Monthly outlook for Minooka, IL: average high 78.7°, average low 63°. That is 1.2° below the climate normal for August. Precipitation is expected on 4 days (about 1.8 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 9 August (87°), the coolest 23 August (50.5°).
78.7°/63°
Average high / low
−1.2°
Below normal
4 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
79.3°
81°
-1°
18 August – 27 August
77.7°
81°
-1.8°
28 August – 6 September
at normal
79.5°
—
August records over 66 years
97.9°24 August 2023All-time high
45.7°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Joliet (8 mi).
Sun, 0987° / 65°1.07
87 °
Minooka, Sunday, 9 August
Heavy rain. High 87°, low 65°.
Pressure29.94 inHg
Wind6.1 mph W
Humidity89%
Visibility3.3 mi
Dew point75°
Mon, 1084° / 72°0.03
84 °
Minooka, Monday, 10 August
Light rain. High 84°, low 72°.
Pressure29.91 inHg
Wind10.4 mph S
Humidity77%
Visibility6.2 mi
Dew point74°
Tue, 1186° / 73°0.15
86 °
Minooka, Tuesday, 11 August
Rain. High 86°, low 73°.
Pressure29.77 inHg
Wind13.5 mph SW
Humidity79%
Visibility6.2 mi
Dew point76°
Wed, 1279° / 68°0.02
79 °
Minooka, Wednesday, 12 August
Light rain. High 79°, low 68°.
Pressure29.88 inHg
Wind5 mph W
Humidity83%
Visibility6.2 mi
Dew point70°
Thu, 1373° / 61°0.02
73 °
Minooka, Thursday, 13 August
Light rain. High 73°, low 61°.
Pressure29.94 inHg
Wind14.1 mph E
Humidity72%
Visibility—
Dew point61°
Fri, 1473° / 56°0
73 °
Minooka, Friday, 14 August
Clear. High 73°, low 56°.
Pressure30.18 inHg
Wind8.3 mph NW
Humidity61%
Visibility—
Dew point57°
Sat, 1573° / 54°0
73 °
Minooka, Saturday, 15 August
Overcast. High 73°, low 54°.
Pressure30.33 inHg
Wind6.1 mph S
Humidity64%
Visibility—
Dew point57°
Sun, 1676° / 57°0
76 °
Minooka, Sunday, 16 August
Partly cloudy. High 76°, low 57°.
Pressure30.21 inHg
Wind10.4 mph S
Humidity67%
Visibility—
Dew point60°
Mon, 1778° / 67°0.03
78 °
Minooka, Monday, 17 August
Light rain. High 78°, low 67°.
Pressure30.00 inHg
Wind6.9 mph S
Humidity88%
Visibility—
Dew point69°
Tue, 1884° / 66°0.01
84 °
Minooka, Tuesday, 18 August
Light rain. High 84°, low 66°.
Pressure30.00 inHg
Wind7 mph E
Humidity70%
Visibility—
Dew point69°
Wed, 1982° / 63°0.4
82 °
Minooka, Wednesday, 19 August
Rain. High 82°, low 63°.
Pressure29.91 inHg
Wind8.9 mph SW
Humidity74%
Visibility—
Dew point70°
Thu, 2077° / 66°0.05
77 °
Minooka, Thursday, 20 August
Light rain. High 77°, low 66°.
Pressure29.88 inHg
Wind8.9 mph N
Humidity78%
Visibility—
Dew point67°
Fri, 2179° / 63°0
79 °
Minooka, Friday, 21 August
Light rain. High 79°, low 63°.
Pressure29.97 inHg
Wind6.7 mph N
Humidity63%
Visibility—
Dew point63°
Sat, 2277° / 59°0.01
77 °
Minooka, Saturday, 22 August
Light rain. High 77°, low 59°.
Pressure29.91 inHg
Wind14.7 mph NE
Humidity71%
Visibility—
Dew point65°
Sun, 2367° / 50°0
67 °
Minooka, Sunday, 23 August
Clear. High 67°, low 50°.
Pressure30.24 inHg
Wind10.7 mph E
Humidity53%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 64°0.12
81 °
Minooka, Monday, 24 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.12 in
Chance of precipitation27%
Record high98° (2023)
Record low53° (1967)
Tue, 2581° / 64°0.11
81 °
Minooka, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.11 in
Chance of precipitation27%
Record high92° (1991)
Record low52° (2017)
Wed, 2682° / 66°0.17
82 °
Minooka, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.17 in
Chance of precipitation35%
Record high95° (2024)
Record low51° (1964)
Thu, 2782° / 66°0.12
82 °
Minooka, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.12 in
Chance of precipitation27%
Record high96° (2024)
Record low53° (2025)
Fri, 2881° / 65°0.11
81 °
Minooka, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.11 in
Chance of precipitation25%
Record high93° (1984)
Record low48° (1986)
Sat, 2981° / 64°0.12
81 °
Minooka, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.12 in
Chance of precipitation33%
Record high94° (1984)
Record low46° (1986)
Sun, 3080° / 64°0.07
80 °
Minooka, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation22%
Record high93° (2013)
Record low50° (1986)
Mon, 3180° / 63°0.07
80 °
Minooka, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation22%
Record high90° (2011)
Record low51° (2009)
Tue, 0180° / 63°0.11
80 °
Minooka, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation30%
Record high96° (2011)
Record low49° (2009)
Wed, 0280° / 63°0.06
80 °
Minooka, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.06 in
Chance of precipitation22%
Record high94° (2008)
Record low47° (2017)
Thu, 0380° / 63°0.08
80 °
Minooka, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation25%
Record high93° (2023)
Record low49° (1974)
Fri, 0478° / 62°0.1
78 °
Minooka, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.1 in
Chance of precipitation28%
Record high92° (2023)
Record low47° (1974)
Sat, 0579° / 62°0.06
79 °
Minooka, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.06 in
Chance of precipitation17%
Record high90° (1983)
Record low50° (1974)
Sun, 0678° / 62°0.12
78 °
Minooka, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.12 in
Chance of precipitation37%
Record high92° (1990)
Record low48° (1988)
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 Minooka, IL 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 Minooka, IL 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.