Monthly outlook for Prairie City, IA: average high 86.5°, average low 68.2°. That is 2.9° above the climate normal for August. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 22 August (108.1°), the coolest 15 August (60.7°).
86.5°/68.2°
Average high / low
+2.9°
Above normal
6 / 5
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.2°
81.2°
+0.6°
19 August – 28 August
93.6°
81.4°
+6.8°
29 August – 7 September
at normal
79.6°
—
August records over 66 years
100.4°16 August 1988All-time high
43.9°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Mitchellville (8 mi).
Mon, 1087° / 73°0
87 °
Prairie City, Monday, 10 August
Overcast. High 87°, low 73°.
Pressure29.85 inHg
Wind13.3 mph E
Humidity75%
Visibility6.2 mi
Dew point74°
Tue, 1194° / 70°0.05
94 °
Prairie City, Tuesday, 11 August
Rain. High 94°, low 70°.
Pressure29.77 inHg
Wind9.2 mph SW
Humidity55%
Visibility6.2 mi
Dew point69°
Wed, 1285° / 71°0.17
85 °
Prairie City, Wednesday, 12 August
Rain. High 85°, low 71°.
Pressure29.85 inHg
Wind2.4 mph E
Humidity73%
Visibility6.2 mi
Dew point68°
Thu, 1373° / 62°0.29
73 °
Prairie City, Thursday, 13 August
Rain. High 73°, low 62°.
Pressure29.94 inHg
Wind14.7 mph NE
Humidity71%
Visibility—
Dew point61°
Fri, 1467° / 62°1.26
67 °
Prairie City, Friday, 14 August
Heavy rain. High 67°, low 62°.
Pressure30.12 inHg
Wind12.6 mph E
Humidity92%
Visibility—
Dew point62°
Sat, 1571° / 61°0.04
71 °
Prairie City, Saturday, 15 August
Light rain. High 71°, low 61°.
Pressure30.15 inHg
Wind11.6 mph E
Humidity85%
Visibility—
Dew point64°
Sun, 1680° / 66°0
80 °
Prairie City, Sunday, 16 August
Overcast. High 80°, low 66°.
Pressure30.12 inHg
Wind8 mph N
Humidity67%
Visibility—
Dew point65°
Mon, 1783° / 66°0
83 °
Prairie City, Monday, 17 August
Overcast. High 83°, low 66°.
Pressure30.06 inHg
Wind7.3 mph SE
Humidity67%
Visibility—
Dew point66°
Tue, 1888° / 66°0
88 °
Prairie City, Tuesday, 18 August
Overcast. High 88°, low 66°.
Pressure29.91 inHg
Wind13.4 mph SE
Humidity67%
Visibility—
Dew point69°
Wed, 1991° / 69°0
91 °
Prairie City, Wednesday, 19 August
Partly cloudy. High 91°, low 69°.
Pressure29.80 inHg
Wind9.8 mph SE
Humidity47%
Visibility—
Dew point65°
Thu, 2094° / 71°0
94 °
Prairie City, Thursday, 20 August
Overcast. High 94°, low 71°.
Pressure29.77 inHg
Wind12.6 mph NE
Humidity59%
Visibility—
Dew point70°
Fri, 2187° / 69°0.03
87 °
Prairie City, Friday, 21 August
Light rain. High 87°, low 69°.
Pressure29.94 inHg
Wind11.7 mph E
Humidity55%
Visibility—
Dew point64°
Sat, 22108° / 72°0
108 °
Prairie City, Saturday, 22 August
Clear. High 108°, low 72°.
Pressure29.74 inHg
Wind16.8 mph SW
Humidity35%
Visibility—
Dew point63°
Sun, 2391° / 75°0.07
91 °
Prairie City, Sunday, 23 August
Light rain. High 91°, low 75°.
Pressure29.83 inHg
Wind17.9 mph NE
Humidity50%
Visibility—
Dew point66°
Mon, 2491° / 70°0.01
91 °
Prairie City, Monday, 24 August
Light rain. High 91°, low 70°.
Pressure29.94 inHg
Wind11.1 mph E
Humidity57%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.13
82 °
Prairie City, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.13 in
Chance of precipitation38%
Record high96° (2003)
Record low52° (2025)
Wed, 2682° / 65°0.19
82 °
Prairie City, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.19 in
Chance of precipitation27%
Record high95° (2013)
Record low50° (2015)
Thu, 2781° / 65°0.16
81 °
Prairie City, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.16 in
Chance of precipitation33%
Record high96° (2013)
Record low53° (1967)
Fri, 2882° / 64°0.17
82 °
Prairie City, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.17 in
Chance of precipitation37%
Record high96° (1984)
Record low44° (1986)
Sat, 2982° / 64°0.11
82 °
Prairie City, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.11 in
Chance of precipitation25%
Record high94° (1984)
Record low50° (1988)
Sun, 3080° / 64°0.13
80 °
Prairie City, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation25%
Record high97° (2013)
Record low50° (2009)
Mon, 3180° / 63°0.09
80 °
Prairie City, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation25%
Record high94° (2000)
Record low46° (2009)
Tue, 0180° / 63°0.09
80 °
Prairie City, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation22%
Record high95° (1984)
Record low46° (1967)
Wed, 0280° / 63°0.09
80 °
Prairie City, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation28%
Record high95° (2000)
Record low51° (1974)
Thu, 0379° / 63°0.08
79 °
Prairie City, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.08 in
Chance of precipitation22%
Record high94° (2023)
Record low42° (1974)
Fri, 0479° / 62°0.08
79 °
Prairie City, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.08 in
Chance of precipitation30%
Record high95° (2023)
Record low43° (1974)
Sat, 0579° / 61°0.07
79 °
Prairie City, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.07 in
Chance of precipitation22%
Record high92° (2023)
Record low44° (1962)
Sun, 0679° / 62°0.12
79 °
Prairie City, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.12 in
Chance of precipitation28%
Record high93° (2020)
Record low45° (1962)
Mon, 0778° / 61°0.16
78 °
Prairie City, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.16 in
Chance of precipitation28%
Record high93° (2013)
Record low44° (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 Prairie City, 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 Prairie City, 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.