Monthly outlook for San Antonio, PR: average high 86.5°, average low 76.7°. That is 0.2° above the climate normal for October. Precipitation is expected on 10 days (about 4.0 inches), against a normal of 11 days and 2.4 inches. The warmest day looks like 22 October (91.6°), the coolest 18 October (73.1°).
86.5°/76.7°
Average high / low
+0.2°
Above normal
10 / 11
Wet days / normal
4.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
87.8°
86.4°
+0.8°
25 October – 3 November
84.3°
85.6°
-0.7°
4 November – 13 November
at normal
84.5°
—
October records over 66 years
95.2°10 October 2024All-time high
71.2°30 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Campanilla (4 mi).
Fri, 1688° / 77°0.02
88 °
San Antonio, Friday, 16 October
Light rain. High 88°, low 77°.
Pressure29.94 inHg
Wind12.5 mph E
Humidity69%
Visibility6.2 mi
Dew point75°
Sat, 1785° / 75°0.07
85 °
San Antonio, Saturday, 17 October
Light rain. High 85°, low 75°.
Pressure29.94 inHg
Wind11.3 mph E
Humidity72%
Visibility6.2 mi
Dew point75°
Sun, 1885° / 73°0.05
85 °
San Antonio, Sunday, 18 October
Light rain. High 85°, low 73°.
Pressure29.94 inHg
Wind8 mph NE
Humidity74%
Visibility6.2 mi
Dew point76°
Mon, 1986° / 75°0.11
86 °
San Antonio, Monday, 19 October
Light rain. High 86°, low 75°.
Pressure29.91 inHg
Wind9.5 mph E
Humidity70%
Visibility—
Dew point74°
Tue, 2087° / 75°0.1
87 °
San Antonio, Tuesday, 20 October
Light rain. High 87°, low 75°.
Pressure29.91 inHg
Wind10.3 mph NE
Humidity67%
Visibility—
Dew point73°
Wed, 2188° / 75°0.03
88 °
San Antonio, Wednesday, 21 October
Light rain. High 88°, low 75°.
Pressure29.88 inHg
Wind7.9 mph N
Humidity56%
Visibility—
Dew point68°
Thu, 2292° / 77°0.04
92 °
San Antonio, Thursday, 22 October
Light rain. High 92°, low 77°.
Pressure29.91 inHg
Wind8.5 mph E
Humidity57%
Visibility—
Dew point71°
Fri, 2391° / 79°0
91 °
San Antonio, Friday, 23 October
Overcast. High 91°, low 79°.
Pressure29.94 inHg
Wind11.1 mph S
Humidity52%
Visibility—
Dew point69°
Sat, 2488° / 80°0
88 °
San Antonio, Saturday, 24 October
Overcast. High 88°, low 80°.
Pressure29.85 inHg
Wind14.2 mph S
Humidity73%
Visibility—
Dew point73°
Sun, 2588° / 78°0.25
88 °
San Antonio, Sunday, 25 October
Rain. High 88°, low 78°.
Pressure29.85 inHg
Wind12.3 mph NW
Humidity64%
Visibility—
Dew point73°
Mon, 2685° / 77°0.45
85 °
San Antonio, Monday, 26 October
Rain. High 85°, low 77°.
Pressure29.94 inHg
Wind7.6 mph NE
Humidity67%
Visibility—
Dew point72°
Tue, 2782° / 77°1.13
82 °
San Antonio, Tuesday, 27 October
Rain. High 82°, low 77°.
Pressure30.00 inHg
Wind10.2 mph NE
Humidity80%
Visibility—
Dew point75°
Wed, 2881° / 77°1.23
81 °
San Antonio, Wednesday, 28 October
Rain. High 81°, low 77°.
Pressure29.97 inHg
Wind13.3 mph E
Humidity84%
Visibility—
Dew point75°
Thu, 2985° / 77°0.27
85 °
San Antonio, Thursday, 29 October
Light rain. High 85°, low 77°.
Pressure29.97 inHg
Wind13.3 mph NE
Humidity76%
Visibility—
Dew point74°
Fri, 3085° / 76°0.24
85 °
San Antonio, Friday, 30 October
Light rain. High 85°, low 76°.
Pressure29.94 inHg
Wind12.4 mph E
Humidity69%
Visibility—
Dew point73°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3185° / 75°0.2
85 °
San Antonio, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high85°
Average low75°
Average precipitation0.2 in
Chance of precipitation77%
Record high90° (2025)
Record low72° (1983)
Sun, 0185° / 75°0.17
85 °
San Antonio, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high85°
Average low75°
Average precipitation0.17 in
Chance of precipitation65%
Record high92° (1960)
Record low70° (1976)
Mon, 0285° / 74°0.14
85 °
San Antonio, Monday, 2 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.14 in
Chance of precipitation68%
Record high93° (1960)
Record low71° (1976)
Tue, 0385° / 74°0.13
85 °
San Antonio, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.13 in
Chance of precipitation77%
Record high93° (1960)
Record low71° (1974)
Wed, 0485° / 74°0.14
85 °
San Antonio, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.14 in
Chance of precipitation72%
Record high90° (1964)
Record low71° (2000)
Thu, 0585° / 74°0.13
85 °
San Antonio, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.13 in
Chance of precipitation63%
Record high91° (1960)
Record low72° (1994)
Fri, 0685° / 74°0.17
85 °
San Antonio, Friday, 6 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.17 in
Chance of precipitation62%
Record high91° (1960)
Record low72° (2018)
Sat, 0785° / 74°0.21
85 °
San Antonio, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.21 in
Chance of precipitation62%
Record high89° (2025)
Record low72° (1971)
Sun, 0885° / 74°0.18
85 °
San Antonio, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high85°
Average low74°
Average precipitation0.18 in
Chance of precipitation68%
Record high90° (2025)
Record low72° (1975)
Mon, 0984° / 74°0.2
84 °
San Antonio, Monday, 9 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.2 in
Chance of precipitation67%
Record high89° (2025)
Record low71° (1996)
Tue, 1084° / 74°0.13
84 °
San Antonio, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.13 in
Chance of precipitation67%
Record high90° (2025)
Record low70° (1966)
Wed, 1184° / 74°0.15
84 °
San Antonio, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.15 in
Chance of precipitation60%
Record high89° (2019)
Record low69° (2000)
Thu, 1284° / 74°0.15
84 °
San Antonio, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.15 in
Chance of precipitation62%
Record high88° (1963)
Record low69° (1966)
Fri, 1384° / 74°0.13
84 °
San Antonio, Friday, 13 November
Climate normal for this date — 60-year average.
Average high84°
Average low74°
Average precipitation0.13 in
Chance of precipitation68%
Record high89° (2009)
Record low71° (1982)
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 Antonio, 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 Antonio, 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.