Monthly outlook for Río Grande, PR: average high 87.1°, average low 77.7°. That is 1.5° above the climate normal for October. Precipitation is expected on 14 days (about 1.9 inches), against a normal of 13 days and 3.2 inches. The warmest day looks like 23 October (89.7°), the coolest 21 October (76.4°).
87.1°/77.7°
Average high / low
+1.5°
Above normal
14 / 13
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
88.1°
84.6°
+1.9°
28 October – 6 November
85.4°
83.8°
+0.9°
7 November – 16 November
at normal
82.9°
—
October records over 66 years
92.8°11 October 2024All-time high
71.1°31 October 1961All-time low
Mon, 1989° / 78°0.09
89 °
Río Grande, Monday, 19 October
Light rain. High 89°, low 78°.
Pressure29.91 inHg
Wind8.4 mph NE
Humidity65%
Visibility6.1 mi
Dew point73°
Tue, 2089° / 77°0.06
89 °
Río Grande, Tuesday, 20 October
Light rain. High 89°, low 77°.
Pressure29.88 inHg
Wind3.8 mph NE
Humidity63%
Visibility6.2 mi
Dew point74°
Wed, 2189° / 76°0.07
89 °
Río Grande, Wednesday, 21 October
Light rain. High 89°, low 76°.
Pressure29.91 inHg
Wind3.7 mph NE
Humidity63%
Visibility4.8 mi
Dew point73°
Thu, 2289° / 78°0.08
89 °
Río Grande, Thursday, 22 October
Light rain. High 89°, low 78°.
Pressure29.94 inHg
Wind9.5 mph S
Humidity64%
Visibility—
Dew point74°
Fri, 2390° / 79°0.01
90 °
Río Grande, Friday, 23 October
Light rain. High 90°, low 79°.
Pressure29.94 inHg
Wind10.1 mph SE
Humidity64%
Visibility—
Dew point74°
Sat, 2484° / 79°0.19
84 °
Río Grande, Saturday, 24 October
Light rain. High 84°, low 79°.
Pressure29.91 inHg
Wind9.8 mph SE
Humidity78%
Visibility—
Dew point75°
Sun, 2586° / 78°0.15
86 °
Río Grande, Sunday, 25 October
Light rain. High 86°, low 78°.
Pressure29.94 inHg
Wind12.3 mph SE
Humidity69%
Visibility—
Dew point73°
Mon, 2688° / 78°0.04
88 °
Río Grande, Monday, 26 October
Light rain. High 88°, low 78°.
Pressure29.97 inHg
Wind12.4 mph SE
Humidity69%
Visibility—
Dew point75°
Tue, 2787° / 78°0.05
87 °
Río Grande, Tuesday, 27 October
Light rain. High 87°, low 78°.
Pressure30.00 inHg
Wind10.6 mph E
Humidity68%
Visibility—
Dew point73°
Wed, 2887° / 78°0.08
87 °
Río Grande, Wednesday, 28 October
Light rain. High 87°, low 78°.
Pressure29.97 inHg
Wind9.3 mph NE
Humidity70%
Visibility—
Dew point74°
Thu, 2987° / 78°0.06
87 °
Río Grande, Thursday, 29 October
Light rain. High 87°, low 78°.
Pressure29.94 inHg
Wind8 mph NE
Humidity64%
Visibility—
Dew point72°
Fri, 3086° / 78°0.24
86 °
Río Grande, Friday, 30 October
Light rain. High 86°, low 78°.
Pressure29.94 inHg
Wind8.2 mph NE
Humidity71%
Visibility—
Dew point74°
Sat, 3183° / 78°0.46
83 °
Río Grande, Saturday, 31 October
Rain. High 83°, low 78°.
Pressure29.94 inHg
Wind13.2 mph E
Humidity77%
Visibility—
Dew point74°
Sun, 0186° / 78°0.22
86 °
Río Grande, Sunday, 1 November
Light rain. High 86°, low 78°.
Pressure29.94 inHg
Wind14.1 mph E
Humidity65%
Visibility—
Dew point71°
Mon, 0285° / 77°0.08
85 °
Río Grande, Monday, 2 November
Light rain. High 85°, low 77°.
Pressure29.94 inHg
Wind11 mph NE
Humidity58%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0384° / 75°0.17
84 °
Río Grande, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high84°
Average low75°
Average precipitation0.17 in
Chance of precipitation88%
Record high90° (1960)
Record low72° (1974)
Wed, 0483° / 75°0.19
83 °
Río Grande, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.19 in
Chance of precipitation85%
Record high88° (1960)
Record low72° (2000)
Thu, 0583° / 75°0.2
83 °
Río Grande, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.2 in
Chance of precipitation78%
Record high88° (1960)
Record low71° (2000)
Fri, 0683° / 75°0.2
83 °
Río Grande, Friday, 6 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.2 in
Chance of precipitation78%
Record high88° (2001)
Record low73° (1965)
Sat, 0783° / 75°0.23
83 °
Río Grande, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.23 in
Chance of precipitation77%
Record high87° (2023)
Record low72° (2014)
Sun, 0883° / 75°0.25
83 °
Río Grande, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.25 in
Chance of precipitation83%
Record high87° (2012)
Record low72° (1966)
Mon, 0983° / 75°0.25
83 °
Río Grande, Monday, 9 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.25 in
Chance of precipitation80%
Record high87° (2006)
Record low70° (1996)
Tue, 1083° / 75°0.18
83 °
Río Grande, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.18 in
Chance of precipitation80%
Record high86° (1968)
Record low71° (1966)
Wed, 1183° / 75°0.2
83 °
Río Grande, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.2 in
Chance of precipitation73%
Record high86° (1990)
Record low71° (1966)
Thu, 1283° / 74°0.19
83 °
Río Grande, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.19 in
Chance of precipitation75%
Record high86° (2024)
Record low70° (1984)
Fri, 1383° / 74°0.15
83 °
Río Grande, Friday, 13 November
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.15 in
Chance of precipitation83%
Record high88° (2024)
Record low71° (1982)
Sat, 1483° / 74°0.13
83 °
Río Grande, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.13 in
Chance of precipitation78%
Record high87° (2025)
Record low71° (1982)
Sun, 1583° / 75°0.14
83 °
Río Grande, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high83°
Average low75°
Average precipitation0.14 in
Chance of precipitation70%
Record high87° (2025)
Record low70° (1961)
Mon, 1682° / 74°0.15
82 °
Río Grande, Monday, 16 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.15 in
Chance of precipitation80%
Record high86° (2001)
Record low70° (1966)
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 Río Grande, 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 Río Grande, 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.