Monthly outlook for Gillett Grove, IA: average high 85.3°, average low 64.5°. That is 3.4° above the climate normal for August. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 22 August (101.7°), the coolest 14 August (56.6°).
85.3°/64.5°
Average high / low
+3.4°
Above normal
5 / 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
82.7°
79.1°
+2°
19 August – 28 August
89.7°
79.4°
+5.7°
29 August – 7 September
at normal
77.9°
—
August records over 66 years
99.5°22 August 2023All-time high
42.1°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Webb (5 mi).
Mon, 1079° / 61°0.33
79 °
Gillett Grove, Monday, 10 August
Rain. High 79°, low 61°.
Pressure29.88 inHg
Wind11.2 mph E
Humidity52%
Visibility6.2 mi
Dew point63°
Tue, 1196° / 70°0
96 °
Gillett Grove, Tuesday, 11 August
Clear. High 96°, low 70°.
Pressure29.77 inHg
Wind8.7 mph N
Humidity42%
Visibility6.2 mi
Dew point63°
Wed, 1292° / 63°0.05
92 °
Gillett Grove, Wednesday, 12 August
Light rain. High 92°, low 63°.
Pressure29.88 inHg
Wind10.8 mph E
Humidity34%
Visibility6.2 mi
Dew point54°
Thu, 1371° / 60°1.17
71 °
Gillett Grove, Thursday, 13 August
Heavy rain. High 71°, low 60°.
Pressure30.06 inHg
Wind11.3 mph NE
Humidity72%
Visibility—
Dew point55°
Fri, 1472° / 57°0.05
72 °
Gillett Grove, Friday, 14 August
Light rain. High 72°, low 57°.
Pressure30.12 inHg
Wind13.1 mph SE
Humidity56%
Visibility—
Dew point54°
Sat, 1568° / 59°0.01
68 °
Gillett Grove, Saturday, 15 August
Light rain. High 68°, low 59°.
Pressure30.15 inHg
Wind9.6 mph SE
Humidity88%
Visibility—
Dew point59°
Sun, 1686° / 66°0
86 °
Gillett Grove, Sunday, 16 August
Overcast. High 86°, low 66°.
Pressure30.12 inHg
Wind6.5 mph N
Humidity50%
Visibility—
Dew point60°
Mon, 1787° / 62°0
87 °
Gillett Grove, Monday, 17 August
Partly cloudy. High 87°, low 62°.
Pressure30.06 inHg
Wind9.6 mph SE
Humidity45%
Visibility—
Dew point57°
Tue, 1893° / 65°0.01
93 °
Gillett Grove, Tuesday, 18 August
Light rain. High 93°, low 65°.
Pressure29.83 inHg
Wind14.6 mph S
Humidity51%
Visibility—
Dew point64°
Wed, 1994° / 71°0.01
94 °
Gillett Grove, Wednesday, 19 August
Light rain. High 94°, low 71°.
Pressure29.77 inHg
Wind8 mph E
Humidity44%
Visibility—
Dew point66°
Thu, 2094° / 66°0.02
94 °
Gillett Grove, Thursday, 20 August
Light rain. High 94°, low 66°.
Pressure29.83 inHg
Wind21.5 mph NE
Humidity35%
Visibility—
Dew point60°
Fri, 2182° / 63°0.02
82 °
Gillett Grove, Friday, 21 August
Light rain. High 82°, low 63°.
Pressure29.91 inHg
Wind14.9 mph SE
Humidity52%
Visibility—
Dew point56°
Sat, 22102° / 68°0
102 °
Gillett Grove, Saturday, 22 August
Overcast. High 102°, low 68°.
Pressure29.71 inHg
Wind14.3 mph W
Humidity37%
Visibility—
Dew point61°
Sun, 2383° / 68°0
83 °
Gillett Grove, Sunday, 23 August
Light rain. High 83°, low 68°.
Pressure29.91 inHg
Wind11.6 mph NE
Humidity81%
Visibility—
Dew point68°
Mon, 2483° / 68°0.24
83 °
Gillett Grove, Monday, 24 August
Rain. High 83°, low 68°.
Pressure30.00 inHg
Wind11.4 mph SE
Humidity86%
Visibility—
Dew point69°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 63°0.14
79 °
Gillett Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.14 in
Chance of precipitation22%
Record high93° (2020)
Record low49° (2025)
Wed, 2679° / 64°0.13
79 °
Gillett Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.13 in
Chance of precipitation28%
Record high92° (2020)
Record low50° (2025)
Thu, 2779° / 63°0.11
79 °
Gillett Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.11 in
Chance of precipitation32%
Record high93° (1984)
Record low49° (1971)
Fri, 2879° / 62°0.2
79 °
Gillett Grove, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.2 in
Chance of precipitation35%
Record high98° (1984)
Record low42° (1986)
Sat, 2980° / 62°0.06
80 °
Gillett Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.06 in
Chance of precipitation18%
Record high93° (2012)
Record low48° (1988)
Sun, 3078° / 62°0.1
78 °
Gillett Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.1 in
Chance of precipitation32%
Record high94° (2012)
Record low47° (2009)
Mon, 3178° / 61°0.1
78 °
Gillett Grove, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.1 in
Chance of precipitation33%
Record high88° (1960)
Record low45° (2009)
Tue, 0178° / 61°0.07
78 °
Gillett Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.07 in
Chance of precipitation32%
Record high91° (2022)
Record low45° (1974)
Wed, 0278° / 61°0.12
78 °
Gillett Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.12 in
Chance of precipitation40%
Record high94° (2023)
Record low50° (1968)
Thu, 0377° / 61°0.07
77 °
Gillett Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.07 in
Chance of precipitation32%
Record high93° (2023)
Record low39° (1974)
Fri, 0477° / 60°0.09
77 °
Gillett Grove, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.09 in
Chance of precipitation25%
Record high93° (2023)
Record low44° (1974)
Sat, 0577° / 60°0.07
77 °
Gillett Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.07 in
Chance of precipitation27%
Record high90° (1960)
Record low40° (1962)
Sun, 0678° / 60°0.03
78 °
Gillett Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low60°
Average precipitation0.03 in
Chance of precipitation15%
Record high95° (1976)
Record low43° (2025)
Mon, 0777° / 59°0.13
77 °
Gillett Grove, Monday, 7 September
Climate normal for this date — 60-year average.
Average high77°
Average low59°
Average precipitation0.13 in
Chance of precipitation32%
Record high92° (1971)
Record low42° (1986)
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 Gillett Grove, 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 Gillett Grove, 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.