Monthly outlook for Dallas, TX: average high 104.4°, average low 83.5°. That is 5.8° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 1.1 inches. The warmest day looks like 18 August (108.6°), the coolest 9 August (75.8°).
104.4°/83.5°
Average high / low
+5.8°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
103.6°
94.1°
+5.3°
18 August – 27 August
105.8°
93.7°
+6.7°
28 August – 6 September
at normal
90.8°
—
August records over 66 years
108.9°18 August 2023All-time high
60.6°25 August 1966All-time low
Sun, 0997° / 76°0
97 °
Dallas, Sunday, 9 August
Partly cloudy. High 97°, low 76°.
Pressure30.00 inHg
Wind10 mph S
Humidity46%
Visibility6.2 mi
Dew point67°
Mon, 10103° / 79°0
103 °
Dallas, Monday, 10 August
Clear. High 103°, low 79°.
Pressure30.00 inHg
Wind8.9 mph S
Humidity36%
Visibility6.2 mi
Dew point64°
Tue, 11104° / 82°0.01
104 °
Dallas, Tuesday, 11 August
Light rain. High 104°, low 82°.
Pressure30.00 inHg
Wind9.6 mph S
Humidity38%
Visibility6.2 mi
Dew point66°
Wed, 12105° / 83°0
105 °
Dallas, Wednesday, 12 August
Mostly clear. High 105°, low 83°.
Pressure29.91 inHg
Wind10.3 mph SW
Humidity32%
Visibility6.2 mi
Dew point63°
Thu, 13106° / 83°0
106 °
Dallas, Thursday, 13 August
Overcast. High 106°, low 83°.
Pressure29.85 inHg
Wind15.6 mph S
Humidity29%
Visibility—
Dew point59°
Fri, 14105° / 83°0
105 °
Dallas, Friday, 14 August
Partly cloudy. High 105°, low 83°.
Pressure29.97 inHg
Wind16.7 mph S
Humidity33%
Visibility—
Dew point63°
Sat, 15101° / 86°0
101 °
Dallas, Saturday, 15 August
Light rain. High 101°, low 86°.
Pressure30.12 inHg
Wind15 mph S
Humidity32%
Visibility—
Dew point61°
Sun, 16106° / 86°0
106 °
Dallas, Sunday, 16 August
Overcast. High 106°, low 86°.
Pressure30.09 inHg
Wind11.4 mph SE
Humidity26%
Visibility—
Dew point58°
Mon, 17107° / 87°0
107 °
Dallas, Monday, 17 August
Mostly clear. High 107°, low 87°.
Pressure30.03 inHg
Wind14.6 mph S
Humidity24%
Visibility—
Dew point57°
Tue, 18109° / 86°0
109 °
Dallas, Tuesday, 18 August
Mostly clear. High 109°, low 86°.
Pressure29.97 inHg
Wind13.8 mph S
Humidity22%
Visibility—
Dew point55°
Wed, 19108° / 86°0
108 °
Dallas, Wednesday, 19 August
Mostly clear. High 108°, low 86°.
Pressure29.91 inHg
Wind13.2 mph S
Humidity26%
Visibility—
Dew point59°
Thu, 20107° / 85°0
107 °
Dallas, Thursday, 20 August
Clear. High 107°, low 85°.
Pressure29.88 inHg
Wind13 mph S
Humidity27%
Visibility—
Dew point59°
Fri, 21107° / 85°0
107 °
Dallas, Friday, 21 August
Clear. High 107°, low 85°.
Pressure29.85 inHg
Wind14.9 mph S
Humidity26%
Visibility—
Dew point58°
Sat, 22100° / 87°0
100 °
Dallas, Saturday, 22 August
Light rain. High 100°, low 87°.
Pressure29.88 inHg
Wind12.5 mph SW
Humidity43%
Visibility—
Dew point64°
Sun, 23104° / 85°0
104 °
Dallas, Sunday, 23 August
Overcast. High 104°, low 85°.
Pressure29.91 inHg
Wind10.1 mph NE
Humidity28%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2494° / 77°0.05
94 °
Dallas, Monday, 24 August
Climate normal for this date — 60-year average.
Average high94°
Average low77°
Average precipitation0.05 in
Chance of precipitation13%
Record high104° (2023)
Record low64° (1961)
Tue, 2594° / 76°0.02
94 °
Dallas, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high94°
Average low76°
Average precipitation0.02 in
Chance of precipitation13%
Record high106° (2023)
Record low61° (1966)
Wed, 2693° / 77°0.05
93 °
Dallas, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high93°
Average low77°
Average precipitation0.05 in
Chance of precipitation18%
Record high106° (2023)
Record low65° (1966)
Thu, 2793° / 76°0.07
93 °
Dallas, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high93°
Average low76°
Average precipitation0.07 in
Chance of precipitation27%
Record high105° (2011)
Record low66° (1966)
Fri, 2892° / 76°0.09
92 °
Dallas, Friday, 28 August
Climate normal for this date — 60-year average.
Average high92°
Average low76°
Average precipitation0.09 in
Chance of precipitation27%
Record high105° (2011)
Record low62° (1992)
Sat, 2992° / 76°0.13
92 °
Dallas, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high92°
Average low76°
Average precipitation0.13 in
Chance of precipitation30%
Record high103° (2020)
Record low64° (1986)
Sun, 3091° / 75°0.1
91 °
Dallas, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high91°
Average low75°
Average precipitation0.1 in
Chance of precipitation22%
Record high102° (2000)
Record low64° (1986)
Mon, 3191° / 75°0.1
91 °
Dallas, Monday, 31 August
Climate normal for this date — 60-year average.
Average high91°
Average low75°
Average precipitation0.1 in
Chance of precipitation27%
Record high103° (2000)
Record low66° (2004)
Tue, 0191° / 75°0.13
91 °
Dallas, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high91°
Average low75°
Average precipitation0.13 in
Chance of precipitation28%
Record high104° (2000)
Record low67° (2004)
Wed, 0290° / 75°0.19
90 °
Dallas, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high90°
Average low75°
Average precipitation0.19 in
Chance of precipitation37%
Record high105° (2000)
Record low64° (1987)
Thu, 0390° / 74°0.11
90 °
Dallas, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high90°
Average low74°
Average precipitation0.11 in
Chance of precipitation32%
Record high105° (2000)
Record low61° (1974)
Fri, 0491° / 74°0.05
91 °
Dallas, Friday, 4 September
Climate normal for this date — 60-year average.
Average high91°
Average low74°
Average precipitation0.05 in
Chance of precipitation27%
Record high107° (2000)
Record low58° (1974)
Sat, 0590° / 74°0.19
90 °
Dallas, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high90°
Average low74°
Average precipitation0.19 in
Chance of precipitation18%
Record high102° (2023)
Record low56° (1974)
Sun, 0690° / 73°0.13
90 °
Dallas, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high90°
Average low73°
Average precipitation0.13 in
Chance of precipitation20%
Record high101° (2023)
Record low56° (1974)
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 Dallas, 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 Dallas, 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.