Monthly outlook for San Germán, PR: average high 85°, average low 75.7°. That is 0.3° below the climate normal for October. Precipitation is expected on 10 days (about 2.1 inches), against a normal of 10 days and 2.3 inches. The warmest day looks like 14 October (91°), the coolest 17 October (73.5°).
85°/75.7°
Average high / low
−0.3°
Below normal
10 / 10
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
86°
85.7°
+0.2°
23 October – 1 November
83.4°
85.1°
-1°
2 November – 11 November
at normal
84.6°
—
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, 1491° / 75°0.02
91 °
San Germán, Wednesday, 14 October
Light rain. High 91°, low 75°.
Pressure29.94 inHg
Wind8.4 mph S
Humidity62%
Visibility6.2 mi
Dew point73°
Thu, 1584° / 75°0.11
84 °
San Germán, Thursday, 15 October
Rain. High 84°, low 75°.
Pressure29.94 inHg
Wind8 mph W
Humidity79%
Visibility6.2 mi
Dew point76°
Fri, 1684° / 75°0.06
84 °
San Germán, Friday, 16 October
Light rain. High 84°, low 75°.
Pressure29.94 inHg
Wind9 mph W
Humidity77%
Visibility6.2 mi
Dew point76°
Sat, 1785° / 73°0.05
85 °
San Germán, Saturday, 17 October
Light rain. High 85°, low 73°.
Pressure29.94 inHg
Wind6.9 mph W
Humidity75%
Visibility—
Dew point73°
Sun, 1884° / 76°0.09
84 °
San Germán, Sunday, 18 October
Light rain. High 84°, low 76°.
Pressure29.97 inHg
Wind4.9 mph NW
Humidity75%
Visibility—
Dew point74°
Mon, 1986° / 76°0.19
86 °
San Germán, Monday, 19 October
Light rain. High 86°, low 76°.
Pressure29.97 inHg
Wind7.1 mph SE
Humidity61%
Visibility—
Dew point70°
Tue, 2086° / 76°0.06
86 °
San Germán, Tuesday, 20 October
Light rain. High 86°, low 76°.
Pressure29.94 inHg
Wind9.6 mph S
Humidity65%
Visibility—
Dew point71°
Wed, 2186° / 76°0
86 °
San Germán, Wednesday, 21 October
Clear. High 86°, low 76°.
Pressure29.88 inHg
Wind12.8 mph S
Humidity64%
Visibility—
Dew point70°
Thu, 2285° / 77°0
85 °
San Germán, Thursday, 22 October
Light rain. High 85°, low 77°.
Pressure29.88 inHg
Wind14.5 mph S
Humidity69%
Visibility—
Dew point73°
Fri, 2381° / 78°0.41
81 °
San Germán, Friday, 23 October
Rain. High 81°, low 78°.
Pressure30.00 inHg
Wind14.7 mph S
Humidity79%
Visibility—
Dew point74°
Sat, 2483° / 75°0.69
83 °
San Germán, Saturday, 24 October
Rain. High 83°, low 75°.
Pressure29.97 inHg
Wind11 mph E
Humidity72%
Visibility—
Dew point72°
Sun, 2579° / 75°0.12
79 °
San Germán, Sunday, 25 October
Light rain. High 79°, low 75°.
Pressure30.00 inHg
Wind9.4 mph SE
Humidity85%
Visibility—
Dew point74°
Mon, 2685° / 75°0.02
85 °
San Germán, Monday, 26 October
Light rain. High 85°, low 75°.
Pressure29.91 inHg
Wind14.3 mph SE
Humidity69%
Visibility—
Dew point72°
Tue, 2785° / 77°0
85 °
San Germán, Tuesday, 27 October
Overcast. High 85°, low 77°.
Pressure29.97 inHg
Wind13.7 mph SE
Humidity66%
Visibility—
Dew point71°
Wed, 2887° / 76°0.01
87 °
San Germán, Wednesday, 28 October
Light rain. High 87°, low 76°.
Pressure29.97 inHg
Wind11.9 mph SE
Humidity61%
Visibility—
Dew point70°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2985° / 75°0.15
85 °
San Germán, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high85°
Average low75°
Average precipitation0.15 in
Chance of precipitation62%
Record high90° (2009)
Record low70° (2018)
Fri, 3085° / 74°0.15
85 °
San Germán, Friday, 30 October
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.15 in
Chance of precipitation63%
Record high89° (2009)
Record low69° (2018)
Sat, 3185° / 74°0.12
85 °
San Germán, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.12 in
Chance of precipitation48%
Record high90° (2009)
Record low69° (2019)
Sun, 0185° / 74°0.11
85 °
San Germán, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.11 in
Chance of precipitation58%
Record high90° (1982)
Record low69° (2019)
Mon, 0285° / 74°0.13
85 °
San Germán, Monday, 2 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.13 in
Chance of precipitation50%
Record high91° (1982)
Record low70° (2021)
Tue, 0385° / 74°0.14
85 °
San Germán, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.14 in
Chance of precipitation55%
Record high90° (1982)
Record low68° (2017)
Wed, 0485° / 74°0.12
85 °
San Germán, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.12 in
Chance of precipitation52%
Record high89° (1982)
Record low66° (2025)
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)
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.