Monthly outlook for Rosario, PR: average high 82.7°, average low 73.7°. That is 1.3° below the climate normal for October. Precipitation is expected on 9 days (about 1.6 inches), against a normal of 9 days and 2.2 inches. The warmest day looks like 21 October (88.9°), the coolest 21 October (72°).
82.7°/73.7°
Average high / low
−1.3°
Below normal
9 / 9
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
83.5°
85.2°
-0.9°
31 October – 9 November
81.5°
84.8°
-1.8°
10 November – 19 November
at normal
84.4°
—
October records over 66 years
92.7°8 October 2006All-time high
66.7°2 October 2025All-time low
Climate normals and records are computed from the nearest reference point — Sabana Grande (9 mi).
Thu, 2282° / 73°0.37
82 °
Rosario, Thursday, 22 October
Rain. High 82°, low 73°.
Pressure29.97 inHg
Wind5.1 mph SE
Humidity74%
Visibility5.9 mi
Dew point74°
Fri, 2383° / 73°0.02
83 °
Rosario, Friday, 23 October
Light rain. High 83°, low 73°.
Pressure29.97 inHg
Wind7.6 mph SE
Humidity73%
Visibility6.2 mi
Dew point75°
Sat, 2483° / 76°0.02
83 °
Rosario, Saturday, 24 October
Light rain. High 83°, low 76°.
Pressure29.91 inHg
Wind12.3 mph SE
Humidity72%
Visibility6.2 mi
Dew point75°
Sun, 2585° / 75°0.02
85 °
Rosario, Sunday, 25 October
Light rain. High 85°, low 75°.
Pressure29.94 inHg
Wind11.8 mph SE
Humidity70%
Visibility—
Dew point71°
Mon, 2682° / 76°0.1
82 °
Rosario, Monday, 26 October
Light rain. High 82°, low 76°.
Pressure30.00 inHg
Wind12.2 mph SE
Humidity80%
Visibility—
Dew point72°
Tue, 2783° / 76°0.13
83 °
Rosario, Tuesday, 27 October
Light rain. High 83°, low 76°.
Pressure29.97 inHg
Wind8.6 mph SW
Humidity64%
Visibility—
Dew point69°
Wed, 2883° / 74°0.2
83 °
Rosario, Wednesday, 28 October
Light rain. High 83°, low 74°.
Pressure29.97 inHg
Wind4.4 mph SW
Humidity62%
Visibility—
Dew point67°
Thu, 2983° / 74°0.15
83 °
Rosario, Thursday, 29 October
Light rain. High 83°, low 74°.
Pressure29.94 inHg
Wind8.2 mph SW
Humidity62%
Visibility—
Dew point67°
Fri, 3081° / 74°0.19
81 °
Rosario, Friday, 30 October
Rain. High 81°, low 74°.
Pressure29.91 inHg
Wind6.1 mph SW
Humidity66%
Visibility—
Dew point68°
Sat, 3181° / 73°0.04
81 °
Rosario, Saturday, 31 October
Light rain. High 81°, low 73°.
Pressure29.91 inHg
Wind6 mph W
Humidity65%
Visibility—
Dew point67°
Sun, 0181° / 73°0.3
81 °
Rosario, Sunday, 1 November
Light rain. High 81°, low 73°.
Pressure29.91 inHg
Wind7.5 mph S
Humidity66%
Visibility—
Dew point68°
Mon, 0282° / 73°0.05
82 °
Rosario, Monday, 2 November
Light rain. High 82°, low 73°.
Pressure29.91 inHg
Wind11.9 mph S
Humidity64%
Visibility—
Dew point67°
Tue, 0382° / 73°0.01
82 °
Rosario, Tuesday, 3 November
Light rain. High 82°, low 73°.
Pressure29.91 inHg
Wind10.6 mph SW
Humidity66%
Visibility—
Dew point68°
Wed, 0482° / 73°0.02
82 °
Rosario, Wednesday, 4 November
Light rain. High 82°, low 73°.
Pressure29.94 inHg
Wind8.1 mph W
Humidity68%
Visibility—
Dew point68°
Thu, 0582° / 73°0.02
82 °
Rosario, Thursday, 5 November
Light rain. High 82°, low 73°.
Pressure29.88 inHg
Wind12.1 mph N
Humidity66%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0685° / 74°0.13
85 °
Rosario, Friday, 6 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.13 in
Chance of precipitation55%
Record high89° (2009)
Record low70° (2000)
Sat, 0785° / 74°0.17
85 °
Rosario, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.17 in
Chance of precipitation53%
Record high90° (1993)
Record low69° (2025)
Sun, 0885° / 74°0.11
85 °
Rosario, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.11 in
Chance of precipitation65%
Record high90° (1993)
Record low71° (2018)
Mon, 0985° / 74°0.16
85 °
Rosario, Monday, 9 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.16 in
Chance of precipitation62%
Record high89° (1980)
Record low72° (1996)
Tue, 1084° / 74°0.12
84 °
Rosario, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.12 in
Chance of precipitation52%
Record high90° (1980)
Record low71° (2018)
Wed, 1184° / 74°0.11
84 °
Rosario, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.11 in
Chance of precipitation45%
Record high90° (1980)
Record low69° (2000)
Thu, 1284° / 74°0.11
84 °
Rosario, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.11 in
Chance of precipitation45%
Record high89° (1993)
Record low68° (1981)
Fri, 1385° / 74°0.09
85 °
Rosario, Friday, 13 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.09 in
Chance of precipitation55%
Record high89° (1980)
Record low69° (1984)
Sat, 1484° / 74°0.06
84 °
Rosario, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.06 in
Chance of precipitation37%
Record high89° (1980)
Record low70° (2020)
Sun, 1584° / 74°0.08
84 °
Rosario, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.08 in
Chance of precipitation43%
Record high89° (2015)
Record low68° (2020)
Mon, 1684° / 74°0.07
84 °
Rosario, Monday, 16 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.07 in
Chance of precipitation37%
Record high88° (1967)
Record low68° (2021)
Tue, 1785° / 74°0.08
85 °
Rosario, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.08 in
Chance of precipitation37%
Record high91° (2021)
Record low68° (2021)
Wed, 1885° / 74°0.1
85 °
Rosario, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.1 in
Chance of precipitation43%
Record high90° (1962)
Record low67° (2025)
Thu, 1985° / 73°0.11
85 °
Rosario, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high85°
Average low73°
Average precipitation0.11 in
Chance of precipitation42%
Record high89° (1962)
Record low66° (2018)
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 Rosario, 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 Rosario, 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.