Monthly outlook for High Island, TX: average high 74.8°, average low 66.6°. That is 1.5° above the climate normal for October. Precipitation is expected on 5 days (about 3.5 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 1 November (80.4°), the coolest 12 November (58.5°).
74.8°/66.6°
Average high / low
+1.5°
Above normal
5 / 5
Wet days / normal
3.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
28 October – 6 November
76.5°
72.8°
+2°
7 November – 16 November
72.1°
70.1°
+1.1°
17 November – 26 November
at normal
68.1°
—
October records over 66 years
89.8°2 October 2025All-time high
38.7°31 October 1993All-time low
Thu, 2978° / 68°0
78 °
High Island, Thursday, 29 October
Overcast. High 78°, low 68°.
Pressure30.15 inHg
Wind9.1 mph E
Humidity60%
Visibility6.2 mi
Dew point62°
Fri, 3076° / 65°0.02
76 °
High Island, Friday, 30 October
Light rain. High 76°, low 65°.
Pressure30.09 inHg
Wind11.5 mph E
Humidity63%
Visibility6.2 mi
Dew point63°
Sat, 3179° / 70°0.04
79 °
High Island, Saturday, 31 October
Light rain. High 79°, low 70°.
Pressure30.12 inHg
Wind12 mph E
Humidity77%
Visibility6.2 mi
Dew point71°
Sun, 0180° / 71°0.03
80 °
High Island, Sunday, 1 November
Light rain. High 80°, low 71°.
Pressure30.15 inHg
Wind7.5 mph E
Humidity76%
Visibility6.2 mi
Dew point71°
Mon, 0279° / 71°0.06
79 °
High Island, Monday, 2 November
Light rain. High 79°, low 71°.
Pressure30.03 inHg
Wind13.5 mph SE
Humidity75%
Visibility—
Dew point70°
Tue, 0377° / 68°1.85
77 °
High Island, Tuesday, 3 November
Heavy rain. High 77°, low 68°.
Pressure29.71 inHg
Wind18.3 mph SW
Humidity82%
Visibility—
Dew point71°
Wed, 0472° / 63°0
72 °
High Island, Wednesday, 4 November
Clear. High 72°, low 63°.
Pressure29.68 inHg
Wind20.1 mph W
Humidity54%
Visibility—
Dew point51°
Thu, 0573° / 62°0
73 °
High Island, Thursday, 5 November
Clear. High 73°, low 62°.
Pressure29.85 inHg
Wind17.9 mph NW
Humidity61%
Visibility—
Dew point54°
Fri, 0672° / 61°0
72 °
High Island, Friday, 6 November
Clear. High 72°, low 61°.
Pressure29.97 inHg
Wind7.2 mph N
Humidity55%
Visibility—
Dew point53°
Sat, 0774° / 68°0
74 °
High Island, Saturday, 7 November
Overcast. High 74°, low 68°.
Pressure30.03 inHg
Wind13 mph SE
Humidity62%
Visibility—
Dew point59°
Sun, 0875° / 72°0.11
75 °
High Island, Sunday, 8 November
Light rain. High 75°, low 72°.
Pressure29.97 inHg
Wind18.9 mph SE
Humidity79%
Visibility—
Dew point68°
Mon, 0977° / 73°0.39
77 °
High Island, Monday, 9 November
Rain. High 77°, low 73°.
Pressure29.85 inHg
Wind18.8 mph SE
Humidity84%
Visibility—
Dew point71°
Tue, 1075° / 67°1.06
75 °
High Island, Tuesday, 10 November
Rain. High 75°, low 67°.
Pressure29.88 inHg
Wind14.2 mph N
Humidity85%
Visibility—
Dew point69°
Wed, 1169° / 61°0
69 °
High Island, Wednesday, 11 November
Overcast. High 69°, low 61°.
Pressure30.06 inHg
Wind14.6 mph NE
Humidity56%
Visibility—
Dew point50°
Thu, 1263° / 59°0
63 °
High Island, Thursday, 12 November
Overcast. High 63°, low 59°.
Pressure30.12 inHg
Wind13.5 mph NE
Humidity68%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 2268° / 57°0.12
68 °
High Island, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high68°
Average low57°
Average precipitation0.12 in
Chance of precipitation28%
Record high80° (2025)
Record low40° (1984)
Mon, 2368° / 56°0.18
68 °
High Island, Monday, 23 November
Climate normal for this date — 60-year average.
Average high68°
Average low56°
Average precipitation0.18 in
Chance of precipitation43%
Record high77° (2003)
Record low39° (1975)
Tue, 2467° / 56°0.16
67 °
High Island, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high67°
Average low56°
Average precipitation0.16 in
Chance of precipitation30%
Record high79° (1967)
Record low35° (1970)
Wed, 2567° / 56°0.17
67 °
High Island, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high67°
Average low56°
Average precipitation0.17 in
Chance of precipitation37%
Record high83° (2025)
Record low41° (1991)
Thu, 2668° / 57°0.19
68 °
High Island, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high68°
Average low57°
Average precipitation0.19 in
Chance of precipitation38%
Record high78° (1988)
Record low40° (2013)
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.