Monthly outlook for High Island, TX: average high 76.3°, average low 64.6°. That is 1.4° above the climate normal for October. Precipitation is expected on 4 days (about 2.5 inches), against a normal of 5 days and 2.5 inches. The warmest day looks like 22 October (84.9°), the coolest 6 November (52.8°).
76.3°/64.6°
Average high / low
+1.4°
Above normal
4 / 5
Wet days / normal
2.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
79.3°
74.9°
+2.5°
1 November – 10 November
71.1°
71.7°
-0.3°
11 November – 20 November
at normal
69°
—
October records over 66 years
89.8°2 October 2025All-time high
38.7°31 October 1993All-time low
Fri, 2384° / 58°0
84 °
High Island, Friday, 23 October
Clear. High 84°, low 58°.
Pressure30.15 inHg
Wind4.6 mph E
Humidity35%
Visibility6.2 mi
Dew point51°
Sat, 2482° / 61°0
82 °
High Island, Saturday, 24 October
Clear. High 82°, low 61°.
Pressure30.21 inHg
Wind10.8 mph E
Humidity53%
Visibility6.2 mi
Dew point61°
Sun, 2578° / 66°0
78 °
High Island, Sunday, 25 October
Overcast. High 78°, low 66°.
Pressure30.27 inHg
Wind9.5 mph E
Humidity38%
Visibility6.2 mi
Dew point50°
Mon, 2678° / 65°0
78 °
High Island, Monday, 26 October
Clear. High 78°, low 65°.
Pressure30.21 inHg
Wind8.7 mph E
Humidity49%
Visibility6.2 mi
Dew point56°
Tue, 2778° / 62°0
78 °
High Island, Tuesday, 27 October
Partly cloudy. High 78°, low 62°.
Pressure30.18 inHg
Wind8.4 mph E
Humidity57%
Visibility—
Dew point59°
Wed, 2878° / 71°0.01
78 °
High Island, Wednesday, 28 October
Light rain. High 78°, low 71°.
Pressure30.12 inHg
Wind11.4 mph SE
Humidity62%
Visibility—
Dew point63°
Thu, 2976° / 72°0
76 °
High Island, Thursday, 29 October
Overcast. High 76°, low 72°.
Pressure30.12 inHg
Wind17.4 mph E
Humidity72%
Visibility—
Dew point66°
Fri, 3075° / 72°0
75 °
High Island, Friday, 30 October
Overcast. High 75°, low 72°.
Pressure30.03 inHg
Wind15.5 mph E
Humidity79%
Visibility—
Dew point68°
Sat, 3179° / 74°0.04
79 °
High Island, Saturday, 31 October
Light rain. High 79°, low 74°.
Pressure29.91 inHg
Wind12.6 mph SE
Humidity78%
Visibility—
Dew point71°
Sun, 0179° / 74°0
79 °
High Island, Sunday, 1 November
Overcast. High 79°, low 74°.
Pressure29.94 inHg
Wind10.9 mph S
Humidity76%
Visibility—
Dew point70°
Mon, 0279° / 69°0.39
79 °
High Island, Monday, 2 November
Light rain. High 79°, low 69°.
Pressure29.91 inHg
Wind15.6 mph NE
Humidity83%
Visibility—
Dew point72°
Tue, 0368° / 67°1.37
68 °
High Island, Tuesday, 3 November
Rain. High 68°, low 67°.
Pressure29.97 inHg
Wind19.9 mph N
Humidity94%
Visibility—
Dew point66°
Wed, 0467° / 57°0.69
67 °
High Island, Wednesday, 4 November
Rain. High 67°, low 57°.
Pressure30.15 inHg
Wind18.4 mph N
Humidity86%
Visibility—
Dew point55°
Thu, 0568° / 54°0
68 °
High Island, Thursday, 5 November
Clear. High 68°, low 54°.
Pressure30.27 inHg
Wind14.1 mph N
Humidity51%
Visibility—
Dew point45°
Fri, 0667° / 53°0
67 °
High Island, Friday, 6 November
Clear. High 67°, low 53°.
Pressure30.21 inHg
Wind9.7 mph N
Humidity43%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0772° / 61°0.11
72 °
High Island, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high72°
Average low61°
Average precipitation0.11 in
Chance of precipitation30%
Record high83° (2024)
Record low41° (1993)
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)
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.