Monthly outlook for Katy, TX: average high 83.6°, average low 68.5°. That is 1.7° above the climate normal for October. Precipitation is expected on 7 days (about 1.9 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 10 October (94.5°), the coolest 20 October (58.7°).
83.6°/68.5°
Average high / low
+1.7°
Above normal
7 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
89.3°
81.5°
+4.3°
19 October – 28 October
74.1°
78.2°
-2.3°
29 October – 7 November
at normal
74.6°
—
October records over 66 years
96.8°14 October 2024All-time high
34.3°31 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Fulshear (7 mi).
Sat, 1095° / 68°0
95 °
Katy, Saturday, 10 October
Clear. High 95°, low 68°.
Pressure29.97 inHg
Wind5.5 mph S
Humidity33%
Visibility6.2 mi
Dew point58°
Sun, 1193° / 71°0
93 °
Katy, Sunday, 11 October
Clear. High 93°, low 71°.
Pressure30.03 inHg
Wind8.9 mph S
Humidity36%
Visibility6.2 mi
Dew point60°
Mon, 1291° / 75°0.1
91 °
Katy, Monday, 12 October
Light rain. High 91°, low 75°.
Pressure30.00 inHg
Wind9.6 mph SE
Humidity51%
Visibility6.2 mi
Dew point69°
Tue, 1393° / 78°0.14
93 °
Katy, Tuesday, 13 October
Light rain. High 93°, low 78°.
Pressure29.94 inHg
Wind11.3 mph SE
Humidity54%
Visibility—
Dew point72°
Wed, 1490° / 76°0.02
90 °
Katy, Wednesday, 14 October
Light rain. High 90°, low 76°.
Pressure29.91 inHg
Wind12.5 mph S
Humidity60%
Visibility—
Dew point73°
Thu, 1589° / 72°0
89 °
Katy, Thursday, 15 October
Clear. High 89°, low 72°.
Pressure29.94 inHg
Wind13 mph SE
Humidity43%
Visibility—
Dew point60°
Fri, 1688° / 73°0
88 °
Katy, Friday, 16 October
Partly cloudy. High 88°, low 73°.
Pressure29.94 inHg
Wind12.4 mph E
Humidity41%
Visibility—
Dew point59°
Sat, 1787° / 73°0.04
87 °
Katy, Saturday, 17 October
Light rain. High 87°, low 73°.
Pressure30.00 inHg
Wind13.4 mph E
Humidity51%
Visibility—
Dew point63°
Sun, 1874° / 65°0.08
74 °
Katy, Sunday, 18 October
Light rain. High 74°, low 65°.
Pressure30.09 inHg
Wind15.1 mph NE
Humidity57%
Visibility—
Dew point55°
Mon, 1964° / 59°1.03
64 °
Katy, Monday, 19 October
Rain. High 64°, low 59°.
Pressure30.15 inHg
Wind13.2 mph N
Humidity90%
Visibility—
Dew point59°
Tue, 2067° / 59°0.41
67 °
Katy, Tuesday, 20 October
Rain. High 67°, low 59°.
Pressure30.12 inHg
Wind10.1 mph N
Humidity87%
Visibility—
Dew point62°
Wed, 2178° / 63°0.04
78 °
Katy, Wednesday, 21 October
Light rain. High 78°, low 63°.
Pressure30.06 inHg
Wind10.1 mph NE
Humidity79%
Visibility—
Dew point67°
Thu, 2276° / 70°0
76 °
Katy, Thursday, 22 October
Overcast. High 76°, low 70°.
Pressure30.03 inHg
Wind12.7 mph NE
Humidity75%
Visibility—
Dew point66°
Fri, 2383° / 66°0
83 °
Katy, Friday, 23 October
Clear. High 83°, low 66°.
Pressure30.12 inHg
Wind12.4 mph N
Humidity54%
Visibility—
Dew point60°
Sat, 2476° / 63°0
76 °
Katy, Saturday, 24 October
Clear. High 76°, low 63°.
Pressure30.21 inHg
Wind10 mph E
Humidity37%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2578° / 61°0.25
78 °
Katy, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.25 in
Chance of precipitation32%
Record high89° (2024)
Record low44° (1980)
Mon, 2678° / 60°0.12
78 °
Katy, Monday, 26 October
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.12 in
Chance of precipitation28%
Record high89° (2024)
Record low44° (2007)
Tue, 2777° / 60°0.08
77 °
Katy, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.08 in
Chance of precipitation23%
Record high91° (2010)
Record low44° (1981)
Wed, 2876° / 59°0.15
76 °
Katy, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.15 in
Chance of precipitation25%
Record high88° (2024)
Record low44° (2017)
Thu, 2977° / 59°0.11
77 °
Katy, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.11 in
Chance of precipitation33%
Record high88° (2024)
Record low38° (2017)
Fri, 3076° / 59°0.15
76 °
Katy, Friday, 30 October
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.15 in
Chance of precipitation35%
Record high86° (2004)
Record low41° (1993)
Sat, 3176° / 59°0.19
76 °
Katy, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high76°
Average low59°
Average precipitation0.19 in
Chance of precipitation28%
Record high85° (1992)
Record low34° (1993)
Sun, 0175° / 58°0.14
75 °
Katy, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.14 in
Chance of precipitation30%
Record high87° (2010)
Record low35° (2019)
Mon, 0274° / 57°0.1
74 °
Katy, Monday, 2 November
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.1 in
Chance of precipitation23%
Record high86° (2016)
Record low40° (1991)
Tue, 0373° / 56°0.09
73 °
Katy, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.09 in
Chance of precipitation35%
Record high85° (1988)
Record low35° (1966)
Wed, 0474° / 56°0.12
74 °
Katy, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.12 in
Chance of precipitation25%
Record high89° (1988)
Record low33° (1991)
Thu, 0574° / 56°0.08
74 °
Katy, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.08 in
Chance of precipitation27%
Record high85° (2005)
Record low36° (1991)
Fri, 0674° / 57°0.11
74 °
Katy, Friday, 6 November
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.11 in
Chance of precipitation23%
Record high85° (2005)
Record low40° (1992)
Sat, 0774° / 57°0.08
74 °
Katy, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.08 in
Chance of precipitation27%
Record high86° (2023)
Record low35° (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 Katy, 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 Katy, 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.