Monthly outlook for Pasto Viejo, PR: average high 86.4°, average low 77.9°. That is 1° above the climate normal for August. Precipitation is expected on 14 days (about 3.6 inches), against a normal of 13 days and 2.8 inches. The warmest day looks like 10 August (91.5°), the coolest 24 August (76.4°).
86.4°/77.9°
Average high / low
+1°
Above normal
14 / 13
Wet days / normal
3.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87.1°
84.5°
+1.4°
19 August – 28 August
85.4°
84.7°
+0.4°
29 August – 7 September
at normal
85°
—
August records over 66 years
89.4°31 August 2004All-time high
71.8°21 August 2022All-time low
Climate normals and records are computed from the nearest reference point — Antón Ruíz (2 mi).
Mon, 1091° / 80°0
91 °
Pasto Viejo, Monday, 10 August
Light rain. High 91°, low 80°.
Pressure30.09 inHg
Wind14.1 mph E
Humidity60%
Visibility6.2 mi
Dew point71°
Tue, 1185° / 77°0.11
85 °
Pasto Viejo, Tuesday, 11 August
Light rain. High 85°, low 77°.
Pressure30.06 inHg
Wind12.4 mph E
Humidity69%
Visibility6.2 mi
Dew point73°
Wed, 1286° / 77°0.29
86 °
Pasto Viejo, Wednesday, 12 August
Light rain. High 86°, low 77°.
Pressure30.03 inHg
Wind12.8 mph E
Humidity68%
Visibility6.2 mi
Dew point74°
Thu, 1385° / 79°0.06
85 °
Pasto Viejo, Thursday, 13 August
Light rain. High 85°, low 79°.
Pressure30.09 inHg
Wind17.9 mph E
Humidity67%
Visibility—
Dew point72°
Fri, 1486° / 79°0.1
86 °
Pasto Viejo, Friday, 14 August
Light rain. High 86°, low 79°.
Pressure30.15 inHg
Wind19.5 mph E
Humidity66%
Visibility—
Dew point72°
Sat, 1585° / 78°0.17
85 °
Pasto Viejo, Saturday, 15 August
Light rain. High 85°, low 78°.
Pressure30.09 inHg
Wind19.2 mph E
Humidity73%
Visibility—
Dew point74°
Sun, 1687° / 79°0.04
87 °
Pasto Viejo, Sunday, 16 August
Light rain. High 87°, low 79°.
Pressure30.03 inHg
Wind14.4 mph E
Humidity62%
Visibility—
Dew point71°
Mon, 1787° / 77°0.02
87 °
Pasto Viejo, Monday, 17 August
Light rain. High 87°, low 77°.
Pressure30.00 inHg
Wind12.6 mph NE
Humidity60%
Visibility—
Dew point69°
Tue, 1887° / 77°0.39
87 °
Pasto Viejo, Tuesday, 18 August
Rain. High 87°, low 77°.
Pressure30.00 inHg
Wind8.7 mph E
Humidity73%
Visibility—
Dew point75°
Wed, 1986° / 79°0.42
86 °
Pasto Viejo, Wednesday, 19 August
Light rain. High 86°, low 79°.
Pressure30.06 inHg
Wind8.2 mph SE
Humidity73%
Visibility—
Dew point75°
Thu, 2084° / 78°0.28
84 °
Pasto Viejo, Thursday, 20 August
Rain. High 84°, low 78°.
Pressure30.03 inHg
Wind10.2 mph E
Humidity77%
Visibility—
Dew point74°
Fri, 2186° / 77°0.19
86 °
Pasto Viejo, Friday, 21 August
Light rain. High 86°, low 77°.
Pressure30.00 inHg
Wind11.8 mph E
Humidity70%
Visibility—
Dew point74°
Sat, 2285° / 77°0.77
85 °
Pasto Viejo, Saturday, 22 August
Rain. High 85°, low 77°.
Pressure30.00 inHg
Wind11.3 mph E
Humidity68%
Visibility—
Dew point73°
Sun, 2384° / 77°0.45
84 °
Pasto Viejo, Sunday, 23 August
Rain. High 84°, low 77°.
Pressure30.06 inHg
Wind15 mph SE
Humidity74%
Visibility—
Dew point74°
Mon, 2486° / 76°0.21
86 °
Pasto Viejo, Monday, 24 August
Light rain. High 86°, low 76°.
Pressure30.09 inHg
Wind13 mph E
Humidity68%
Visibility—
Dew point72°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 77°0.16
85 °
Pasto Viejo, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.16 in
Chance of precipitation78%
Record high87° (1963)
Record low74° (2024)
Wed, 2685° / 77°0.14
85 °
Pasto Viejo, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.14 in
Chance of precipitation82%
Record high88° (2015)
Record low73° (2018)
Thu, 2785° / 77°0.14
85 °
Pasto Viejo, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.14 in
Chance of precipitation80%
Record high87° (2010)
Record low73° (2022)
Fri, 2885° / 77°0.23
85 °
Pasto Viejo, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.23 in
Chance of precipitation93%
Record high88° (2010)
Record low72° (2022)
Sat, 2985° / 77°0.15
85 °
Pasto Viejo, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.15 in
Chance of precipitation75%
Record high89° (2010)
Record low73° (2018)
Sun, 3085° / 77°0.26
85 °
Pasto Viejo, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.26 in
Chance of precipitation78%
Record high87° (1995)
Record low74° (2018)
Mon, 3185° / 77°0.17
85 °
Pasto Viejo, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.17 in
Chance of precipitation85%
Record high89° (2004)
Record low73° (2021)
Tue, 0185° / 77°0.16
85 °
Pasto Viejo, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.16 in
Chance of precipitation80%
Record high88° (2005)
Record low73° (2021)
Wed, 0285° / 77°0.18
85 °
Pasto Viejo, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.18 in
Chance of precipitation90%
Record high88° (2010)
Record low73° (1986)
Thu, 0385° / 77°0.15
85 °
Pasto Viejo, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.15 in
Chance of precipitation78%
Record high89° (2003)
Record low73° (2023)
Fri, 0485° / 77°0.17
85 °
Pasto Viejo, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.17 in
Chance of precipitation80%
Record high89° (1960)
Record low74° (1982)
Sat, 0585° / 77°0.28
85 °
Pasto Viejo, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.28 in
Chance of precipitation85%
Record high88° (2012)
Record low74° (1961)
Sun, 0685° / 77°0.19
85 °
Pasto Viejo, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.19 in
Chance of precipitation80%
Record high89° (2012)
Record low73° (2024)
Mon, 0785° / 77°0.18
85 °
Pasto Viejo, Monday, 7 September
Climate normal for this date — 60-year average.
Average high85°
Average low77°
Average precipitation0.18 in
Chance of precipitation82%
Record high89° (2012)
Record low73° (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 Pasto Viejo, 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 Pasto Viejo, 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.