Monthly outlook for San Germán, PR: average high 86.4°, average low 76.1°. That is 0.7° above the climate normal for October. Precipitation is expected on 13 days (about 1.6 inches), against a normal of 9 days and 2.2 inches. The warmest day looks like 21 October (90°), the coolest 22 October (74.1°).
86.4°/76.1°
Average high / low
+0.7°
Above normal
13 / 9
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
20 October – 29 October
87.2°
85.2°
+1.1°
30 October – 8 November
85°
84.8°
+0.1°
9 November – 18 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 (5 mi).
Wed, 2190° / 75°0.09
90 °
San Germán, Wednesday, 21 October
Rain. High 90°, low 75°.
Pressure29.91 inHg
Wind11.3 mph S
Humidity63%
Visibility6.2 mi
Dew point73°
Thu, 2286° / 74°0.04
86 °
San Germán, Thursday, 22 October
Light rain. High 86°, low 74°.
Pressure29.94 inHg
Wind9.4 mph SE
Humidity69%
Visibility5.5 mi
Dew point74°
Fri, 2387° / 77°0.11
87 °
San Germán, Friday, 23 October
Light rain. High 87°, low 77°.
Pressure29.94 inHg
Wind9.9 mph SE
Humidity74%
Visibility6.2 mi
Dew point76°
Sat, 2487° / 77°0.07
87 °
San Germán, Saturday, 24 October
Light rain. High 87°, low 77°.
Pressure29.94 inHg
Wind12.3 mph SE
Humidity70%
Visibility6.2 mi
Dew point75°
Sun, 2589° / 79°0.07
89 °
San Germán, Sunday, 25 October
Light rain. High 89°, low 79°.
Pressure29.94 inHg
Wind11.5 mph SE
Humidity66%
Visibility—
Dew point74°
Mon, 2687° / 78°0.15
87 °
San Germán, Monday, 26 October
Light rain. High 87°, low 78°.
Pressure29.97 inHg
Wind10.2 mph SE
Humidity66%
Visibility—
Dew point73°
Tue, 2787° / 77°0.09
87 °
San Germán, Tuesday, 27 October
Light rain. High 87°, low 77°.
Pressure29.97 inHg
Wind8.6 mph S
Humidity60%
Visibility—
Dew point70°
Wed, 2886° / 76°0.03
86 °
San Germán, Wednesday, 28 October
Light rain. High 86°, low 76°.
Pressure29.97 inHg
Wind4.9 mph S
Humidity60%
Visibility—
Dew point69°
Thu, 2985° / 77°0.11
85 °
San Germán, Thursday, 29 October
Light rain. High 85°, low 77°.
Pressure29.91 inHg
Wind7.8 mph SW
Humidity66%
Visibility—
Dew point71°
Fri, 3084° / 76°0.07
84 °
San Germán, Friday, 30 October
Light rain. High 84°, low 76°.
Pressure29.91 inHg
Wind7.7 mph SW
Humidity64%
Visibility—
Dew point70°
Sat, 3185° / 76°0.15
85 °
San Germán, Saturday, 31 October
Light rain. High 85°, low 76°.
Pressure29.94 inHg
Wind5.1 mph SW
Humidity61%
Visibility—
Dew point69°
Sun, 0185° / 75°0.12
85 °
San Germán, Sunday, 1 November
Light rain. High 85°, low 75°.
Pressure29.97 inHg
Wind8.1 mph S
Humidity59%
Visibility—
Dew point68°
Mon, 0285° / 75°0.25
85 °
San Germán, Monday, 2 November
Rain. High 85°, low 75°.
Pressure29.94 inHg
Wind6.8 mph S
Humidity60%
Visibility—
Dew point69°
Tue, 0385° / 76°0.04
85 °
San Germán, Tuesday, 3 November
Light rain. High 85°, low 76°.
Pressure29.88 inHg
Wind5.7 mph SW
Humidity61%
Visibility—
Dew point69°
Wed, 0485° / 76°0.03
85 °
San Germán, Wednesday, 4 November
Light rain. High 85°, low 76°.
Pressure29.88 inHg
Wind8.7 mph SW
Humidity60%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 0585° / 74°0.13
85 °
San Germán, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.13 in
Chance of precipitation47%
Record high89° (1960)
Record low66° (2025)
Fri, 0685° / 74°0.13
85 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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 °
San Germán, 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)
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 Germán, 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 Germán, 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.