Monthly outlook for High Island, TX: average high 78.2°, average low 68.9°. That is 2.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.5 inches), against a normal of 5 days and 2.5 inches. The warmest day looks like 24 October (84.5°), the coolest 23 October (55.7°).
78.2°/68.9°
Average high / low
+2.6°
Above normal
3 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
78°
74.5°
+2°
2 November – 11 November
78.4°
71.5°
+3.8°
12 November – 21 November
at normal
68.7°
—
October records over 66 years
89.8°2 October 2025All-time high
38.7°31 October 1993All-time low
Sat, 2485° / 60°0
85 °
High Island, Saturday, 24 October
Partly cloudy. High 85°, low 60°.
Pressure30.21 inHg
Wind10.4 mph E
Humidity57%
Visibility6.2 mi
Dew point62°
Sun, 2577° / 60°0
77 °
High Island, Sunday, 25 October
Partly cloudy. High 77°, low 60°.
Pressure30.30 inHg
Wind9.1 mph E
Humidity41%
Visibility6.2 mi
Dew point50°
Mon, 2677° / 65°0
77 °
High Island, Monday, 26 October
Overcast. High 77°, low 65°.
Pressure30.24 inHg
Wind9.5 mph E
Humidity47%
Visibility6.2 mi
Dew point55°
Tue, 2777° / 62°0
77 °
High Island, Tuesday, 27 October
Mostly clear. High 77°, low 62°.
Pressure30.15 inHg
Wind7.1 mph E
Humidity62%
Visibility6.2 mi
Dew point61°
Wed, 2879° / 69°0.03
79 °
High Island, Wednesday, 28 October
Light rain. High 79°, low 69°.
Pressure30.12 inHg
Wind12.3 mph E
Humidity65%
Visibility—
Dew point65°
Thu, 2976° / 71°0.39
76 °
High Island, Thursday, 29 October
Light rain. High 76°, low 71°.
Pressure30.09 inHg
Wind15.3 mph E
Humidity85%
Visibility—
Dew point69°
Fri, 3075° / 73°0.79
75 °
High Island, Friday, 30 October
Rain. High 75°, low 73°.
Pressure29.97 inHg
Wind14.5 mph SE
Humidity83%
Visibility—
Dew point69°
Sat, 3175° / 71°0.26
75 °
High Island, Saturday, 31 October
Light rain. High 75°, low 71°.
Pressure29.97 inHg
Wind7.6 mph S
Humidity88%
Visibility—
Dew point68°
Sun, 0177° / 71°0.01
77 °
High Island, Sunday, 1 November
Light rain. High 77°, low 71°.
Pressure30.06 inHg
Wind7.9 mph SE
Humidity82%
Visibility—
Dew point70°
Mon, 0278° / 73°0
78 °
High Island, Monday, 2 November
Light rain. High 78°, low 73°.
Pressure30.00 inHg
Wind9.4 mph S
Humidity79%
Visibility—
Dew point70°
Tue, 0378° / 74°0.01
78 °
High Island, Tuesday, 3 November
Light rain. High 78°, low 74°.
Pressure29.88 inHg
Wind12.5 mph S
Humidity82%
Visibility—
Dew point72°
Wed, 0478° / 76°0
78 °
High Island, Wednesday, 4 November
Light rain. High 78°, low 76°.
Pressure29.88 inHg
Wind13 mph S
Humidity83%
Visibility—
Dew point73°
Thu, 0578° / 75°0.02
78 °
High Island, Thursday, 5 November
Light rain. High 78°, low 75°.
Pressure30.03 inHg
Wind12.3 mph S
Humidity86%
Visibility—
Dew point73°
Fri, 0679° / 74°0
79 °
High Island, Friday, 6 November
Mostly clear. High 79°, low 74°.
Pressure30.06 inHg
Wind10.2 mph S
Humidity83%
Visibility—
Dew point73°
Sat, 0779° / 74°0
79 °
High Island, Saturday, 7 November
Mostly clear. High 79°, low 74°.
Pressure30.03 inHg
Wind11.1 mph SW
Humidity81%
Visibility—
Dew point72°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0872° / 61°0.08
72 °
High Island, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high72°
Average low61°
Average precipitation0.08 in
Chance of precipitation35%
Record high81° (1989)
Record low46° (1991)
Mon, 0972° / 61°0.13
72 °
High Island, Monday, 9 November
Climate normal for this date — 60-year average.
Average high72°
Average low61°
Average precipitation0.13 in
Chance of precipitation28%
Record high80° (1994)
Record low38° (1991)
Tue, 1071° / 60°0.08
71 °
High Island, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high71°
Average low60°
Average precipitation0.08 in
Chance of precipitation25%
Record high81° (2024)
Record low41° (1991)
Wed, 1171° / 59°0.09
71 °
High Island, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high71°
Average low59°
Average precipitation0.09 in
Chance of precipitation27%
Record high80° (2020)
Record low44° (1991)
Thu, 1270° / 58°0.12
70 °
High Island, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high70°
Average low58°
Average precipitation0.12 in
Chance of precipitation28%
Record high79° (2003)
Record low37° (2019)
Fri, 1368° / 57°0.14
68 °
High Island, Friday, 13 November
Climate normal for this date — 60-year average.
Average high68°
Average low57°
Average precipitation0.14 in
Chance of precipitation22%
Record high79° (2005)
Record low31° (2019)
Sat, 1469° / 58°0.09
69 °
High Island, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high69°
Average low58°
Average precipitation0.09 in
Chance of precipitation22%
Record high79° (2007)
Record low36° (2018)
Sun, 1569° / 58°0.09
69 °
High Island, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high69°
Average low58°
Average precipitation0.09 in
Chance of precipitation32%
Record high79° (1999)
Record low34° (2018)
Mon, 1669° / 58°0.17
69 °
High Island, Monday, 16 November
Climate normal for this date — 60-year average.
Average high69°
Average low58°
Average precipitation0.17 in
Chance of precipitation27%
Record high81° (2011)
Record low37° (1970)
Tue, 1769° / 58°0.13
69 °
High Island, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high69°
Average low58°
Average precipitation0.13 in
Chance of precipitation35%
Record high81° (2024)
Record low39° (2014)
Wed, 1869° / 60°0.3
69 °
High Island, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high69°
Average low60°
Average precipitation0.3 in
Chance of precipitation33%
Record high80° (2024)
Record low39° (2014)
Thu, 1969° / 58°0.13
69 °
High Island, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high69°
Average low58°
Average precipitation0.13 in
Chance of precipitation25%
Record high79° (2025)
Record low42° (2014)
Fri, 2068° / 57°0.13
68 °
High Island, Friday, 20 November
Climate normal for this date — 60-year average.
Average high68°
Average low57°
Average precipitation0.13 in
Chance of precipitation35%
Record high79° (2025)
Record low41° (1969)
Sat, 2168° / 57°0.12
68 °
High Island, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high68°
Average low57°
Average precipitation0.12 in
Chance of precipitation25%
Record high79° (2025)
Record low41° (1969)
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 High Island, 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 High Island, 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.