28 August

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.11 in
Chance of precipitation52%
Record high92° (1992)
Record low72° (2024)
Sat, 2988° / 76°0.06Climate normal
88 °Climate normal

Rosario, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.06 in
Chance of precipitation47%
Record high92° (1985)
Record low72° (2020)
Sun, 3088° / 76°0.16Climate normal
88 °Climate normal

Rosario, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.16 in
Chance of precipitation52%
Record high94° (1994)
Record low70° (2025)
Mon, 3188° / 76°0.12Climate normal
88 °Climate normal

Rosario, Monday, 31 August

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.12 in
Chance of precipitation38%
Record high93° (1960)
Record low73° (2021)
Tue, 0188° / 76°0.11Climate normal
88 °Climate normal

Rosario, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.11 in
Chance of precipitation55%
Record high93° (2009)
Record low71° (2022)
Wed, 0288° / 76°0.11Climate normal
88 °Climate normal

Rosario, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.11 in
Chance of precipitation57%
Record high94° (2009)
Record low71° (2022)
Thu, 0388° / 76°0.11Climate normal
88 °Climate normal

Rosario, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.11 in
Chance of precipitation55%
Record high93° (2009)
Record low72° (2022)
Fri, 0488° / 76°0.1Climate normal
88 °Climate normal

Rosario, Friday, 4 September

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.1 in
Chance of precipitation52%
Record high92° (1989)
Record low73° (2022)
Sat, 0588° / 76°0.21Climate normal
88 °Climate normal

Rosario, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.21 in
Chance of precipitation45%
Record high92° (2021)
Record low70° (2024)
Sun, 0688° / 76°0.12Climate normal
88 °Climate normal

Rosario, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.12 in
Chance of precipitation53%
Record high92° (1997)
Record low72° (2024)
Mon, 0788° / 76°0.13Climate normal
88 °Climate normal

Rosario, Monday, 7 September

Climate normal for this date — 60-year average.

Average high88°
Average low76°
Average precipitation0.13 in
Chance of precipitation57%
Record high93° (1986)
Record low71° (2025)

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 Rosario, 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 Rosario, 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.