Monthly outlook for Dallas Center, IA: average high 85.2°, average low 65.3°. That is 1.9° above the climate normal for August. Precipitation is expected on 4 days (about 2.3 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 11 August (103.8°), the coolest 23 August (59.6°).
85.2°/65.3°
Average high / low
+1.9°
Above normal
4 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.7°
81.7°
+1.1°
19 August – 28 August
87.6°
81.8°
+3.2°
29 August – 7 September
at normal
80°
—
August records over 66 years
101.1°16 August 1983All-time high
43.9°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Urbandale (11 mi).
Mon, 1089° / 71°0.02
89 °
Dallas Center, Monday, 10 August
Light rain. High 89°, low 71°.
Pressure29.83 inHg
Wind11 mph E
Humidity56%
Visibility6.2 mi
Dew point68°
Tue, 11104° / 70°0
104 °
Dallas Center, Tuesday, 11 August
Overcast. High 104°, low 70°.
Pressure29.71 inHg
Wind13.2 mph SW
Humidity29%
Visibility6.2 mi
Dew point60°
Wed, 1294° / 68°0.02
94 °
Dallas Center, Wednesday, 12 August
Light rain. High 94°, low 68°.
Pressure29.83 inHg
Wind12.4 mph E
Humidity53%
Visibility6.2 mi
Dew point70°
Thu, 1370° / 66°1.43
70 °
Dallas Center, Thursday, 13 August
Heavy rain. High 70°, low 66°.
Pressure29.88 inHg
Wind14.9 mph E
Humidity98%
Visibility—
Dew point69°
Fri, 1470° / 63°0.49
70 °
Dallas Center, Friday, 14 August
Rain. High 70°, low 63°.
Pressure30.06 inHg
Wind14.9 mph E
Humidity94%
Visibility—
Dew point65°
Sat, 1574° / 65°0.19
74 °
Dallas Center, Saturday, 15 August
Light rain. High 74°, low 65°.
Pressure30.06 inHg
Wind12.5 mph E
Humidity95%
Visibility—
Dew point67°
Sun, 1678° / 64°0
78 °
Dallas Center, Sunday, 16 August
Overcast. High 78°, low 64°.
Pressure30.12 inHg
Wind12.5 mph N
Humidity62%
Visibility—
Dew point62°
Mon, 1777° / 62°0
77 °
Dallas Center, Monday, 17 August
Overcast. High 77°, low 62°.
Pressure30.09 inHg
Wind7.2 mph S
Humidity56%
Visibility—
Dew point58°
Tue, 1886° / 62°0.09
86 °
Dallas Center, Tuesday, 18 August
Light rain. High 86°, low 62°.
Pressure29.80 inHg
Wind9.3 mph S
Humidity61%
Visibility—
Dew point65°
Wed, 1982° / 63°0
82 °
Dallas Center, Wednesday, 19 August
Mostly clear. High 82°, low 63°.
Pressure29.97 inHg
Wind13.2 mph NW
Humidity51%
Visibility—
Dew point58°
Thu, 2084° / 62°0
84 °
Dallas Center, Thursday, 20 August
Mostly clear. High 84°, low 62°.
Pressure29.94 inHg
Wind9.2 mph SE
Humidity46%
Visibility—
Dew point57°
Fri, 2193° / 65°0
93 °
Dallas Center, Friday, 21 August
Clear. High 93°, low 65°.
Pressure29.65 inHg
Wind13.2 mph SW
Humidity38%
Visibility—
Dew point60°
Sat, 2286° / 67°0
86 °
Dallas Center, Saturday, 22 August
Partly cloudy. High 86°, low 67°.
Pressure29.94 inHg
Wind15 mph NW
Humidity32%
Visibility—
Dew point49°
Sun, 2386° / 60°0
86 °
Dallas Center, Sunday, 23 August
Clear. High 86°, low 60°.
Pressure30.15 inHg
Wind7.9 mph SE
Humidity34%
Visibility—
Dew point49°
Mon, 2494° / 66°0
94 °
Dallas Center, Monday, 24 August
Mostly clear. High 94°, low 66°.
Pressure30.09 inHg
Wind14.9 mph SE
Humidity30%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.14
82 °
Dallas Center, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.14 in
Chance of precipitation35%
Record high97° (2003)
Record low52° (2015)
Wed, 2682° / 66°0.19
82 °
Dallas Center, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.19 in
Chance of precipitation37%
Record high95° (2013)
Record low50° (2015)
Thu, 2782° / 66°0.16
82 °
Dallas Center, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.16 in
Chance of precipitation35%
Record high96° (2013)
Record low52° (1971)
Fri, 2882° / 64°0.18
82 °
Dallas Center, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.18 in
Chance of precipitation32%
Record high96° (1984)
Record low44° (1986)
Sat, 2982° / 64°0.11
82 °
Dallas Center, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.11 in
Chance of precipitation23%
Record high94° (1984)
Record low49° (1988)
Sun, 3081° / 64°0.1
81 °
Dallas Center, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.1 in
Chance of precipitation27%
Record high98° (2013)
Record low49° (2009)
Mon, 3180° / 63°0.09
80 °
Dallas Center, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation25%
Record high93° (2000)
Record low48° (2009)
Tue, 0180° / 63°0.09
80 °
Dallas Center, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation23%
Record high94° (1984)
Record low46° (1967)
Wed, 0280° / 64°0.11
80 °
Dallas Center, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.11 in
Chance of precipitation33%
Record high94° (2000)
Record low52° (1974)
Thu, 0380° / 63°0.09
80 °
Dallas Center, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation23%
Record high96° (2023)
Record low42° (1974)
Fri, 0479° / 62°0.09
79 °
Dallas Center, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation28%
Record high96° (2023)
Record low44° (1974)
Sat, 0580° / 62°0.09
80 °
Dallas Center, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.09 in
Chance of precipitation20%
Record high94° (2023)
Record low44° (1962)
Sun, 0679° / 62°0.09
79 °
Dallas Center, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.09 in
Chance of precipitation23%
Record high93° (2020)
Record low45° (1988)
Mon, 0779° / 62°0.13
79 °
Dallas Center, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.13 in
Chance of precipitation28%
Record high93° (1971)
Record low43° (2025)
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 Center, IA 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 Center, IA 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.