Monthly outlook for Brooks, IL: average high 87°, average low 70°. That is 0.7° above the climate normal for August. Precipitation is expected on 6 days (about 2.5 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 11 August (101.1°), the coolest 15 August (57.6°).
87°/70°
Average high / low
+0.7°
Above normal
6 / 5
Wet days / normal
2.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
88.9°
85.8°
+1.7°
18 August – 27 August
83.9°
86°
-1.2°
28 August – 6 September
at normal
83.9°
—
August records over 66 years
102.7°15 August 2007All-time high
49.5°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Flordell Hills (10 mi).
Sun, 0996° / 74°0
96 °
Brooks, Sunday, 9 August
Overcast. High 96°, low 74°.
Pressure29.94 inHg
Wind13.1 mph S
Humidity57%
Visibility6.2 mi
Dew point73°
Mon, 10100° / 76°0
100 °
Brooks, Monday, 10 August
Clear. High 100°, low 76°.
Pressure29.94 inHg
Wind11.2 mph SW
Humidity45%
Visibility6.2 mi
Dew point70°
Tue, 11101° / 78°0.02
101 °
Brooks, Tuesday, 11 August
Light rain. High 101°, low 78°.
Pressure29.88 inHg
Wind6.7 mph W
Humidity44%
Visibility6.2 mi
Dew point68°
Wed, 1287° / 78°0.04
87 °
Brooks, Wednesday, 12 August
Light rain. High 87°, low 78°.
Pressure29.85 inHg
Wind9.7 mph W
Humidity49%
Visibility6.2 mi
Dew point69°
Thu, 1385° / 71°0.48
85 °
Brooks, Thursday, 13 August
Rain. High 85°, low 71°.
Pressure29.85 inHg
Wind10.4 mph SE
Humidity67%
Visibility—
Dew point71°
Fri, 1477° / 64°0.01
77 °
Brooks, Friday, 14 August
Light rain. High 77°, low 64°.
Pressure30.15 inHg
Wind10 mph NE
Humidity51%
Visibility—
Dew point55°
Sat, 1578° / 58°0
78 °
Brooks, Saturday, 15 August
Overcast. High 78°, low 58°.
Pressure30.27 inHg
Wind8.7 mph E
Humidity49%
Visibility—
Dew point53°
Sun, 1679° / 62°0.06
79 °
Brooks, Sunday, 16 August
Light rain. High 79°, low 62°.
Pressure30.18 inHg
Wind12.1 mph S
Humidity66%
Visibility—
Dew point62°
Mon, 1796° / 72°0.26
96 °
Brooks, Monday, 17 August
Rain. High 96°, low 72°.
Pressure29.91 inHg
Wind14.7 mph S
Humidity51%
Visibility—
Dew point69°
Tue, 1887° / 74°0
87 °
Brooks, Tuesday, 18 August
Overcast. High 87°, low 74°.
Pressure29.97 inHg
Wind9.1 mph NE
Humidity62%
Visibility—
Dew point71°
Wed, 1993° / 72°0
93 °
Brooks, Wednesday, 19 August
Overcast. High 93°, low 72°.
Pressure29.91 inHg
Wind8.1 mph E
Humidity57%
Visibility—
Dew point70°
Thu, 2085° / 73°1.57
85 °
Brooks, Thursday, 20 August
Heavy rain. High 85°, low 73°.
Pressure29.88 inHg
Wind6.8 mph SE
Humidity66%
Visibility—
Dew point71°
Fri, 2182° / 70°0.06
82 °
Brooks, Friday, 21 August
Light rain. High 82°, low 70°.
Pressure29.94 inHg
Wind9.7 mph NE
Humidity75%
Visibility—
Dew point68°
Sat, 2284° / 67°0
84 °
Brooks, Saturday, 22 August
Overcast. High 84°, low 67°.
Pressure29.94 inHg
Wind7 mph NE
Humidity53%
Visibility—
Dew point62°
Sun, 2371° / 62°0.03
71 °
Brooks, Sunday, 23 August
Light rain. High 71°, low 62°.
Pressure30.15 inHg
Wind12.5 mph NE
Humidity68%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 68°0.09
86 °
Brooks, Monday, 24 August
Climate normal for this date — 60-year average.
Average high86°
Average low68°
Average precipitation0.09 in
Chance of precipitation30%
Record high99° (2023)
Record low57° (2015)
Tue, 2587° / 69°0.07
87 °
Brooks, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low69°
Average precipitation0.07 in
Chance of precipitation25%
Record high98° (2023)
Record low56° (2015)
Wed, 2686° / 69°0.14
86 °
Brooks, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.14 in
Chance of precipitation33%
Record high98° (1983)
Record low57° (2015)
Thu, 2786° / 69°0.13
86 °
Brooks, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.13 in
Chance of precipitation28%
Record high98° (1983)
Record low56° (2015)
Fri, 2886° / 69°0.08
86 °
Brooks, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.08 in
Chance of precipitation27%
Record high97° (1990)
Record low56° (1967)
Sat, 2985° / 68°0.07
85 °
Brooks, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.07 in
Chance of precipitation27%
Record high97° (1984)
Record low49° (1986)
Sun, 3084° / 68°0.13
84 °
Brooks, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.13 in
Chance of precipitation28%
Record high97° (2013)
Record low52° (1986)
Mon, 3184° / 68°0.11
84 °
Brooks, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high101° (2013)
Record low56° (1967)
Tue, 0184° / 68°0.11
84 °
Brooks, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high99° (2011)
Record low52° (1967)
Wed, 0284° / 67°0.12
84 °
Brooks, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.12 in
Chance of precipitation33%
Record high98° (2011)
Record low53° (1974)
Thu, 0383° / 67°0.09
83 °
Brooks, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.09 in
Chance of precipitation25%
Record high96° (2011)
Record low51° (1974)
Fri, 0483° / 66°0.12
83 °
Brooks, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.12 in
Chance of precipitation28%
Record high97° (1960)
Record low51° (1974)
Sat, 0583° / 65°0.04
83 °
Brooks, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.04 in
Chance of precipitation15%
Record high97° (1998)
Record low51° (1974)
Sun, 0683° / 65°0.05
83 °
Brooks, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.05 in
Chance of precipitation22%
Record high98° (1990)
Record low52° (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 Brooks, 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 Brooks, 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.