Monthly outlook for San Luis, PR: average high 84.4°, average low 76.3°. That is 0.2° above the climate normal for October. Precipitation is expected on 14 days (about 2.1 inches), against a normal of 14 days and 3.6 inches. The warmest day looks like 13 October (87.8°), the coolest 16 October (73.8°).
84.4°/76.3°
Average high / low
+0.2°
Above normal
14 / 14
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
85°
84.1°
+0.4°
23 October – 1 November
83.4°
83.6°
-0.1°
2 November – 11 November
at normal
82.8°
—
October records over 66 years
89.6°14 October 2024All-time high
71.8°22 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Naguabo (2 mi).
Wed, 1488° / 76°0.07
88 °
San Luis, Wednesday, 14 October
Light rain. High 88°, low 76°.
Pressure29.97 inHg
Wind6 mph E
Humidity70%
Visibility6.2 mi
Dew point73°
Thu, 1585° / 74°0.13
85 °
San Luis, Thursday, 15 October
Light rain. High 85°, low 74°.
Pressure29.97 inHg
Wind7.7 mph E
Humidity74%
Visibility5.1 mi
Dew point75°
Fri, 1684° / 74°0.07
84 °
San Luis, Friday, 16 October
Light rain. High 84°, low 74°.
Pressure29.94 inHg
Wind7.9 mph E
Humidity65%
Visibility6.2 mi
Dew point72°
Sat, 1784° / 74°0.08
84 °
San Luis, Saturday, 17 October
Light rain. High 84°, low 74°.
Pressure29.97 inHg
Wind6.1 mph E
Humidity74%
Visibility—
Dew point73°
Sun, 1884° / 74°0.08
84 °
San Luis, Sunday, 18 October
Light rain. High 84°, low 74°.
Pressure30.00 inHg
Wind6.5 mph E
Humidity72%
Visibility—
Dew point73°
Mon, 1984° / 78°0.14
84 °
San Luis, Monday, 19 October
Light rain. High 84°, low 78°.
Pressure29.97 inHg
Wind9.2 mph E
Humidity74%
Visibility—
Dew point74°
Tue, 2083° / 78°0.05
83 °
San Luis, Tuesday, 20 October
Light rain. High 83°, low 78°.
Pressure29.91 inHg
Wind5.7 mph SE
Humidity73%
Visibility—
Dew point73°
Wed, 2184° / 77°0.01
84 °
San Luis, Wednesday, 21 October
Light rain. High 84°, low 77°.
Pressure29.88 inHg
Wind12.2 mph S
Humidity68%
Visibility—
Dew point72°
Thu, 2285° / 75°0.15
85 °
San Luis, Thursday, 22 October
Light rain. High 85°, low 75°.
Pressure29.85 inHg
Wind11.6 mph S
Humidity70%
Visibility—
Dew point73°
Fri, 2385° / 78°0.42
85 °
San Luis, Friday, 23 October
Rain. High 85°, low 78°.
Pressure29.94 inHg
Wind7.7 mph S
Humidity72%
Visibility—
Dew point74°
Sat, 2481° / 77°0.08
81 °
San Luis, Saturday, 24 October
Light rain. High 81°, low 77°.
Pressure30.00 inHg
Wind9.4 mph S
Humidity78%
Visibility—
Dew point73°
Sun, 2584° / 77°0.24
84 °
San Luis, Sunday, 25 October
Rain. High 84°, low 77°.
Pressure30.00 inHg
Wind8.9 mph SW
Humidity63%
Visibility—
Dew point69°
Mon, 2684° / 77°0.45
84 °
San Luis, Monday, 26 October
Light rain. High 84°, low 77°.
Pressure29.97 inHg
Wind7.8 mph E
Humidity70%
Visibility—
Dew point72°
Tue, 2784° / 77°0.02
84 °
San Luis, Tuesday, 27 October
Light rain. High 84°, low 77°.
Pressure30.00 inHg
Wind7.6 mph E
Humidity69%
Visibility—
Dew point71°
Wed, 2884° / 77°0.06
84 °
San Luis, Wednesday, 28 October
Light rain. High 84°, low 77°.
Pressure29.97 inHg
Wind12.5 mph E
Humidity77%
Visibility—
Dew point74°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2984° / 76°0.22
84 °
San Luis, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.22 in
Chance of precipitation83%
Record high86° (2016)
Record low73° (2021)
Fri, 3083° / 76°0.2
83 °
San Luis, Friday, 30 October
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.2 in
Chance of precipitation90%
Record high86° (2025)
Record low72° (1974)
Sat, 3183° / 76°0.26
83 °
San Luis, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.26 in
Chance of precipitation87%
Record high86° (2012)
Record low73° (1961)
Sun, 0183° / 76°0.24
83 °
San Luis, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.24 in
Chance of precipitation92%
Record high87° (1960)
Record low73° (1974)
Mon, 0283° / 76°0.21
83 °
San Luis, Monday, 2 November
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.21 in
Chance of precipitation90%
Record high86° (1960)
Record low73° (1976)
Tue, 0383° / 76°0.2
83 °
San Luis, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.2 in
Chance of precipitation90%
Record high87° (1960)
Record low71° (1974)
Wed, 0483° / 76°0.23
83 °
San Luis, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.23 in
Chance of precipitation93%
Record high86° (1960)
Record low73° (2022)
Thu, 0583° / 76°0.26
83 °
San Luis, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.26 in
Chance of precipitation87%
Record high86° (1960)
Record low72° (2022)
Fri, 0683° / 76°0.24
83 °
San Luis, Friday, 6 November
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.24 in
Chance of precipitation90%
Record high86° (2011)
Record low73° (2018)
Sat, 0783° / 76°0.3
83 °
San Luis, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high83°
Average low76°
Average precipitation0.3 in
Chance of precipitation82%
Record high86° (1981)
Record low72° (2014)
Sun, 0883° / 75°0.28
83 °
San Luis, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.28 in
Chance of precipitation87%
Record high85° (2012)
Record low73° (1974)
Mon, 0982° / 76°0.3
82 °
San Luis, Monday, 9 November
Climate normal for this date — 60-year average.
Average high82°
Average low76°
Average precipitation0.3 in
Chance of precipitation90%
Record high85° (2025)
Record low72° (1996)
Tue, 1082° / 75°0.25
82 °
San Luis, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high82°
Average low75°
Average precipitation0.25 in
Chance of precipitation82%
Record high85° (1963)
Record low72° (1974)
Wed, 1183° / 75°0.27
83 °
San Luis, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.27 in
Chance of precipitation80%
Record high85° (1987)
Record low71° (2000)
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 San Luis, 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 San Luis, 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.