Monthly outlook for San Leon, TX: average high 80.6°, average low 72.3°. That is 1.4° above the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 9 October (88.9°), the coolest 18 October (57.7°).
80.6°/72.3°
Average high / low
+1.4°
Above normal
5 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
82.7°
78.9°
+2.1°
19 October – 28 October
77°
76.2°
+0.5°
29 October – 7 November
at normal
73.3°
—
October records over 66 years
91.9°14 October 2024All-time high
37.6°31 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Texas City (6 mi).
Sat, 1087° / 74°0
87 °
San Leon, Saturday, 10 October
Clear. High 87°, low 74°.
Pressure30.00 inHg
Wind0.9 mph SW
Humidity44%
Visibility6.2 mi
Dew point60°
Sun, 1185° / 78°0
85 °
San Leon, Sunday, 11 October
Partly cloudy. High 85°, low 78°.
Pressure30.09 inHg
Wind9.9 mph SE
Humidity53%
Visibility6.2 mi
Dew point66°
Mon, 1285° / 81°0.01
85 °
San Leon, Monday, 12 October
Light rain. High 85°, low 81°.
Pressure30.03 inHg
Wind12.8 mph SE
Humidity71%
Visibility6.2 mi
Dew point75°
Tue, 1386° / 81°0.04
86 °
San Leon, Tuesday, 13 October
Light rain. High 86°, low 81°.
Pressure30.00 inHg
Wind11.4 mph S
Humidity75%
Visibility6.2 mi
Dew point77°
Wed, 1485° / 82°0.01
85 °
San Leon, Wednesday, 14 October
Light rain. High 85°, low 82°.
Pressure29.97 inHg
Wind14.9 mph SE
Humidity77%
Visibility—
Dew point76°
Thu, 1584° / 77°0
84 °
San Leon, Thursday, 15 October
Clear. High 84°, low 77°.
Pressure30.00 inHg
Wind12.4 mph SE
Humidity60%
Visibility—
Dew point68°
Fri, 1685° / 75°0.06
85 °
San Leon, Friday, 16 October
Light rain. High 85°, low 75°.
Pressure30.06 inHg
Wind15.8 mph N
Humidity56%
Visibility—
Dew point67°
Sat, 1774° / 65°0
74 °
San Leon, Saturday, 17 October
Overcast. High 74°, low 65°.
Pressure30.30 inHg
Wind23.4 mph N
Humidity28%
Visibility—
Dew point35°
Sun, 1867° / 58°0
67 °
San Leon, Sunday, 18 October
Overcast. High 67°, low 58°.
Pressure30.27 inHg
Wind18.3 mph NE
Humidity33%
Visibility—
Dew point33°
Mon, 1972° / 61°0
72 °
San Leon, Monday, 19 October
Partly cloudy. High 72°, low 61°.
Pressure30.18 inHg
Wind10.8 mph NE
Humidity35%
Visibility—
Dew point40°
Tue, 2074° / 69°0.22
74 °
San Leon, Tuesday, 20 October
Light rain. High 74°, low 69°.
Pressure30.12 inHg
Wind18.6 mph E
Humidity80%
Visibility—
Dew point66°
Wed, 2177° / 74°0.44
77 °
San Leon, Wednesday, 21 October
Rain. High 77°, low 74°.
Pressure30.09 inHg
Wind14.9 mph E
Humidity76%
Visibility—
Dew point69°
Thu, 2281° / 72°0.04
81 °
San Leon, Thursday, 22 October
Light rain. High 81°, low 72°.
Pressure30.00 inHg
Wind10.7 mph NE
Humidity65%
Visibility—
Dew point66°
Fri, 2384° / 71°0.05
84 °
San Leon, Friday, 23 October
Light rain. High 84°, low 71°.
Pressure30.03 inHg
Wind15.2 mph N
Humidity46%
Visibility—
Dew point58°
Sat, 2475° / 63°0
75 °
San Leon, Saturday, 24 October
Clear. High 75°, low 63°.
Pressure30.24 inHg
Wind16.9 mph N
Humidity28%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2576° / 64°0.34
76 °
San Leon, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.34 in
Chance of precipitation27%
Record high84° (2010)
Record low50° (1980)
Mon, 2676° / 64°0.2
76 °
San Leon, Monday, 26 October
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.2 in
Chance of precipitation32%
Record high86° (2010)
Record low49° (2019)
Tue, 2775° / 64°0.11
75 °
San Leon, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high75°
Average low64°
Average precipitation0.11 in
Chance of precipitation27%
Record high85° (2010)
Record low48° (1997)
Wed, 2875° / 63°0.17
75 °
San Leon, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high75°
Average low63°
Average precipitation0.17 in
Chance of precipitation32%
Record high86° (1963)
Record low47° (2017)
Thu, 2975° / 63°0.13
75 °
San Leon, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high75°
Average low63°
Average precipitation0.13 in
Chance of precipitation30%
Record high83° (2024)
Record low44° (2017)
Fri, 3075° / 63°0.2
75 °
San Leon, Friday, 30 October
Climate normal for this date — 60-year average.
Average high75°
Average low63°
Average precipitation0.2 in
Chance of precipitation35%
Record high83° (2004)
Record low45° (1993)
Sat, 3174° / 63°0.15
74 °
San Leon, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high74°
Average low63°
Average precipitation0.15 in
Chance of precipitation30%
Record high83° (2004)
Record low38° (1993)
Sun, 0173° / 62°0.22
73 °
San Leon, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high73°
Average low62°
Average precipitation0.22 in
Chance of precipitation38%
Record high82° (1978)
Record low40° (1993)
Mon, 0272° / 61°0.2
72 °
San Leon, Monday, 2 November
Climate normal for this date — 60-year average.
Average high72°
Average low61°
Average precipitation0.2 in
Chance of precipitation27%
Record high82° (1971)
Record low43° (1966)
Tue, 0372° / 60°0.07
72 °
San Leon, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high72°
Average low60°
Average precipitation0.07 in
Chance of precipitation27%
Record high81° (1994)
Record low41° (1966)
Wed, 0473° / 60°0.07
73 °
San Leon, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high73°
Average low60°
Average precipitation0.07 in
Chance of precipitation25%
Record high85° (1988)
Record low37° (1991)
Thu, 0573° / 60°0.1
73 °
San Leon, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high73°
Average low60°
Average precipitation0.1 in
Chance of precipitation23%
Record high82° (1987)
Record low43° (1970)
Fri, 0673° / 61°0.11
73 °
San Leon, Friday, 6 November
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.11 in
Chance of precipitation27%
Record high83° (2017)
Record low45° (1970)
Sat, 0773° / 61°0.11
73 °
San Leon, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high73°
Average low61°
Average precipitation0.11 in
Chance of precipitation32%
Record high82° (1969)
Record low40° (1993)
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 Leon, 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 San Leon, 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.