Monthly outlook for Grimes, TX: average high 77.6°, average low 60.2°. That is 1.3° above the climate normal for October. Precipitation is expected on 5 days (about 0.4 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 14 October (92.7°), the coolest 17 October (47.8°).
77.6°/60.2°
Average high / low
+1.3°
Above normal
5 / 3
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
79.1°
76.6°
+1.4°
22 October – 31 October
75.2°
72.4°
+1.5°
1 November – 10 November
at normal
68.7°
—
October records over 66 years
100.2°8 October 1979All-time high
22.3°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Sweetwater (13 mi).
Tue, 1392° / 72°0.06
92 °
Grimes, Tuesday, 13 October
Rain. High 92°, low 72°.
Pressure29.91 inHg
Wind14.1 mph S
Humidity55%
Visibility6.2 mi
Dew point68°
Wed, 1493° / 74°0.04
93 °
Grimes, Wednesday, 14 October
Light rain. High 93°, low 74°.
Pressure29.91 inHg
Wind13.5 mph S
Humidity53%
Visibility6.2 mi
Dew point67°
Thu, 1590° / 70°0.08
90 °
Grimes, Thursday, 15 October
Light rain. High 90°, low 70°.
Pressure29.94 inHg
Wind11.8 mph S
Humidity58%
Visibility6.2 mi
Dew point66°
Fri, 1668° / 55°0.12
68 °
Grimes, Friday, 16 October
Light rain. High 68°, low 55°.
Pressure30.45 inHg
Wind17.6 mph N
Humidity51%
Visibility—
Dew point40°
Sat, 1762° / 48°0
62 °
Grimes, Saturday, 17 October
Overcast. High 62°, low 48°.
Pressure30.39 inHg
Wind12.1 mph NE
Humidity45%
Visibility—
Dew point37°
Sun, 1868° / 49°0
68 °
Grimes, Sunday, 18 October
Overcast. High 68°, low 49°.
Pressure30.27 inHg
Wind10.6 mph S
Humidity35%
Visibility—
Dew point35°
Mon, 1975° / 55°0.01
75 °
Grimes, Monday, 19 October
Light rain. High 75°, low 55°.
Pressure30.15 inHg
Wind13.7 mph S
Humidity31%
Visibility—
Dew point37°
Tue, 2073° / 61°0.09
73 °
Grimes, Tuesday, 20 October
Light rain. High 73°, low 61°.
Pressure29.97 inHg
Wind18.6 mph S
Humidity77%
Visibility—
Dew point63°
Wed, 2183° / 66°0
83 °
Grimes, Wednesday, 21 October
Overcast. High 83°, low 66°.
Pressure29.85 inHg
Wind17.2 mph S
Humidity71%
Visibility—
Dew point64°
Thu, 2269° / 55°0.02
69 °
Grimes, Thursday, 22 October
Light rain. High 69°, low 55°.
Pressure30.27 inHg
Wind21.3 mph N
Humidity33%
Visibility—
Dew point35°
Fri, 2375° / 56°0
75 °
Grimes, Friday, 23 October
Overcast. High 75°, low 56°.
Pressure30.27 inHg
Wind7.5 mph S
Humidity20%
Visibility—
Dew point26°
Sat, 2477° / 56°0
77 °
Grimes, Saturday, 24 October
Overcast. High 77°, low 56°.
Pressure30.03 inHg
Wind20.6 mph SW
Humidity32%
Visibility—
Dew point35°
Sun, 2585° / 62°0
85 °
Grimes, Sunday, 25 October
Clear. High 85°, low 62°.
Pressure29.77 inHg
Wind24 mph S
Humidity27%
Visibility—
Dew point43°
Mon, 2675° / 58°0
75 °
Grimes, Monday, 26 October
Clear. High 75°, low 58°.
Pressure30.03 inHg
Wind13.8 mph NE
Humidity44%
Visibility—
Dew point47°
Tue, 2770° / 58°0
70 °
Grimes, Tuesday, 27 October
Overcast. High 70°, low 58°.
Pressure30.00 inHg
Wind10.6 mph E
Humidity46%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2871° / 52°0.09
71 °
Grimes, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high71°
Average low52°
Average precipitation0.09 in
Chance of precipitation18%
Record high86° (2024)
Record low32° (2020)
Thu, 2972° / 52°0.04
72 °
Grimes, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high72°
Average low52°
Average precipitation0.04 in
Chance of precipitation17%
Record high85° (2003)
Record low33° (1980)
Fri, 3072° / 53°0.07
72 °
Grimes, Friday, 30 October
Climate normal for this date — 60-year average.
Average high72°
Average low53°
Average precipitation0.07 in
Chance of precipitation18%
Record high88° (2024)
Record low30° (1993)
Sat, 3170° / 51°0.1
70 °
Grimes, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high70°
Average low51°
Average precipitation0.1 in
Chance of precipitation22%
Record high86° (1963)
Record low22° (2019)
Sun, 0169° / 50°0.09
69 °
Grimes, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.09 in
Chance of precipitation18%
Record high88° (2016)
Record low33° (1991)
Mon, 0268° / 49°0.07
68 °
Grimes, Monday, 2 November
Climate normal for this date — 60-year average.
Average high68°
Average low49°
Average precipitation0.07 in
Chance of precipitation23%
Record high84° (2012)
Record low28° (1991)
Tue, 0367° / 49°0.04
67 °
Grimes, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high67°
Average low49°
Average precipitation0.04 in
Chance of precipitation12%
Record high85° (1988)
Record low22° (1991)
Wed, 0469° / 50°0.07
69 °
Grimes, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.07 in
Chance of precipitation13%
Record high86° (2017)
Record low27° (1991)
Thu, 0570° / 49°0.04
70 °
Grimes, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.04 in
Chance of precipitation13%
Record high87° (2017)
Record low33° (1970)
Fri, 0670° / 49°0.02
70 °
Grimes, Friday, 6 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.02 in
Chance of precipitation10%
Record high83° (1989)
Record low33° (1993)
Sat, 0769° / 49°0.06
69 °
Grimes, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high69°
Average low49°
Average precipitation0.06 in
Chance of precipitation20%
Record high85° (2023)
Record low34° (2019)
Sun, 0869° / 50°0.1
69 °
Grimes, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.1 in
Chance of precipitation17%
Record high87° (1980)
Record low28° (1991)
Mon, 0968° / 50°0.01
68 °
Grimes, Monday, 9 November
Climate normal for this date — 60-year average.
Average high68°
Average low50°
Average precipitation0.01 in
Chance of precipitation7%
Record high88° (2006)
Record low26° (2000)
Tue, 1067° / 48°0.01
67 °
Grimes, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high67°
Average low48°
Average precipitation0.01 in
Chance of precipitation10%
Record high82° (1995)
Record low28° (2000)
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 Grimes, 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 Grimes, 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.