Monthly outlook for Quebrada Grande, PR: average high 86°, average low 68.4°. That is 0.5° below the climate normal for August. Precipitation is expected on 1 day (about 0.6 inches), against a normal of 11 days and 2.0 inches. The warmest day looks like 17 August (88.6°), the coolest 23 August (66.2°).
86°/68.4°
Average high / low
−0.5°
Below normal
1 / 11
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
86.1°
86.9°
-0.4°
18 August – 27 August
86°
86.8°
-0.5°
28 August – 6 September
at normal
86.8°
—
August records over 66 years
92.3°21 August 1994All-time high
70.7°22 August 2022All-time low
Climate normals and records are computed from the nearest reference point — Comerío (4 mi).
Sun, 0985° / 69°0
85 °
Quebrada Grande, Sunday, 9 August
Partly cloudy. High 85°, low 69°.
Pressure30.03 inHg
Wind13.8 mph E
Humidity45%
Visibility6.2 mi
Dew point66°
Mon, 1088° / 69°0
88 °
Quebrada Grande, Monday, 10 August
Mostly clear. High 88°, low 69°.
Pressure30.06 inHg
Wind12.7 mph E
Humidity44%
Visibility6.2 mi
Dew point65°
Tue, 1187° / 68°0
87 °
Quebrada Grande, Tuesday, 11 August
Partly cloudy. High 87°, low 68°.
Pressure30.06 inHg
Wind11.3 mph E
Humidity45%
Visibility6.2 mi
Dew point65°
Wed, 1287° / 70°0.02
87 °
Quebrada Grande, Wednesday, 12 August
Light rain. High 87°, low 70°.
Pressure30.03 inHg
Wind11.9 mph SE
Humidity54%
Visibility6.2 mi
Dew point68°
Thu, 1383° / 68°0.02
83 °
Quebrada Grande, Thursday, 13 August
Light rain. High 83°, low 68°.
Pressure30.09 inHg
Wind14.9 mph SE
Humidity55%
Visibility—
Dew point63°
Fri, 1485° / 69°0.02
85 °
Quebrada Grande, Friday, 14 August
Light rain. High 85°, low 69°.
Pressure30.12 inHg
Wind14.5 mph E
Humidity46%
Visibility—
Dew point59°
Sat, 1587° / 68°0
87 °
Quebrada Grande, Saturday, 15 August
Mostly clear. High 87°, low 68°.
Pressure30.09 inHg
Wind16 mph E
Humidity45%
Visibility—
Dew point58°
Sun, 1687° / 69°0.03
87 °
Quebrada Grande, Sunday, 16 August
Light rain. High 87°, low 69°.
Pressure30.06 inHg
Wind14.2 mph E
Humidity49%
Visibility—
Dew point61°
Mon, 1789° / 68°0.01
89 °
Quebrada Grande, Monday, 17 August
Light rain. High 89°, low 68°.
Pressure30.00 inHg
Wind13.1 mph E
Humidity51%
Visibility—
Dew point63°
Tue, 1882° / 70°0.43
82 °
Quebrada Grande, Tuesday, 18 August
Rain. High 82°, low 70°.
Pressure29.97 inHg
Wind8.9 mph NE
Humidity61%
Visibility—
Dew point66°
Wed, 1985° / 69°0.01
85 °
Quebrada Grande, Wednesday, 19 August
Light rain. High 85°, low 69°.
Pressure30.00 inHg
Wind12.8 mph S
Humidity55%
Visibility—
Dew point64°
Thu, 2088° / 68°0.02
88 °
Quebrada Grande, Thursday, 20 August
Light rain. High 88°, low 68°.
Pressure30.06 inHg
Wind12.4 mph S
Humidity53%
Visibility—
Dew point64°
Fri, 2187° / 67°0
87 °
Quebrada Grande, Friday, 21 August
Partly cloudy. High 87°, low 67°.
Pressure30.06 inHg
Wind11.1 mph SE
Humidity60%
Visibility—
Dew point66°
Sat, 2286° / 67°0
86 °
Quebrada Grande, Saturday, 22 August
Partly cloudy. High 86°, low 67°.
Pressure30.03 inHg
Wind11.3 mph SE
Humidity57%
Visibility—
Dew point65°
Sun, 2388° / 66°0.01
88 °
Quebrada Grande, Sunday, 23 August
Light rain. High 88°, low 66°.
Pressure30.00 inHg
Wind12.2 mph SE
Humidity51%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 75°0.17
86 °
Quebrada Grande, Monday, 24 August
Climate normal for this date — 60-year average.
Average high86°
Average low75°
Average precipitation0.17 in
Chance of precipitation73%
Record high91° (1963)
Record low72° (2018)
Tue, 2587° / 75°0.13
87 °
Quebrada Grande, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.13 in
Chance of precipitation70%
Record high92° (1966)
Record low73° (1969)
Wed, 2687° / 75°0.13
87 °
Quebrada Grande, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.13 in
Chance of precipitation70%
Record high92° (1994)
Record low73° (1965)
Thu, 2787° / 75°0.11
87 °
Quebrada Grande, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.11 in
Chance of precipitation65%
Record high91° (1990)
Record low73° (2018)
Fri, 2887° / 75°0.17
87 °
Quebrada Grande, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.17 in
Chance of precipitation82%
Record high90° (2023)
Record low72° (2022)
Sat, 2987° / 75°0.11
87 °
Quebrada Grande, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.11 in
Chance of precipitation68%
Record high91° (2023)
Record low73° (2018)
Sun, 3087° / 75°0.22
87 °
Quebrada Grande, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.22 in
Chance of precipitation72%
Record high92° (1967)
Record low73° (2021)
Mon, 3187° / 75°0.14
87 °
Quebrada Grande, Monday, 31 August
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.14 in
Chance of precipitation65%
Record high91° (2004)
Record low72° (2021)
Tue, 0187° / 75°0.13
87 °
Quebrada Grande, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.13 in
Chance of precipitation73%
Record high91° (1967)
Record low71° (2022)
Wed, 0287° / 75°0.13
87 °
Quebrada Grande, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.13 in
Chance of precipitation80%
Record high91° (1967)
Record low71° (2022)
Thu, 0387° / 75°0.12
87 °
Quebrada Grande, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.12 in
Chance of precipitation65%
Record high91° (1967)
Record low73° (2012)
Fri, 0487° / 75°0.12
87 °
Quebrada Grande, Friday, 4 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.12 in
Chance of precipitation70%
Record high91° (1960)
Record low73° (1982)
Sat, 0587° / 75°0.24
87 °
Quebrada Grande, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.24 in
Chance of precipitation70%
Record high92° (1997)
Record low71° (1961)
Sun, 0687° / 75°0.2
87 °
Quebrada Grande, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high87°
Average low75°
Average precipitation0.2 in
Chance of precipitation70%
Record high91° (2012)
Record low73° (1961)
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 Quebrada Grande, 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 Quebrada Grande, 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.