Monthly outlook for Plainview, IA: average high 82.5°, average low 64.2°. That is 0.8° above the climate normal for August. Precipitation is expected on 5 days (about 0.6 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 11 August (92.1°), the coolest 23 August (46.1°).
82.5°/64.2°
Average high / low
+0.8°
Above normal
5 / 5
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
82.9°
81.2°
+0.9°
18 August – 27 August
82°
81.2°
+0.5°
28 August – 6 September
at normal
79.6°
—
August records over 66 years
101.7°16 August 1988All-time high
46.8°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Davenport (12 mi).
Sun, 0991° / 64°0
91 °
Plainview, Sunday, 9 August
Overcast. High 91°, low 64°.
Pressure29.85 inHg
Wind10.7 mph S
Humidity69%
Visibility6.2 mi
Dew point73°
Mon, 1086° / 73°0.01
86 °
Plainview, Monday, 10 August
Light rain. High 86°, low 73°.
Pressure29.83 inHg
Wind6.5 mph S
Humidity69%
Visibility6.2 mi
Dew point71°
Tue, 1192° / 73°0.01
92 °
Plainview, Tuesday, 11 August
Light rain. High 92°, low 73°.
Pressure29.77 inHg
Wind12.2 mph SW
Humidity64%
Visibility6.2 mi
Dew point71°
Wed, 1284° / 71°0.06
84 °
Plainview, Wednesday, 12 August
Light rain. High 84°, low 71°.
Pressure29.88 inHg
Wind4.1 mph SE
Humidity86%
Visibility6.2 mi
Dew point70°
Thu, 1375° / 63°0.09
75 °
Plainview, Thursday, 13 August
Light rain. High 75°, low 63°.
Pressure29.94 inHg
Wind11.1 mph NE
Humidity68%
Visibility—
Dew point63°
Fri, 1477° / 59°0
77 °
Plainview, Friday, 14 August
Clear. High 77°, low 59°.
Pressure30.18 inHg
Wind6.3 mph E
Humidity53%
Visibility—
Dew point55°
Sat, 1577° / 57°0
77 °
Plainview, Saturday, 15 August
Overcast. High 77°, low 57°.
Pressure30.27 inHg
Wind8.7 mph S
Humidity55%
Visibility—
Dew point56°
Sun, 1678° / 59°0
78 °
Plainview, Sunday, 16 August
Overcast. High 78°, low 59°.
Pressure30.12 inHg
Wind12.7 mph S
Humidity60%
Visibility—
Dew point60°
Mon, 1788° / 68°0.02
88 °
Plainview, Monday, 17 August
Light rain. High 88°, low 68°.
Pressure29.94 inHg
Wind6.9 mph N
Humidity67%
Visibility—
Dew point70°
Tue, 1887° / 70°0
87 °
Plainview, Tuesday, 18 August
Overcast. High 87°, low 70°.
Pressure30.00 inHg
Wind9.5 mph SE
Humidity59%
Visibility—
Dew point67°
Wed, 1988° / 69°0.17
88 °
Plainview, Wednesday, 19 August
Light rain. High 88°, low 69°.
Pressure29.88 inHg
Wind9.3 mph SW
Humidity61%
Visibility—
Dew point69°
Thu, 2081° / 65°0.14
81 °
Plainview, Thursday, 20 August
Light rain. High 81°, low 65°.
Pressure29.94 inHg
Wind10.7 mph NE
Humidity68%
Visibility—
Dew point65°
Fri, 2184° / 63°0
84 °
Plainview, Friday, 21 August
Clear. High 84°, low 63°.
Pressure29.97 inHg
Wind5.7 mph S
Humidity51%
Visibility—
Dew point60°
Sat, 2280° / 60°0.03
80 °
Plainview, Saturday, 22 August
Light rain. High 80°, low 60°.
Pressure29.94 inHg
Wind16 mph NE
Humidity64%
Visibility—
Dew point65°
Sun, 2371° / 46°0
71 °
Plainview, Sunday, 23 August
Partly cloudy. High 71°, low 46°.
Pressure30.21 inHg
Wind12.1 mph E
Humidity44%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 64°0.08
81 °
Plainview, Monday, 24 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation27%
Record high98° (2023)
Record low53° (1987)
Tue, 2582° / 65°0.12
82 °
Plainview, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.12 in
Chance of precipitation35%
Record high94° (2003)
Record low53° (2025)
Wed, 2682° / 66°0.19
82 °
Plainview, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.19 in
Chance of precipitation33%
Record high94° (2003)
Record low51° (2025)
Thu, 2781° / 66°0.11
81 °
Plainview, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.11 in
Chance of precipitation23%
Record high96° (2024)
Record low54° (2025)
Fri, 2881° / 65°0.14
81 °
Plainview, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.14 in
Chance of precipitation37%
Record high95° (1984)
Record low47° (1986)
Sat, 2981° / 65°0.09
81 °
Plainview, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.09 in
Chance of precipitation22%
Record high95° (1984)
Record low47° (1986)
Sun, 3080° / 64°0.07
80 °
Plainview, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation22%
Record high97° (2013)
Record low53° (2009)
Mon, 3180° / 63°0.09
80 °
Plainview, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation22%
Record high94° (2000)
Record low47° (2009)
Tue, 0180° / 63°0.11
80 °
Plainview, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation30%
Record high95° (1984)
Record low47° (1967)
Wed, 0280° / 63°0.08
80 °
Plainview, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation28%
Record high93° (2000)
Record low49° (1967)
Thu, 0379° / 63°0.12
79 °
Plainview, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.12 in
Chance of precipitation27%
Record high92° (2023)
Record low49° (1974)
Fri, 0479° / 62°0.1
79 °
Plainview, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.1 in
Chance of precipitation25%
Record high92° (2023)
Record low45° (1974)
Sat, 0579° / 61°0.06
79 °
Plainview, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.06 in
Chance of precipitation22%
Record high92° (1990)
Record low49° (1974)
Sun, 0678° / 62°0.12
78 °
Plainview, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.12 in
Chance of precipitation30%
Record high93° (1990)
Record low46° (1962)
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 Plainview, 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 Plainview, 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.