Monthly outlook for Kishwaukee Glen, IL: average high 77.7°, average low 60.9°. That is 1.1° below the climate normal for August. Precipitation is expected on 7 days (about 2.4 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 10 August (88.2°), the coolest 23 August (54.2°).
77.7°/60.9°
Average high / low
−1.1°
Below normal
7 / 5
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
78.1°
79.8°
-0.9°
19 August – 28 August
77°
79.8°
-1.6°
29 August – 7 September
at normal
78°
—
August records over 66 years
98.8°23 August 2023All-time high
44.1°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Rockford (6 mi).
Mon, 1088° / 71°0.3
88 °
Kishwaukee Glen, Monday, 10 August
Rain. High 88°, low 71°.
Pressure29.91 inHg
Wind3.4 mph E
Humidity73%
Visibility6.2 mi
Dew point73°
Tue, 1179° / 64°0.3
79 °
Kishwaukee Glen, Tuesday, 11 August
Rain. High 79°, low 64°.
Pressure29.80 inHg
Wind9.8 mph S
Humidity85%
Visibility6.2 mi
Dew point73°
Wed, 1284° / 63°0
84 °
Kishwaukee Glen, Wednesday, 12 August
Clear. High 84°, low 63°.
Pressure29.88 inHg
Wind2.4 mph N
Humidity67%
Visibility6.2 mi
Dew point68°
Thu, 1372° / 61°0.11
72 °
Kishwaukee Glen, Thursday, 13 August
Light rain. High 72°, low 61°.
Pressure29.97 inHg
Wind10.5 mph E
Humidity80%
Visibility—
Dew point65°
Fri, 1473° / 57°0
73 °
Kishwaukee Glen, Friday, 14 August
Overcast. High 73°, low 57°.
Pressure30.15 inHg
Wind14.3 mph E
Humidity58%
Visibility—
Dew point56°
Sat, 1569° / 60°0.03
69 °
Kishwaukee Glen, Saturday, 15 August
Light rain. High 69°, low 60°.
Pressure30.18 inHg
Wind15.8 mph SE
Humidity70%
Visibility—
Dew point57°
Sun, 1674° / 64°0.29
74 °
Kishwaukee Glen, Sunday, 16 August
Rain. High 74°, low 64°.
Pressure30.03 inHg
Wind13.4 mph NW
Humidity76%
Visibility—
Dew point65°
Mon, 1776° / 58°0
76 °
Kishwaukee Glen, Monday, 17 August
Overcast. High 76°, low 58°.
Pressure30.12 inHg
Wind6.5 mph SW
Humidity65%
Visibility—
Dew point58°
Tue, 1878° / 59°0
78 °
Kishwaukee Glen, Tuesday, 18 August
Overcast. High 78°, low 59°.
Pressure29.88 inHg
Wind10.4 mph S
Humidity73%
Visibility—
Dew point62°
Wed, 1972° / 62°0
72 °
Kishwaukee Glen, Wednesday, 19 August
Partly cloudy. High 72°, low 62°.
Pressure29.85 inHg
Wind13.6 mph N
Humidity69%
Visibility—
Dew point61°
Thu, 2075° / 58°0.2
75 °
Kishwaukee Glen, Thursday, 20 August
Light rain. High 75°, low 58°.
Pressure29.94 inHg
Wind7 mph W
Humidity82%
Visibility—
Dew point63°
Fri, 2180° / 60°0.56
80 °
Kishwaukee Glen, Friday, 21 August
Rain. High 80°, low 60°.
Pressure29.77 inHg
Wind20.6 mph SW
Humidity62%
Visibility—
Dew point62°
Sat, 2280° / 63°0.02
80 °
Kishwaukee Glen, Saturday, 22 August
Light rain. High 80°, low 63°.
Pressure29.80 inHg
Wind15.5 mph NW
Humidity52%
Visibility—
Dew point58°
Sun, 2377° / 54°0
77 °
Kishwaukee Glen, Sunday, 23 August
Clear. High 77°, low 54°.
Pressure30.15 inHg
Wind9.5 mph W
Humidity52%
Visibility—
Dew point53°
Mon, 2478° / 59°0
78 °
Kishwaukee Glen, Monday, 24 August
Clear. High 78°, low 59°.
Pressure30.21 inHg
Wind8.1 mph SW
Humidity60%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 64°0.07
80 °
Kishwaukee Glen, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation20%
Record high92° (1991)
Record low51° (2017)
Wed, 2680° / 64°0.16
80 °
Kishwaukee Glen, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.16 in
Chance of precipitation30%
Record high94° (2003)
Record low50° (1964)
Thu, 2780° / 65°0.11
80 °
Kishwaukee Glen, 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 low51° (1968)
Fri, 2880° / 64°0.15
80 °
Kishwaukee Glen, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.15 in
Chance of precipitation35%
Record high92° (1984)
Record low46° (1986)
Sat, 2980° / 63°0.13
80 °
Kishwaukee Glen, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.13 in
Chance of precipitation22%
Record high93° (1984)
Record low44° (1965)
Sun, 3078° / 63°0.06
78 °
Kishwaukee Glen, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.06 in
Chance of precipitation30%
Record high93° (2013)
Record low53° (2009)
Mon, 3178° / 62°0.07
78 °
Kishwaukee Glen, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation23%
Record high91° (2012)
Record low46° (2009)
Tue, 0178° / 62°0.09
78 °
Kishwaukee Glen, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (2011)
Record low46° (1967)
Wed, 0279° / 62°0.05
79 °
Kishwaukee Glen, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.05 in
Chance of precipitation25%
Record high92° (2008)
Record low47° (1967)
Thu, 0378° / 62°0.11
78 °
Kishwaukee Glen, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.11 in
Chance of precipitation35%
Record high94° (2023)
Record low47° (1974)
Fri, 0477° / 61°0.09
77 °
Kishwaukee Glen, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.09 in
Chance of precipitation32%
Record high93° (2023)
Record low45° (1974)
Sat, 0577° / 60°0.06
77 °
Kishwaukee Glen, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.06 in
Chance of precipitation25%
Record high89° (2023)
Record low48° (1974)
Sun, 0677° / 61°0.1
77 °
Kishwaukee Glen, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.1 in
Chance of precipitation32%
Record high90° (1990)
Record low46° (1988)
Mon, 0777° / 60°0.12
77 °
Kishwaukee Glen, Monday, 7 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.12 in
Chance of precipitation28%
Record high90° (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 Kishwaukee Glen, 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 Kishwaukee Glen, 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.