Monthly outlook for Islote, PR: average high 84.5°, average low 76.6°. That is 0.7° below the climate normal for October. Precipitation is expected on 16 days (about 5.2 inches), against a normal of 12 days and 2.8 inches. The warmest day looks like 8 October (87.7°), the coolest 8 October (73.7°).
84.5°/76.6°
Average high / low
−0.7°
Below normal
16 / 12
Wet days / normal
5.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
84.9°
85.9°
-0.6°
17 October – 26 October
83.7°
85.2°
-0.8°
27 October – 5 November
at normal
84.3°
—
October records over 66 years
94.1°7 October 2023All-time high
67.8°29 October 2021All-time low
Climate normals and records are computed from the nearest reference point — Tiburones (3 mi).
Thu, 0888° / 74°0.1
88 °
Islote, Thursday, 8 October
Light rain. High 88°, low 74°.
Pressure29.94 inHg
Wind11.9 mph NE
Humidity76%
Visibility6.2 mi
Dew point77°
Fri, 0986° / 78°0.04
86 °
Islote, Friday, 9 October
Light rain. High 86°, low 78°.
Pressure29.97 inHg
Wind14.8 mph E
Humidity71%
Visibility6.2 mi
Dew point75°
Sat, 1084° / 78°0.28
84 °
Islote, Saturday, 10 October
Rain. High 84°, low 78°.
Pressure29.97 inHg
Wind12.1 mph E
Humidity78%
Visibility6.2 mi
Dew point75°
Sun, 1182° / 77°0.37
82 °
Islote, Sunday, 11 October
Rain. High 82°, low 77°.
Pressure29.94 inHg
Wind11.4 mph E
Humidity76%
Visibility—
Dew point73°
Mon, 1284° / 76°0.33
84 °
Islote, Monday, 12 October
Rain. High 84°, low 76°.
Pressure29.94 inHg
Wind13.4 mph SE
Humidity74%
Visibility—
Dew point74°
Tue, 1386° / 77°0.32
86 °
Islote, Tuesday, 13 October
Rain. High 86°, low 77°.
Pressure29.91 inHg
Wind11.5 mph NE
Humidity66%
Visibility—
Dew point72°
Wed, 1486° / 77°0.35
86 °
Islote, Wednesday, 14 October
Rain. High 86°, low 77°.
Pressure29.91 inHg
Wind9.6 mph N
Humidity62%
Visibility—
Dew point70°
Thu, 1584° / 77°0.34
84 °
Islote, Thursday, 15 October
Rain. High 84°, low 77°.
Pressure29.94 inHg
Wind7.4 mph NE
Humidity66%
Visibility—
Dew point70°
Fri, 1684° / 76°0.28
84 °
Islote, Friday, 16 October
Rain. High 84°, low 76°.
Pressure29.91 inHg
Wind7.7 mph NE
Humidity65%
Visibility—
Dew point70°
Sat, 1783° / 76°0.22
83 °
Islote, Saturday, 17 October
Rain. High 83°, low 76°.
Pressure29.91 inHg
Wind6.8 mph N
Humidity65%
Visibility—
Dew point69°
Sun, 1884° / 77°0.53
84 °
Islote, Sunday, 18 October
Rain. High 84°, low 77°.
Pressure29.88 inHg
Wind6.6 mph NE
Humidity70%
Visibility—
Dew point72°
Mon, 1984° / 77°0.74
84 °
Islote, Monday, 19 October
Rain. High 84°, low 77°.
Pressure29.88 inHg
Wind10.4 mph NE
Humidity71%
Visibility—
Dew point72°
Tue, 2084° / 77°0.5
84 °
Islote, Tuesday, 20 October
Rain. High 84°, low 77°.
Pressure29.88 inHg
Wind10.4 mph E
Humidity71%
Visibility—
Dew point72°
Wed, 2184° / 76°0.62
84 °
Islote, Wednesday, 21 October
Rain. High 84°, low 76°.
Pressure29.88 inHg
Wind7.7 mph NE
Humidity72%
Visibility—
Dew point73°
Thu, 2283° / 76°0.08
83 °
Islote, Thursday, 22 October
Light rain. High 83°, low 76°.
Pressure29.85 inHg
Wind7 mph NE
Humidity68%
Visibility—
Dew point71°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2385° / 73°0.16
85 °
Islote, Friday, 23 October
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.16 in
Chance of precipitation77%
Record high92° (2024)
Record low70° (1979)
Sat, 2485° / 74°0.16
85 °
Islote, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.16 in
Chance of precipitation75%
Record high91° (2020)
Record low70° (1984)
Sun, 2585° / 74°0.19
85 °
Islote, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.19 in
Chance of precipitation68%
Record high91° (2021)
Record low70° (2008)
Mon, 2685° / 74°0.19
85 °
Islote, Monday, 26 October
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.19 in
Chance of precipitation68%
Record high91° (2021)
Record low71° (1970)
Tue, 2785° / 74°0.19
85 °
Islote, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.19 in
Chance of precipitation68%
Record high90° (2021)
Record low70° (1970)
Wed, 2885° / 74°0.16
85 °
Islote, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.16 in
Chance of precipitation72%
Record high92° (2025)
Record low70° (1970)
Thu, 2985° / 74°0.2
85 °
Islote, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.2 in
Chance of precipitation72%
Record high93° (2025)
Record low68° (2021)
Fri, 3085° / 73°0.17
85 °
Islote, Friday, 30 October
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.17 in
Chance of precipitation75%
Record high92° (2021)
Record low70° (2018)
Sat, 3184° / 73°0.2
84 °
Islote, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.2 in
Chance of precipitation75%
Record high91° (2023)
Record low70° (1974)
Sun, 0184° / 73°0.17
84 °
Islote, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.17 in
Chance of precipitation68%
Record high90° (2023)
Record low69° (1967)
Mon, 0284° / 73°0.15
84 °
Islote, Monday, 2 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.15 in
Chance of precipitation67%
Record high91° (2025)
Record low69° (1961)
Tue, 0384° / 73°0.13
84 °
Islote, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.13 in
Chance of precipitation72%
Record high90° (1960)
Record low68° (1974)
Wed, 0483° / 73°0.15
83 °
Islote, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high83°
Average low73°
Average precipitation0.15 in
Chance of precipitation70%
Record high88° (1964)
Record low70° (1974)
Thu, 0584° / 73°0.17
84 °
Islote, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high84°
Average low73°
Average precipitation0.17 in
Chance of precipitation62%
Record high90° (2021)
Record low70° (1994)
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 Islote, 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 Islote, 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.