Monthly outlook for Sinton, TX: average high 84.5°, average low 70.8°. That is 1.7° above the climate normal for October. Precipitation is expected on 5 days (about 2.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 12 October (94.2°), the coolest 18 October (56.3°).
84.5°/70.8°
Average high / low
+1.7°
Above normal
5 / 5
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
86.9°
82.3°
+2.6°
21 October – 30 October
80.5°
79.6°
+0.5°
31 October – 9 November
at normal
76.7°
—
October records over 66 years
95.5°28 October 2025All-time high
37.4°31 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Loma Linda (2 mi).
Mon, 1294° / 76°0.03
94 °
Sinton, Monday, 12 October
Light rain. High 94°, low 76°.
Pressure29.97 inHg
Wind11.2 mph SE
Humidity56%
Visibility6.2 mi
Dew point73°
Tue, 1393° / 79°0
93 °
Sinton, Tuesday, 13 October
Light rain. High 93°, low 79°.
Pressure29.94 inHg
Wind12.5 mph S
Humidity59%
Visibility6.2 mi
Dew point75°
Wed, 1491° / 80°0.07
91 °
Sinton, Wednesday, 14 October
Light rain. High 91°, low 80°.
Pressure29.94 inHg
Wind14.3 mph SE
Humidity62%
Visibility6.2 mi
Dew point76°
Thu, 1589° / 78°0
89 °
Sinton, Thursday, 15 October
Clear. High 89°, low 78°.
Pressure29.94 inHg
Wind13 mph SE
Humidity52%
Visibility6.2 mi
Dew point68°
Fri, 1690° / 74°0
90 °
Sinton, Friday, 16 October
Mostly clear. High 90°, low 74°.
Pressure30.06 inHg
Wind11.9 mph E
Humidity38%
Visibility—
Dew point59°
Sat, 1776° / 63°0
76 °
Sinton, Saturday, 17 October
Partly cloudy. High 76°, low 63°.
Pressure30.30 inHg
Wind18.5 mph N
Humidity37%
Visibility—
Dew point45°
Sun, 1876° / 56°0
76 °
Sinton, Sunday, 18 October
Overcast. High 76°, low 56°.
Pressure30.33 inHg
Wind10.3 mph NE
Humidity25%
Visibility—
Dew point32°
Mon, 1985° / 62°0
85 °
Sinton, Monday, 19 October
Clear. High 85°, low 62°.
Pressure30.18 inHg
Wind11.1 mph E
Humidity57%
Visibility—
Dew point61°
Tue, 2086° / 72°0.27
86 °
Sinton, Tuesday, 20 October
Light rain. High 86°, low 72°.
Pressure30.03 inHg
Wind14.8 mph SE
Humidity56%
Visibility—
Dew point66°
Wed, 2184° / 74°1.07
84 °
Sinton, Wednesday, 21 October
Rain. High 84°, low 74°.
Pressure30.00 inHg
Wind13.4 mph SE
Humidity67%
Visibility—
Dew point71°
Thu, 2285° / 75°0.39
85 °
Sinton, Thursday, 22 October
Rain. High 85°, low 75°.
Pressure30.03 inHg
Wind15.7 mph SE
Humidity61%
Visibility—
Dew point69°
Fri, 2384° / 76°0.26
84 °
Sinton, Friday, 23 October
Light rain. High 84°, low 76°.
Pressure30.03 inHg
Wind14.9 mph SE
Humidity62%
Visibility—
Dew point68°
Sat, 2485° / 74°0.02
85 °
Sinton, Saturday, 24 October
Light rain. High 85°, low 74°.
Pressure29.94 inHg
Wind11.6 mph SE
Humidity60%
Visibility—
Dew point67°
Sun, 2578° / 63°0.02
78 °
Sinton, Sunday, 25 October
Light rain. High 78°, low 63°.
Pressure30.00 inHg
Wind17.3 mph N
Humidity57%
Visibility—
Dew point57°
Mon, 2667° / 56°0
67 °
Sinton, Monday, 26 October
Overcast. High 67°, low 56°.
Pressure30.15 inHg
Wind14.3 mph N
Humidity58%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2779° / 65°0.09
79 °
Sinton, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (2025)
Record low48° (1981)
Wed, 2879° / 64°0.05
79 °
Sinton, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.05 in
Chance of precipitation23%
Record high96° (2025)
Record low46° (2020)
Thu, 2979° / 64°0.09
79 °
Sinton, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.09 in
Chance of precipitation25%
Record high87° (2004)
Record low42° (2017)
Fri, 3079° / 63°0.13
79 °
Sinton, Friday, 30 October
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.13 in
Chance of precipitation28%
Record high88° (2024)
Record low43° (1993)
Sat, 3178° / 64°0.13
78 °
Sinton, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.13 in
Chance of precipitation32%
Record high86° (1997)
Record low37° (1993)
Sun, 0178° / 63°0.11
78 °
Sinton, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.11 in
Chance of precipitation33%
Record high88° (2010)
Record low43° (2019)
Mon, 0276° / 61°0.13
76 °
Sinton, Monday, 2 November
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.13 in
Chance of precipitation23%
Record high87° (2017)
Record low46° (1966)
Tue, 0376° / 61°0.09
76 °
Sinton, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.09 in
Chance of precipitation28%
Record high88° (1992)
Record low43° (1991)
Wed, 0476° / 61°0.09
76 °
Sinton, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high76°
Average low61°
Average precipitation0.09 in
Chance of precipitation25%
Record high93° (1988)
Record low40° (1991)
Thu, 0577° / 61°0.04
77 °
Sinton, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.04 in
Chance of precipitation22%
Record high89° (2017)
Record low42° (1970)
Fri, 0677° / 62°0.09
77 °
Sinton, Friday, 6 November
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.09 in
Chance of precipitation23%
Record high89° (1963)
Record low45° (1970)
Sat, 0776° / 62°0.06
76 °
Sinton, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.06 in
Chance of precipitation18%
Record high89° (2025)
Record low42° (1993)
Sun, 0876° / 62°0.06
76 °
Sinton, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high76°
Average low62°
Average precipitation0.06 in
Chance of precipitation27%
Record high90° (2025)
Record low46° (1991)
Mon, 0976° / 63°0.04
76 °
Sinton, Monday, 9 November
Climate normal for this date — 60-year average.
Average high76°
Average low63°
Average precipitation0.04 in
Chance of precipitation17%
Record high87° (1988)
Record low40° (1991)
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 Sinton, TX 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 Sinton, TX 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.