Monthly outlook for Río Grande, PR: average high 86.7°, average low 76.7°. That is 1.3° above the climate normal for October. Precipitation is expected on 8 days (about 2.3 inches), against a normal of 13 days and 3.2 inches. The warmest day looks like 24 October (90.3°), the coolest 3 November (74.1°).
86.7°/76.7°
Average high / low
+1.3°
Above normal
8 / 13
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
87.9°
84.5°
+1.9°
29 October – 7 November
84.6°
83.8°
+0.5°
8 November – 17 November
at normal
82.8°
—
October records over 66 years
92.8°11 October 2024All-time high
71.1°31 October 1961All-time low
Tue, 2088° / 76°0.05
88 °
Río Grande, Tuesday, 20 October
Light rain. High 88°, low 76°.
Pressure29.88 inHg
Wind4.9 mph NE
Humidity65%
Visibility6.2 mi
Dew point74°
Wed, 2188° / 76°0.12
88 °
Río Grande, Wednesday, 21 October
Rain. High 88°, low 76°.
Pressure29.91 inHg
Wind4.2 mph NE
Humidity60%
Visibility4.9 mi
Dew point72°
Thu, 2288° / 77°0.11
88 °
Río Grande, Thursday, 22 October
Light rain. High 88°, low 77°.
Pressure29.94 inHg
Wind3.7 mph SE
Humidity62%
Visibility6.2 mi
Dew point75°
Fri, 2388° / 77°0.04
88 °
Río Grande, Friday, 23 October
Light rain. High 88°, low 77°.
Pressure29.97 inHg
Wind6.5 mph SE
Humidity67%
Visibility—
Dew point74°
Sat, 2490° / 79°0.01
90 °
Río Grande, Saturday, 24 October
Light rain. High 90°, low 79°.
Pressure29.94 inHg
Wind9 mph SE
Humidity61%
Visibility—
Dew point73°
Sun, 2588° / 78°0.02
88 °
Río Grande, Sunday, 25 October
Light rain. High 88°, low 78°.
Pressure29.91 inHg
Wind10.4 mph SE
Humidity68%
Visibility—
Dew point74°
Mon, 2688° / 78°0.02
88 °
Río Grande, Monday, 26 October
Light rain. High 88°, low 78°.
Pressure29.94 inHg
Wind8.4 mph SE
Humidity67%
Visibility—
Dew point73°
Tue, 2787° / 77°0
87 °
Río Grande, Tuesday, 27 October
Overcast. High 87°, low 77°.
Pressure29.97 inHg
Wind7.5 mph NE
Humidity64%
Visibility—
Dew point71°
Wed, 2886° / 77°0
86 °
Río Grande, Wednesday, 28 October
Overcast. High 86°, low 77°.
Pressure29.94 inHg
Wind7.6 mph NE
Humidity66%
Visibility—
Dew point72°
Thu, 2985° / 76°0.01
85 °
Río Grande, Thursday, 29 October
Light rain. High 85°, low 76°.
Pressure29.88 inHg
Wind5.9 mph N
Humidity70%
Visibility—
Dew point73°
Fri, 3086° / 77°0.07
86 °
Río Grande, Friday, 30 October
Light rain. High 86°, low 77°.
Pressure29.88 inHg
Wind5 mph NE
Humidity67%
Visibility—
Dew point73°
Sat, 3184° / 77°0.81
84 °
Río Grande, Saturday, 31 October
Rain. High 84°, low 77°.
Pressure29.91 inHg
Wind3.2 mph S
Humidity74%
Visibility—
Dew point74°
Sun, 0185° / 76°0.7
85 °
Río Grande, Sunday, 1 November
Rain. High 85°, low 76°.
Pressure29.91 inHg
Wind3.7 mph E
Humidity69%
Visibility—
Dew point72°
Mon, 0285° / 75°0.18
85 °
Río Grande, Monday, 2 November
Light rain. High 85°, low 75°.
Pressure29.88 inHg
Wind4.3 mph S
Humidity64%
Visibility—
Dew point70°
Tue, 0384° / 74°0.02
84 °
Río Grande, Tuesday, 3 November
Light rain. High 84°, low 74°.
Pressure29.88 inHg
Wind4.3 mph W
Humidity67%
Visibility—
Dew point69°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1783° / 74°0.15
83 °
Río Grande, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high83°
Average low74°
Average precipitation0.15 in
Chance of precipitation73%
Record high87° (2025)
Record low72° (1961)
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.