Monthly outlook for Guaraguao, PR: average high 82.7°, average low 65.3°. That is 1.3° below the climate normal for August. Precipitation is expected on 6 days (about 0.8 inches), against a normal of 12 days and 2.4 inches. The warmest day looks like 23 August (86°), the coolest 22 August (63.5°).
82.7°/65.3°
Average high / low
−1.3°
Below normal
6 / 12
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.6°
85°
-1.4°
19 August – 28 August
83°
84.7°
-1°
29 August – 7 September
at normal
84.4°
—
August records over 66 years
92.1°2 August 1971All-time high
66.6°24 August 2018All-time low
Climate normals and records are computed from the nearest reference point — Adjuntas (4 mi).
Mon, 1078° / 68°0
78 °
Guaraguao, Monday, 10 August
Overcast. High 78°, low 68°.
Pressure30.06 inHg
Wind9.4 mph SE
Humidity45%
Visibility6.2 mi
Dew point64°
Tue, 1183° / 66°0.17
83 °
Guaraguao, Tuesday, 11 August
Rain. High 83°, low 66°.
Pressure30.03 inHg
Wind9.3 mph SE
Humidity48%
Visibility6.2 mi
Dew point66°
Wed, 1282° / 65°0
82 °
Guaraguao, Wednesday, 12 August
Overcast. High 82°, low 65°.
Pressure30.03 inHg
Wind9 mph SE
Humidity54%
Visibility6.2 mi
Dew point67°
Thu, 1382° / 65°0
82 °
Guaraguao, Thursday, 13 August
Overcast. High 82°, low 65°.
Pressure30.06 inHg
Wind11.7 mph SE
Humidity45%
Visibility6.2 mi
Dew point62°
Fri, 1484° / 65°0
84 °
Guaraguao, Friday, 14 August
Overcast. High 84°, low 65°.
Pressure30.09 inHg
Wind11.8 mph E
Humidity47%
Visibility—
Dew point57°
Sat, 1585° / 64°0
85 °
Guaraguao, Saturday, 15 August
Partly cloudy. High 85°, low 64°.
Pressure30.06 inHg
Wind11.2 mph SE
Humidity44%
Visibility—
Dew point56°
Sun, 1685° / 64°0
85 °
Guaraguao, Sunday, 16 August
Partly cloudy. High 85°, low 64°.
Pressure30.03 inHg
Wind8.9 mph E
Humidity37%
Visibility—
Dew point52°
Mon, 1783° / 65°0.06
83 °
Guaraguao, Monday, 17 August
Light rain. High 83°, low 65°.
Pressure29.94 inHg
Wind5 mph NE
Humidity39%
Visibility—
Dew point53°
Tue, 1883° / 64°0.03
83 °
Guaraguao, Tuesday, 18 August
Light rain. High 83°, low 64°.
Pressure30.00 inHg
Wind7.3 mph SE
Humidity45%
Visibility—
Dew point57°
Wed, 1985° / 66°0.02
85 °
Guaraguao, Wednesday, 19 August
Light rain. High 85°, low 66°.
Pressure30.09 inHg
Wind8.3 mph SE
Humidity47%
Visibility—
Dew point59°
Thu, 2083° / 64°0.22
83 °
Guaraguao, Thursday, 20 August
Light rain. High 83°, low 64°.
Pressure30.03 inHg
Wind6.5 mph SE
Humidity46%
Visibility—
Dew point58°
Fri, 2181° / 64°0.24
81 °
Guaraguao, Friday, 21 August
Rain. High 81°, low 64°.
Pressure30.03 inHg
Wind7.8 mph SE
Humidity50%
Visibility—
Dew point58°
Sat, 2281° / 64°0.06
81 °
Guaraguao, Saturday, 22 August
Light rain. High 81°, low 64°.
Pressure30.06 inHg
Wind9.6 mph SE
Humidity57%
Visibility—
Dew point61°
Sun, 2386° / 65°0
86 °
Guaraguao, Sunday, 23 August
Partly cloudy. High 86°, low 65°.
Pressure30.12 inHg
Wind11.6 mph SE
Humidity50%
Visibility—
Dew point60°
Mon, 2481° / 67°0.04
81 °
Guaraguao, Monday, 24 August
Light rain. High 81°, low 67°.
Pressure30.09 inHg
Wind10.2 mph SE
Humidity56%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 72°0.13
85 °
Guaraguao, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low72°
Average precipitation0.13 in
Chance of precipitation68%
Record high91° (1966)
Record low67° (1969)
Wed, 2684° / 72°0.17
84 °
Guaraguao, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low72°
Average precipitation0.17 in
Chance of precipitation70%
Record high91° (1994)
Record low67° (2021)
Thu, 2785° / 71°0.14
85 °
Guaraguao, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low71°
Average precipitation0.14 in
Chance of precipitation70%
Record high91° (1990)
Record low67° (2021)
Fri, 2884° / 71°0.17
84 °
Guaraguao, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low71°
Average precipitation0.17 in
Chance of precipitation77%
Record high89° (1994)
Record low69° (2022)
Sat, 2985° / 72°0.13
85 °
Guaraguao, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low72°
Average precipitation0.13 in
Chance of precipitation70%
Record high89° (1985)
Record low69° (2020)
Sun, 3085° / 72°0.22
85 °
Guaraguao, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low72°
Average precipitation0.22 in
Chance of precipitation70%
Record high92° (1994)
Record low69° (2021)
Mon, 3184° / 72°0.15
84 °
Guaraguao, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low72°
Average precipitation0.15 in
Chance of precipitation78%
Record high89° (1994)
Record low69° (1975)
Tue, 0185° / 71°0.18
85 °
Guaraguao, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low71°
Average precipitation0.18 in
Chance of precipitation78%
Record high89° (1994)
Record low68° (2022)
Wed, 0284° / 71°0.18
84 °
Guaraguao, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low71°
Average precipitation0.18 in
Chance of precipitation90%
Record high89° (2009)
Record low68° (1981)
Thu, 0384° / 71°0.15
84 °
Guaraguao, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low71°
Average precipitation0.15 in
Chance of precipitation77%
Record high90° (1967)
Record low68° (1965)
Fri, 0485° / 71°0.16
85 °
Guaraguao, Friday, 4 September
Climate normal for this date — 60-year average.
Average high85°
Average low71°
Average precipitation0.16 in
Chance of precipitation73%
Record high89° (1960)
Record low69° (2020)
Sat, 0584° / 72°0.26
84 °
Guaraguao, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low72°
Average precipitation0.26 in
Chance of precipitation75%
Record high91° (1997)
Record low66° (1961)
Sun, 0684° / 71°0.17
84 °
Guaraguao, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low71°
Average precipitation0.17 in
Chance of precipitation72%
Record high89° (1997)
Record low67° (1983)
Mon, 0784° / 71°0.17
84 °
Guaraguao, Monday, 7 September
Climate normal for this date — 60-year average.
Average high84°
Average low71°
Average precipitation0.17 in
Chance of precipitation68%
Record high89° (1978)
Record low68° (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 Guaraguao, 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 Guaraguao, 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.