Monthly outlook for Granger Homesteads, IA: average high 85.5°, average low 65.3°. That is 2.1° above the climate normal for August. Precipitation is expected on 4 days (about 2.1 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 11 August (103.3°), the coolest 23 August (60.1°).
85.5°/65.3°
Average high / low
+2.1°
Above normal
4 / 5
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.1°
81.7°
+1.3°
19 August – 28 August
87.8°
81.8°
+3.3°
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 (9 mi).
Mon, 1090° / 71°0
90 °
Granger Homesteads, Monday, 10 August
Overcast. High 90°, low 71°.
Pressure29.85 inHg
Wind12.1 mph E
Humidity59%
Visibility6.2 mi
Dew point70°
Tue, 11103° / 70°0
103 °
Granger Homesteads, Tuesday, 11 August
Overcast. High 103°, low 70°.
Pressure29.71 inHg
Wind13.5 mph SW
Humidity31%
Visibility6.2 mi
Dew point61°
Wed, 1292° / 69°0.03
92 °
Granger Homesteads, Wednesday, 12 August
Light rain. High 92°, low 69°.
Pressure29.85 inHg
Wind12.3 mph E
Humidity54%
Visibility6.2 mi
Dew point69°
Thu, 1370° / 66°1.29
70 °
Granger Homesteads, Thursday, 13 August
Heavy rain. High 70°, low 66°.
Pressure29.88 inHg
Wind14.3 mph NE
Humidity98%
Visibility—
Dew point69°
Fri, 1471° / 63°0.43
71 °
Granger Homesteads, Friday, 14 August
Rain. High 71°, low 63°.
Pressure30.06 inHg
Wind15.4 mph E
Humidity92%
Visibility—
Dew point65°
Sat, 1575° / 65°0.25
75 °
Granger Homesteads, Saturday, 15 August
Light rain. High 75°, low 65°.
Pressure30.06 inHg
Wind13.1 mph E
Humidity95%
Visibility—
Dew point67°
Sun, 1678° / 64°0
78 °
Granger Homesteads, Sunday, 16 August
Overcast. High 78°, low 64°.
Pressure30.12 inHg
Wind12.8 mph N
Humidity61%
Visibility—
Dew point62°
Mon, 1778° / 62°0
78 °
Granger Homesteads, Monday, 17 August
Overcast. High 78°, low 62°.
Pressure30.09 inHg
Wind6.7 mph S
Humidity56%
Visibility—
Dew point59°
Tue, 1886° / 62°0.11
86 °
Granger Homesteads, Tuesday, 18 August
Light rain. High 86°, low 62°.
Pressure29.80 inHg
Wind9.1 mph S
Humidity61%
Visibility—
Dew point65°
Wed, 1982° / 64°0
82 °
Granger Homesteads, Wednesday, 19 August
Mostly clear. High 82°, low 64°.
Pressure29.94 inHg
Wind13.9 mph NW
Humidity50%
Visibility—
Dew point57°
Thu, 2084° / 62°0
84 °
Granger Homesteads, Thursday, 20 August
Mostly clear. High 84°, low 62°.
Pressure29.94 inHg
Wind9 mph SE
Humidity45%
Visibility—
Dew point56°
Fri, 2194° / 65°0
94 °
Granger Homesteads, Friday, 21 August
Clear. High 94°, low 65°.
Pressure29.65 inHg
Wind13.4 mph SW
Humidity39%
Visibility—
Dew point61°
Sat, 2287° / 67°0
87 °
Granger Homesteads, Saturday, 22 August
Partly cloudy. High 87°, low 67°.
Pressure29.94 inHg
Wind15.5 mph NW
Humidity31%
Visibility—
Dew point49°
Sun, 2386° / 60°0
86 °
Granger Homesteads, Sunday, 23 August
Clear. High 86°, low 60°.
Pressure30.12 inHg
Wind7.2 mph SE
Humidity34%
Visibility—
Dew point50°
Mon, 2493° / 64°0
93 °
Granger Homesteads, Monday, 24 August
Partly cloudy. High 93°, low 64°.
Pressure30.12 inHg
Wind14.5 mph SE
Humidity31%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.14
82 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 °
Granger Homesteads, 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 Granger Homesteads, 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 Granger Homesteads, 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.