Monthly outlook for Las Llanadas, PR: average high 90.1°, average low 74.6°. That is 1.3° above the climate normal for August. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 10 days and 1.8 inches. The warmest day looks like 21 August (93.1°), the coolest 23 August (71.6°).
90.1°/74.6°
Average high / low
+1.3°
Above normal
4 / 10
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
90.4°
87.8°
+1.4°
18 August – 27 August
89.5°
87.7°
+1°
28 August – 6 September
at normal
87.4°
—
August records over 66 years
95°28 August 2023All-time high
70.9°20 August 1969All-time low
Climate normals and records are computed from the nearest reference point — Tiburones (8 mi).
Sun, 0990° / 74°0
90 °
Las Llanadas, Sunday, 9 August
Overcast. High 90°, low 74°.
Pressure30.03 inHg
Wind19.6 mph NE
Humidity58%
Visibility6.2 mi
Dew point70°
Mon, 1092° / 75°0
92 °
Las Llanadas, Monday, 10 August
Clear. High 92°, low 75°.
Pressure30.06 inHg
Wind17.8 mph NE
Humidity51%
Visibility6.2 mi
Dew point68°
Tue, 1190° / 74°0.03
90 °
Las Llanadas, Tuesday, 11 August
Light rain. High 90°, low 74°.
Pressure30.03 inHg
Wind16.2 mph NE
Humidity54%
Visibility6.2 mi
Dew point69°
Wed, 1290° / 74°0.1
90 °
Las Llanadas, Wednesday, 12 August
Light rain. High 90°, low 74°.
Pressure30.00 inHg
Wind11.9 mph NE
Humidity56%
Visibility6.2 mi
Dew point70°
Thu, 1393° / 75°0
93 °
Las Llanadas, Thursday, 13 August
Overcast. High 93°, low 75°.
Pressure30.06 inHg
Wind15 mph E
Humidity53%
Visibility—
Dew point68°
Fri, 1491° / 74°0
91 °
Las Llanadas, Friday, 14 August
Overcast. High 91°, low 74°.
Pressure30.12 inHg
Wind20.8 mph E
Humidity52%
Visibility—
Dew point67°
Sat, 1590° / 76°0
90 °
Las Llanadas, Saturday, 15 August
Light rain. High 90°, low 76°.
Pressure30.09 inHg
Wind21.5 mph NE
Humidity49%
Visibility—
Dew point66°
Sun, 1690° / 75°0.02
90 °
Las Llanadas, Sunday, 16 August
Light rain. High 90°, low 75°.
Pressure30.06 inHg
Wind21.7 mph NE
Humidity53%
Visibility—
Dew point67°
Mon, 1789° / 75°0.03
89 °
Las Llanadas, Monday, 17 August
Light rain. High 89°, low 75°.
Pressure30.03 inHg
Wind18.2 mph NE
Humidity54%
Visibility—
Dew point68°
Tue, 1886° / 76°0.2
86 °
Las Llanadas, Tuesday, 18 August
Light rain. High 86°, low 76°.
Pressure30.00 inHg
Wind12.9 mph NE
Humidity69%
Visibility—
Dew point72°
Wed, 1991° / 75°0.03
91 °
Las Llanadas, Wednesday, 19 August
Light rain. High 91°, low 75°.
Pressure30.00 inHg
Wind6.6 mph S
Humidity50%
Visibility—
Dew point66°
Thu, 2089° / 75°0.05
89 °
Las Llanadas, Thursday, 20 August
Light rain. High 89°, low 75°.
Pressure30.03 inHg
Wind7.8 mph NE
Humidity60%
Visibility—
Dew point71°
Fri, 2193° / 74°0.01
93 °
Las Llanadas, Friday, 21 August
Light rain. High 93°, low 74°.
Pressure30.03 inHg
Wind8.9 mph NE
Humidity47%
Visibility—
Dew point66°
Sat, 2292° / 73°0
92 °
Las Llanadas, Saturday, 22 August
Mostly clear. High 92°, low 73°.
Pressure30.00 inHg
Wind13.7 mph NE
Humidity55%
Visibility—
Dew point69°
Sun, 2386° / 72°0.06
86 °
Las Llanadas, Sunday, 23 August
Light rain. High 86°, low 72°.
Pressure30.00 inHg
Wind11.5 mph NE
Humidity61%
Visibility—
Dew point69°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2487° / 75°0.16
87 °
Las Llanadas, Monday, 24 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.16 in
Chance of precipitation67%
Record high92° (2023)
Record low72° (1963)
Tue, 2588° / 75°0.1
88 °
Las Llanadas, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high88°
Average low75°
Average precipitation0.1 in
Chance of precipitation63%
Record high93° (2019)
Record low71° (1969)
Wed, 2688° / 75°0.12
88 °
Las Llanadas, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high88°
Average low75°
Average precipitation0.12 in
Chance of precipitation60%
Record high94° (2019)
Record low73° (1972)
Thu, 2788° / 75°0.11
88 °
Las Llanadas, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high88°
Average low75°
Average precipitation0.11 in
Chance of precipitation67%
Record high93° (2023)
Record low73° (2012)
Fri, 2887° / 75°0.16
87 °
Las Llanadas, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.16 in
Chance of precipitation73%
Record high95° (2023)
Record low72° (1966)
Sat, 2988° / 75°0.11
88 °
Las Llanadas, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low75°
Average precipitation0.11 in
Chance of precipitation65%
Record high93° (1994)
Record low72° (1990)
Sun, 3087° / 75°0.2
87 °
Las Llanadas, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.2 in
Chance of precipitation67%
Record high94° (2023)
Record low73° (1971)
Mon, 3187° / 75°0.14
87 °
Las Llanadas, Monday, 31 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.14 in
Chance of precipitation65%
Record high93° (2023)
Record low72° (2021)
Tue, 0187° / 75°0.15
87 °
Las Llanadas, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.15 in
Chance of precipitation73%
Record high91° (1995)
Record low72° (1976)
Wed, 0287° / 75°0.15
87 °
Las Llanadas, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.15 in
Chance of precipitation83%
Record high92° (1965)
Record low71° (1986)
Thu, 0388° / 75°0.11
88 °
Las Llanadas, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high88°
Average low75°
Average precipitation0.11 in
Chance of precipitation63%
Record high92° (1967)
Record low72° (1976)
Fri, 0488° / 75°0.13
88 °
Las Llanadas, Friday, 4 September
Climate normal for this date — 60-year average.
Average high88°
Average low75°
Average precipitation0.13 in
Chance of precipitation55%
Record high92° (2021)
Record low73° (1981)
Sat, 0587° / 75°0.22
87 °
Las Llanadas, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.22 in
Chance of precipitation75%
Record high93° (2023)
Record low70° (1961)
Sun, 0687° / 75°0.2
87 °
Las Llanadas, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.2 in
Chance of precipitation75%
Record high92° (2012)
Record low70° (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 Las Llanadas, 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 Las Llanadas, 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.