Monthly outlook for East Brooklyn, IL: average high 83.7°, average low 67.2°. That is 1.5° above the climate normal for August. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 22 August (92.7°), the coolest 14 August (59.2°).
83.7°/67.2°
Average high / low
+1.5°
Above normal
5 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.8°
81°
-0.1°
19 August – 28 August
88.5°
81.4°
+4°
29 August – 7 September
at normal
80°
—
August records over 66 years
97.5°17 August 1983All-time high
45°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Cabery (13 mi).
Mon, 1091° / 73°0.02
91 °
East Brooklyn, Monday, 10 August
Light rain. High 91°, low 73°.
Pressure29.88 inHg
Wind9.4 mph W
Humidity74%
Visibility6.2 mi
Dew point75°
Tue, 1186° / 71°0.05
86 °
East Brooklyn, Tuesday, 11 August
Light rain. High 86°, low 71°.
Pressure29.85 inHg
Wind9.4 mph W
Humidity78%
Visibility6.2 mi
Dew point75°
Wed, 1282° / 69°0.05
82 °
East Brooklyn, Wednesday, 12 August
Light rain. High 82°, low 69°.
Pressure29.85 inHg
Wind7 mph W
Humidity85%
Visibility6.2 mi
Dew point74°
Thu, 1376° / 62°0.11
76 °
East Brooklyn, Thursday, 13 August
Light rain. High 76°, low 62°.
Pressure30.00 inHg
Wind9.7 mph NE
Humidity73%
Visibility—
Dew point65°
Fri, 1474° / 59°0.31
74 °
East Brooklyn, Friday, 14 August
Rain. High 74°, low 59°.
Pressure30.15 inHg
Wind11.2 mph E
Humidity64%
Visibility—
Dew point57°
Sat, 1575° / 62°0
75 °
East Brooklyn, Saturday, 15 August
Overcast. High 75°, low 62°.
Pressure30.21 inHg
Wind11.6 mph SE
Humidity65%
Visibility—
Dew point60°
Sun, 1678° / 61°0.02
78 °
East Brooklyn, Sunday, 16 August
Light rain. High 78°, low 61°.
Pressure30.09 inHg
Wind7.2 mph SE
Humidity75%
Visibility—
Dew point66°
Mon, 1781° / 64°0.01
81 °
East Brooklyn, Monday, 17 August
Light rain. High 81°, low 64°.
Pressure30.09 inHg
Wind6.3 mph E
Humidity70%
Visibility—
Dew point66°
Tue, 1879° / 63°0
79 °
East Brooklyn, Tuesday, 18 August
Partly cloudy. High 79°, low 63°.
Pressure30.03 inHg
Wind7 mph SE
Humidity74%
Visibility—
Dew point68°
Wed, 1986° / 67°0.04
86 °
East Brooklyn, Wednesday, 19 August
Light rain. High 86°, low 67°.
Pressure29.91 inHg
Wind15 mph S
Humidity73%
Visibility—
Dew point71°
Thu, 2090° / 74°0
90 °
East Brooklyn, Thursday, 20 August
Overcast. High 90°, low 74°.
Pressure29.80 inHg
Wind10 mph SW
Humidity61%
Visibility—
Dew point72°
Fri, 2186° / 73°0
86 °
East Brooklyn, Friday, 21 August
Mostly clear. High 86°, low 73°.
Pressure29.88 inHg
Wind12.9 mph NE
Humidity68%
Visibility—
Dew point73°
Sat, 2293° / 69°0
93 °
East Brooklyn, Saturday, 22 August
Clear. High 93°, low 69°.
Pressure29.85 inHg
Wind11.4 mph S
Humidity70%
Visibility—
Dew point76°
Sun, 2392° / 74°0
92 °
East Brooklyn, Sunday, 23 August
Light rain. High 92°, low 74°.
Pressure29.83 inHg
Wind11.2 mph SW
Humidity56%
Visibility—
Dew point71°
Mon, 2485° / 68°0.81
85 °
East Brooklyn, Monday, 24 August
Heavy rain. High 85°, low 68°.
Pressure30.03 inHg
Wind11.4 mph E
Humidity71%
Visibility—
Dew point70°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.13
82 °
East Brooklyn, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.13 in
Chance of precipitation32%
Record high94° (1991)
Record low52° (2017)
Wed, 2682° / 65°0.15
82 °
East Brooklyn, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.15 in
Chance of precipitation32%
Record high94° (2024)
Record low51° (1964)
Thu, 2782° / 66°0.11
82 °
East Brooklyn, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.11 in
Chance of precipitation23%
Record high96° (2024)
Record low53° (1968)
Fri, 2881° / 65°0.15
81 °
East Brooklyn, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.15 in
Chance of precipitation32%
Record high93° (1991)
Record low48° (1986)
Sat, 2981° / 64°0.12
81 °
East Brooklyn, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.12 in
Chance of precipitation38%
Record high93° (1984)
Record low45° (1986)
Sun, 3080° / 64°0.06
80 °
East Brooklyn, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.06 in
Chance of precipitation25%
Record high95° (1995)
Record low48° (1986)
Mon, 3180° / 63°0.09
80 °
East Brooklyn, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation27%
Record high94° (2011)
Record low49° (2009)
Tue, 0180° / 63°0.11
80 °
East Brooklyn, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation27%
Record high100° (2011)
Record low49° (2009)
Wed, 0280° / 63°0.07
80 °
East Brooklyn, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation23%
Record high98° (2011)
Record low47° (2017)
Thu, 0380° / 63°0.07
80 °
East Brooklyn, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation25%
Record high96° (2011)
Record low48° (1974)
Fri, 0479° / 62°0.07
79 °
East Brooklyn, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.07 in
Chance of precipitation23%
Record high94° (1960)
Record low45° (1974)
Sat, 0580° / 61°0.06
80 °
East Brooklyn, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low61°
Average precipitation0.06 in
Chance of precipitation20%
Record high92° (1999)
Record low49° (1997)
Sun, 0679° / 62°0.11
79 °
East Brooklyn, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.11 in
Chance of precipitation33%
Record high94° (1960)
Record low45° (1962)
Mon, 0779° / 61°0.09
79 °
East Brooklyn, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.09 in
Chance of precipitation28%
Record high94° (1960)
Record low47° (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 East Brooklyn, 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 East Brooklyn, 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.