Monthly outlook for Apple Canyon Lake, IL: average high 78.2°, average low 61.5°. That is 1° below the climate normal for August. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 9 August (85.1°), the coolest 23 August (55.9°).
78.2°/61.5°
Average high / low
−1°
Below normal
6 / 5
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
78.4°
80°
-0.9°
19 August – 28 August
77.8°
80°
-1.2°
29 August – 7 September
at normal
77.9°
—
August records over 66 years
99.7°23 August 2023All-time high
46.2°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Gratiot (13 mi).
Mon, 1085° / 71°0.19
85 °
Apple Canyon Lake, Monday, 10 August
Rain. High 85°, low 71°.
Pressure29.91 inHg
Wind5.5 mph E
Humidity74%
Visibility6.2 mi
Dew point72°
Tue, 1185° / 65°0.02
85 °
Apple Canyon Lake, Tuesday, 11 August
Light rain. High 85°, low 65°.
Pressure29.83 inHg
Wind4.6 mph E
Humidity91%
Visibility6.2 mi
Dew point72°
Wed, 1284° / 65°0
84 °
Apple Canyon Lake, Wednesday, 12 August
Clear. High 84°, low 65°.
Pressure29.88 inHg
Wind3.6 mph NE
Humidity70%
Visibility6.2 mi
Dew point70°
Thu, 1370° / 62°0.24
70 °
Apple Canyon Lake, Thursday, 13 August
Rain. High 70°, low 62°.
Pressure29.97 inHg
Wind8.2 mph SE
Humidity86%
Visibility6.2 mi
Dew point67°
Fri, 1474° / 56°0
74 °
Apple Canyon Lake, Friday, 14 August
Overcast. High 74°, low 56°.
Pressure30.15 inHg
Wind13.4 mph E
Humidity60%
Visibility—
Dew point56°
Sat, 1571° / 59°0.13
71 °
Apple Canyon Lake, Saturday, 15 August
Light rain. High 71°, low 59°.
Pressure30.15 inHg
Wind16.3 mph SE
Humidity73%
Visibility—
Dew point60°
Sun, 1674° / 66°0.09
74 °
Apple Canyon Lake, Sunday, 16 August
Light rain. High 74°, low 66°.
Pressure30.06 inHg
Wind13.1 mph NW
Humidity75%
Visibility—
Dew point64°
Mon, 1777° / 57°0
77 °
Apple Canyon Lake, Monday, 17 August
Overcast. High 77°, low 57°.
Pressure30.12 inHg
Wind5.1 mph SW
Humidity64%
Visibility—
Dew point59°
Tue, 1879° / 60°0
79 °
Apple Canyon Lake, Tuesday, 18 August
Overcast. High 79°, low 60°.
Pressure29.85 inHg
Wind9.8 mph S
Humidity67%
Visibility—
Dew point62°
Wed, 1971° / 61°0.01
71 °
Apple Canyon Lake, Wednesday, 19 August
Light rain. High 71°, low 61°.
Pressure29.88 inHg
Wind13.5 mph NW
Humidity75%
Visibility—
Dew point62°
Thu, 2078° / 60°0.01
78 °
Apple Canyon Lake, Thursday, 20 August
Light rain. High 78°, low 60°.
Pressure29.91 inHg
Wind8.7 mph NW
Humidity62%
Visibility—
Dew point60°
Fri, 2182° / 61°0.08
82 °
Apple Canyon Lake, Friday, 21 August
Light rain. High 82°, low 61°.
Pressure29.74 inHg
Wind17.3 mph S
Humidity66%
Visibility—
Dew point63°
Sat, 2279° / 62°0.02
79 °
Apple Canyon Lake, Saturday, 22 August
Light rain. High 79°, low 62°.
Pressure29.85 inHg
Wind15.8 mph NW
Humidity56%
Visibility—
Dew point59°
Sun, 2378° / 56°0
78 °
Apple Canyon Lake, Sunday, 23 August
Clear. High 78°, low 56°.
Pressure30.15 inHg
Wind6.9 mph NW
Humidity54%
Visibility—
Dew point55°
Mon, 2480° / 60°0
80 °
Apple Canyon Lake, Monday, 24 August
Clear. High 80°, low 60°.
Pressure30.18 inHg
Wind9 mph SW
Humidity59%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 64°0.1
80 °
Apple Canyon Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.1 in
Chance of precipitation22%
Record high92° (2003)
Record low52° (2025)
Wed, 2680° / 64°0.16
80 °
Apple Canyon Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.16 in
Chance of precipitation33%
Record high94° (2003)
Record low50° (1964)
Thu, 2780° / 65°0.12
80 °
Apple Canyon Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.12 in
Chance of precipitation28%
Record high94° (2024)
Record low51° (1968)
Fri, 2880° / 64°0.17
80 °
Apple Canyon Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.17 in
Chance of precipitation33%
Record high95° (1984)
Record low46° (1986)
Sat, 2980° / 63°0.15
80 °
Apple Canyon Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.15 in
Chance of precipitation32%
Record high94° (1984)
Record low47° (1965)
Sun, 3079° / 63°0.06
79 °
Apple Canyon Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.06 in
Chance of precipitation25%
Record high94° (2013)
Record low52° (1974)
Mon, 3178° / 62°0.07
78 °
Apple Canyon Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.07 in
Chance of precipitation20%
Record high92° (2000)
Record low47° (2009)
Tue, 0178° / 62°0.09
78 °
Apple Canyon Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.09 in
Chance of precipitation27%
Record high92° (2011)
Record low48° (1967)
Wed, 0278° / 62°0.06
78 °
Apple Canyon Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.06 in
Chance of precipitation22%
Record high91° (1960)
Record low49° (1974)
Thu, 0378° / 62°0.12
78 °
Apple Canyon Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.12 in
Chance of precipitation35%
Record high93° (2023)
Record low47° (1974)
Fri, 0477° / 61°0.09
77 °
Apple Canyon Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (2023)
Record low45° (2025)
Sat, 0577° / 60°0.07
77 °
Apple Canyon Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.07 in
Chance of precipitation22%
Record high89° (2023)
Record low48° (1962)
Sun, 0677° / 60°0.08
77 °
Apple Canyon Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.08 in
Chance of precipitation27%
Record high92° (1990)
Record low46° (1962)
Mon, 0777° / 60°0.14
77 °
Apple Canyon Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high77°
Average low60°
Average precipitation0.14 in
Chance of precipitation27%
Record high91° (1960)
Record low44° (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 Apple Canyon Lake, 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 Apple Canyon Lake, 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.