Monthly outlook for Altamira, PR: average high 87.9°, average low 75.1°. That is 1.4° above the climate normal for October. Precipitation is expected on 9 days (about 1.7 inches), against a normal of 11 days and 2.4 inches. The warmest day looks like 25 October (89.8°), the coolest 22 October (73.1°).
87.9°/75.1°
Average high / low
+1.4°
Above normal
9 / 11
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
88.2°
85.7°
+1.4°
30 October – 8 November
87.5°
84.7°
+1.5°
9 November – 18 November
at normal
83.8°
—
October records over 66 years
95.5°24 October 2024All-time high
69.1°29 October 2021All-time low
Climate normals and records are computed from the nearest reference point — Guaynabo (1 mi).
Wed, 2189° / 75°0.2
89 °
Altamira, Wednesday, 21 October
Rain. High 89°, low 75°.
Pressure29.88 inHg
Wind5.9 mph SE
Humidity56%
Visibility6.1 mi
Dew point72°
Thu, 2288° / 73°0.2
88 °
Altamira, Thursday, 22 October
Rain. High 88°, low 73°.
Pressure29.94 inHg
Wind6.9 mph E
Humidity74%
Visibility2.2 mi
Dew point76°
Fri, 2387° / 75°0.19
87 °
Altamira, Friday, 23 October
Rain. High 87°, low 75°.
Pressure29.97 inHg
Wind4.3 mph E
Humidity68%
Visibility6.2 mi
Dew point75°
Sat, 2489° / 76°0
89 °
Altamira, Saturday, 24 October
Overcast. High 89°, low 76°.
Pressure29.97 inHg
Wind8.9 mph SE
Humidity64%
Visibility—
Dew point72°
Sun, 2590° / 76°0
90 °
Altamira, Sunday, 25 October
Partly cloudy. High 90°, low 76°.
Pressure29.94 inHg
Wind8.1 mph E
Humidity61%
Visibility—
Dew point72°
Mon, 2687° / 77°0.15
87 °
Altamira, Monday, 26 October
Light rain. High 87°, low 77°.
Pressure29.94 inHg
Wind4.7 mph S
Humidity64%
Visibility—
Dew point72°
Tue, 2788° / 76°0
88 °
Altamira, Tuesday, 27 October
Partly cloudy. High 88°, low 76°.
Pressure29.97 inHg
Wind9.6 mph NE
Humidity60%
Visibility—
Dew point69°
Wed, 2888° / 74°0
88 °
Altamira, Wednesday, 28 October
Mostly clear. High 88°, low 74°.
Pressure29.94 inHg
Wind9.1 mph NE
Humidity58%
Visibility—
Dew point69°
Thu, 2988° / 74°0
88 °
Altamira, Thursday, 29 October
Clear. High 88°, low 74°.
Pressure29.91 inHg
Wind9.3 mph N
Humidity60%
Visibility—
Dew point69°
Fri, 3088° / 75°0
88 °
Altamira, Friday, 30 October
Clear. High 88°, low 75°.
Pressure29.91 inHg
Wind9 mph NE
Humidity61%
Visibility—
Dew point70°
Sat, 3187° / 75°0.17
87 °
Altamira, Saturday, 31 October
Light rain. High 87°, low 75°.
Pressure29.97 inHg
Wind9.2 mph E
Humidity63%
Visibility—
Dew point72°
Sun, 0188° / 76°0.1
88 °
Altamira, Sunday, 1 November
Light rain. High 88°, low 76°.
Pressure29.97 inHg
Wind9.3 mph NE
Humidity61%
Visibility—
Dew point71°
Mon, 0286° / 76°0.22
86 °
Altamira, Monday, 2 November
Rain. High 86°, low 76°.
Pressure29.91 inHg
Wind7.7 mph NE
Humidity63%
Visibility—
Dew point71°
Tue, 0387° / 76°0.37
87 °
Altamira, Tuesday, 3 November
Rain. High 87°, low 76°.
Pressure29.88 inHg
Wind7.8 mph E
Humidity57%
Visibility—
Dew point69°
Wed, 0487° / 75°0
87 °
Altamira, Wednesday, 4 November
Clear. High 87°, low 75°.
Pressure29.94 inHg
Wind4.3 mph S
Humidity57%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0585° / 73°0.14
85 °
Altamira, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.14 in
Chance of precipitation62%
Record high90° (1960)
Record low71° (1994)
Fri, 0685° / 73°0.17
85 °
Altamira, Friday, 6 November
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.17 in
Chance of precipitation60%
Record high91° (2021)
Record low71° (2018)
Sat, 0785° / 73°0.19
85 °
Altamira, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.19 in
Chance of precipitation60%
Record high91° (2021)
Record low70° (2018)
Sun, 0884° / 73°0.18
84 °
Altamira, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.18 in
Chance of precipitation68%
Record high91° (2021)
Record low70° (2021)
Mon, 0984° / 73°0.2
84 °
Altamira, Monday, 9 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.2 in
Chance of precipitation67%
Record high89° (2021)
Record low70° (1996)
Tue, 1084° / 73°0.13
84 °
Altamira, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.13 in
Chance of precipitation67%
Record high90° (2025)
Record low69° (1966)
Wed, 1184° / 73°0.16
84 °
Altamira, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.16 in
Chance of precipitation58%
Record high90° (2019)
Record low69° (2000)
Thu, 1284° / 73°0.15
84 °
Altamira, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.15 in
Chance of precipitation63%
Record high89° (2019)
Record low68° (1966)
Fri, 1384° / 73°0.13
84 °
Altamira, Friday, 13 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.13 in
Chance of precipitation65%
Record high90° (2019)
Record low70° (1982)
Sat, 1484° / 73°0.1
84 °
Altamira, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.1 in
Chance of precipitation53%
Record high90° (2021)
Record low69° (1966)
Sun, 1584° / 73°0.12
84 °
Altamira, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.12 in
Chance of precipitation60%
Record high90° (2025)
Record low70° (1966)
Mon, 1683° / 73°0.13
83 °
Altamira, Monday, 16 November
Climate normal for this date — 60-year average.
Average high83°
Average low73°
Average precipitation0.13 in
Chance of precipitation58%
Record high89° (2023)
Record low68° (1966)
Tue, 1784° / 73°0.12
84 °
Altamira, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.12 in
Chance of precipitation58%
Record high90° (2023)
Record low70° (2004)
Wed, 1884° / 73°0.14
84 °
Altamira, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.14 in
Chance of precipitation60%
Record high89° (2019)
Record low69° (2004)
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 Altamira, 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 Altamira, 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.