Monthly outlook for San Antonio, PR: average high 84.5°, average low 77.6°. That is 0.9° above the climate normal for October. Precipitation is expected on 11 days (about 2.2 inches), against a normal of 11 days and 2.4 inches. The warmest day looks like 19 October (89.1°), the coolest 20 October (72.5°).
84.5°/77.6°
Average high / low
+0.9°
Above normal
11 / 11
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
85.3°
83.1°
+1.2°
29 October – 7 November
83.1°
82.5°
+0.3°
8 November – 17 November
at normal
81.8°
—
October records over 66 years
91.9°7 October 2023All-time high
70°25 October 2018All-time low
Climate normals and records are computed from the nearest reference point — Aceitunas (4 mi).
Tue, 2089° / 73°0.04
89 °
San Antonio, Tuesday, 20 October
Light rain. High 89°, low 73°.
Pressure29.88 inHg
Wind6.2 mph N
Humidity77%
Visibility6.2 mi
Dew point75°
Wed, 2184° / 79°0.01
84 °
San Antonio, Wednesday, 21 October
Light rain. High 84°, low 79°.
Pressure29.94 inHg
Wind6.5 mph N
Humidity81%
Visibility3.5 mi
Dew point75°
Thu, 2284° / 79°0.09
84 °
San Antonio, Thursday, 22 October
Light rain. High 84°, low 79°.
Pressure29.97 inHg
Wind4.9 mph SW
Humidity74%
Visibility4.1 mi
Dew point74°
Fri, 2384° / 80°0.11
84 °
San Antonio, Friday, 23 October
Light rain. High 84°, low 80°.
Pressure29.97 inHg
Wind7.3 mph E
Humidity72%
Visibility—
Dew point74°
Sat, 2485° / 80°0.15
85 °
San Antonio, Saturday, 24 October
Light rain. High 85°, low 80°.
Pressure29.94 inHg
Wind7 mph NE
Humidity75%
Visibility—
Dew point75°
Sun, 2586° / 78°0.33
86 °
San Antonio, Sunday, 25 October
Rain. High 86°, low 78°.
Pressure29.91 inHg
Wind15.6 mph SW
Humidity67%
Visibility—
Dew point72°
Mon, 2685° / 78°0.31
85 °
San Antonio, Monday, 26 October
Light rain. High 85°, low 78°.
Pressure29.94 inHg
Wind6.6 mph S
Humidity67%
Visibility—
Dew point72°
Tue, 2784° / 78°0.07
84 °
San Antonio, Tuesday, 27 October
Light rain. High 84°, low 78°.
Pressure29.97 inHg
Wind13.1 mph N
Humidity74%
Visibility—
Dew point74°
Wed, 2884° / 77°0
84 °
San Antonio, Wednesday, 28 October
Overcast. High 84°, low 77°.
Pressure29.94 inHg
Wind10.5 mph NE
Humidity71%
Visibility—
Dew point72°
Thu, 2984° / 77°0
84 °
San Antonio, Thursday, 29 October
Mostly clear. High 84°, low 77°.
Pressure29.91 inHg
Wind9.7 mph N
Humidity71%
Visibility—
Dew point73°
Fri, 3084° / 78°0
84 °
San Antonio, Friday, 30 October
Overcast. High 84°, low 78°.
Pressure29.88 inHg
Wind8.9 mph W
Humidity72%
Visibility—
Dew point73°
Sat, 3184° / 78°0.14
84 °
San Antonio, Saturday, 31 October
Light rain. High 84°, low 78°.
Pressure29.91 inHg
Wind12.1 mph SW
Humidity73%
Visibility—
Dew point73°
Sun, 0184° / 77°0.28
84 °
San Antonio, Sunday, 1 November
Light rain. High 84°, low 77°.
Pressure29.91 inHg
Wind12.8 mph SW
Humidity69%
Visibility—
Dew point72°
Mon, 0283° / 77°0.19
83 °
San Antonio, Monday, 2 November
Light rain. High 83°, low 77°.
Pressure29.88 inHg
Wind13.1 mph SW
Humidity72%
Visibility—
Dew point72°
Tue, 0381° / 76°0.32
81 °
San Antonio, Tuesday, 3 November
Rain. High 81°, low 76°.
Pressure29.88 inHg
Wind7.9 mph NW
Humidity73%
Visibility—
Dew point71°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0482° / 74°0.13
82 °
San Antonio, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.13 in
Chance of precipitation60%
Record high86° (2021)
Record low71° (2022)
Thu, 0582° / 74°0.15
82 °
San Antonio, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.15 in
Chance of precipitation67%
Record high87° (2021)
Record low71° (2022)
Fri, 0682° / 74°0.15
82 °
San Antonio, Friday, 6 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.15 in
Chance of precipitation65%
Record high87° (2021)
Record low71° (2022)
Sat, 0782° / 74°0.19
82 °
San Antonio, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.19 in
Chance of precipitation63%
Record high87° (2021)
Record low71° (2020)
Sun, 0882° / 74°0.14
82 °
San Antonio, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.14 in
Chance of precipitation67%
Record high87° (2021)
Record low70° (2021)
Mon, 0982° / 74°0.17
82 °
San Antonio, Monday, 9 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.17 in
Chance of precipitation68%
Record high86° (1962)
Record low71° (1966)
Tue, 1082° / 74°0.14
82 °
San Antonio, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.14 in
Chance of precipitation65%
Record high86° (2025)
Record low71° (1966)
Wed, 1182° / 74°0.12
82 °
San Antonio, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.12 in
Chance of precipitation55%
Record high86° (2021)
Record low70° (2000)
Thu, 1282° / 74°0.11
82 °
San Antonio, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.11 in
Chance of precipitation52%
Record high86° (2023)
Record low68° (1981)
Fri, 1382° / 74°0.1
82 °
San Antonio, Friday, 13 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.1 in
Chance of precipitation53%
Record high87° (2024)
Record low70° (1970)
Sat, 1482° / 74°0.1
82 °
San Antonio, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.1 in
Chance of precipitation52%
Record high87° (2023)
Record low71° (1961)
Sun, 1582° / 74°0.1
82 °
San Antonio, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.1 in
Chance of precipitation53%
Record high86° (2023)
Record low71° (2025)
Mon, 1682° / 74°0.08
82 °
San Antonio, Monday, 16 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.08 in
Chance of precipitation50%
Record high88° (2023)
Record low71° (1985)
Tue, 1782° / 74°0.09
82 °
San Antonio, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high82°
Average low74°
Average precipitation0.09 in
Chance of precipitation48%
Record high91° (2023)
Record low69° (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 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.