Monthly outlook for Goose Lake, IA: average high 78.8°, average low 62.3°. That is 0.9° below the climate normal for August. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 10 August (88.1°), the coolest 21 August (53.1°).
78.8°/62.3°
Average high / low
−0.9°
Below normal
4 / 5
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.2°
80.4°
-0.1°
19 August – 28 August
76.6°
80.4°
-2.1°
29 August – 7 September
at normal
78.6°
—
August records over 66 years
102.2°16 August 1988All-time high
45.1°29 August 1986All-time low
Mon, 1088° / 71°0
88 °
Goose Lake, Monday, 10 August
Overcast. High 88°, low 71°.
Pressure29.88 inHg
Wind3 mph SE
Humidity67%
Visibility6.2 mi
Dew point73°
Tue, 1187° / 73°0
87 °
Goose Lake, Tuesday, 11 August
Overcast. High 87°, low 73°.
Pressure29.77 inHg
Wind5.8 mph W
Humidity70%
Visibility6.2 mi
Dew point73°
Wed, 1282° / 69°0
82 °
Goose Lake, Wednesday, 12 August
Overcast. High 82°, low 69°.
Pressure29.88 inHg
Wind8.4 mph N
Humidity76%
Visibility6.2 mi
Dew point70°
Thu, 1373° / 60°0.04
73 °
Goose Lake, Thursday, 13 August
Light rain. High 73°, low 60°.
Pressure30.00 inHg
Wind7.4 mph NE
Humidity74%
Visibility—
Dew point63°
Fri, 1478° / 60°0
78 °
Goose Lake, Friday, 14 August
Overcast. High 78°, low 60°.
Pressure30.12 inHg
Wind6.8 mph E
Humidity54%
Visibility—
Dew point56°
Sat, 1565° / 60°0.08
65 °
Goose Lake, Saturday, 15 August
Light rain. High 65°, low 60°.
Pressure30.30 inHg
Wind7.9 mph E
Humidity93%
Visibility—
Dew point58°
Sun, 1673° / 59°0
73 °
Goose Lake, Sunday, 16 August
Overcast. High 73°, low 59°.
Pressure30.15 inHg
Wind6.6 mph SE
Humidity75%
Visibility—
Dew point58°
Mon, 1782° / 65°0
82 °
Goose Lake, Monday, 17 August
Partly cloudy. High 82°, low 65°.
Pressure30.06 inHg
Wind6.3 mph S
Humidity64%
Visibility—
Dew point65°
Tue, 1886° / 66°0
86 °
Goose Lake, Tuesday, 18 August
Overcast. High 86°, low 66°.
Pressure29.94 inHg
Wind13.4 mph SW
Humidity59%
Visibility—
Dew point66°
Wed, 1975° / 62°0.2
75 °
Goose Lake, Wednesday, 19 August
Light rain. High 75°, low 62°.
Pressure30.00 inHg
Wind14.8 mph N
Humidity91%
Visibility—
Dew point59°
Thu, 2070° / 54°0.07
70 °
Goose Lake, Thursday, 20 August
Light rain. High 70°, low 54°.
Pressure30.12 inHg
Wind8.5 mph N
Humidity50%
Visibility—
Dew point49°
Fri, 2175° / 53°0
75 °
Goose Lake, Friday, 21 August
Overcast. High 75°, low 53°.
Pressure30.06 inHg
Wind7.2 mph SE
Humidity56%
Visibility—
Dew point54°
Sat, 2277° / 56°0.01
77 °
Goose Lake, Saturday, 22 August
Light rain. High 77°, low 56°.
Pressure29.83 inHg
Wind11.6 mph SW
Humidity70%
Visibility—
Dew point61°
Sun, 2380° / 64°0
80 °
Goose Lake, Sunday, 23 August
Mostly clear. High 80°, low 64°.
Pressure29.94 inHg
Wind15.6 mph SW
Humidity45%
Visibility—
Dew point55°
Mon, 2483° / 61°0.04
83 °
Goose Lake, Monday, 24 August
Light rain. High 83°, low 61°.
Pressure29.97 inHg
Wind12.1 mph S
Humidity54%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 64°0.13
81 °
Goose Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.13 in
Chance of precipitation30%
Record high93° (2003)
Record low52° (2025)
Wed, 2681° / 64°0.17
81 °
Goose Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.17 in
Chance of precipitation30%
Record high94° (2003)
Record low50° (1964)
Thu, 2780° / 65°0.11
80 °
Goose Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.11 in
Chance of precipitation27%
Record high95° (2024)
Record low52° (1968)
Fri, 2880° / 64°0.19
80 °
Goose Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.19 in
Chance of precipitation37%
Record high93° (1984)
Record low46° (1986)
Sat, 2980° / 64°0.12
80 °
Goose Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.12 in
Chance of precipitation27%
Record high93° (1984)
Record low45° (1986)
Sun, 3079° / 63°0.07
79 °
Goose Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.07 in
Chance of precipitation25%
Record high94° (2013)
Record low53° (2009)
Mon, 3179° / 62°0.07
79 °
Goose Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.07 in
Chance of precipitation23%
Record high93° (2000)
Record low47° (2009)
Tue, 0179° / 62°0.12
79 °
Goose Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.12 in
Chance of precipitation27%
Record high94° (1984)
Record low47° (1967)
Wed, 0279° / 62°0.07
79 °
Goose Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.07 in
Chance of precipitation27%
Record high92° (1960)
Record low47° (1967)
Thu, 0378° / 62°0.13
78 °
Goose Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.13 in
Chance of precipitation32%
Record high93° (2023)
Record low48° (1974)
Fri, 0478° / 61°0.09
78 °
Goose Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (2023)
Record low46° (2025)
Sat, 0578° / 60°0.09
78 °
Goose Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.09 in
Chance of precipitation18%
Record high91° (2023)
Record low48° (1974)
Sun, 0678° / 60°0.08
78 °
Goose Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.08 in
Chance of precipitation30%
Record high92° (1960)
Record low45° (1962)
Mon, 0778° / 60°0.11
78 °
Goose Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.11 in
Chance of precipitation27%
Record high92° (1960)
Record low45° (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 Goose Lake, 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 Goose Lake, 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.