Monthly outlook for Camp Algonquin, IL: average high 77°, average low 61.4°. That is 1.6° below the climate normal for August. Precipitation is expected on 6 days (about 2.4 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 9 August (84.3°), the coolest 23 August (50.9°).
77°/61.4°
Average high / low
−1.6°
Below normal
6 / 6
Wet days / normal
2.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
78.3°
80°
-1°
18 August – 27 August
74.8°
79.9°
-2.8°
28 August – 6 September
at normal
78.3°
—
August records over 66 years
98.1°24 August 2023All-time high
46.4°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Elgin (10 mi).
Sun, 0984° / 64°1.27
84 °
Camp Algonquin, Sunday, 9 August
Heavy rain. High 84°, low 64°.
Pressure29.91 inHg
Wind7.3 mph SE
Humidity94%
Visibility6.2 mi
Dew point62°
Mon, 1083° / 70°0.15
83 °
Camp Algonquin, Monday, 10 August
Rain. High 83°, low 70°.
Pressure29.88 inHg
Wind7.6 mph SE
Humidity83%
Visibility6.2 mi
Dew point72°
Tue, 1180° / 69°0.54
80 °
Camp Algonquin, Tuesday, 11 August
Heavy rain. High 80°, low 69°.
Pressure29.83 inHg
Wind7.6 mph NW
Humidity91%
Visibility5.2 mi
Dew point73°
Wed, 1283° / 64°0
83 °
Camp Algonquin, Wednesday, 12 August
Light rain. High 83°, low 64°.
Pressure29.88 inHg
Wind2.9 mph NW
Humidity74%
Visibility6.2 mi
Dew point67°
Thu, 1369° / 58°0.06
69 °
Camp Algonquin, Thursday, 13 August
Light rain. High 69°, low 58°.
Pressure29.97 inHg
Wind11.9 mph NE
Humidity78%
Visibility—
Dew point61°
Fri, 1473° / 55°0
73 °
Camp Algonquin, Friday, 14 August
Clear. High 73°, low 55°.
Pressure30.18 inHg
Wind7.6 mph E
Humidity55%
Visibility—
Dew point53°
Sat, 1573° / 55°0
73 °
Camp Algonquin, Saturday, 15 August
Overcast. High 73°, low 55°.
Pressure30.33 inHg
Wind6.7 mph SW
Humidity58%
Visibility—
Dew point55°
Sun, 1675° / 57°0
75 °
Camp Algonquin, Sunday, 16 August
Partly cloudy. High 75°, low 57°.
Pressure30.18 inHg
Wind11.8 mph S
Humidity64%
Visibility—
Dew point59°
Mon, 1779° / 64°0.01
79 °
Camp Algonquin, Monday, 17 August
Light rain. High 79°, low 64°.
Pressure30.00 inHg
Wind8.1 mph S
Humidity87%
Visibility—
Dew point66°
Tue, 1881° / 65°0
81 °
Camp Algonquin, Tuesday, 18 August
Overcast. High 81°, low 65°.
Pressure30.03 inHg
Wind8.5 mph NE
Humidity64%
Visibility—
Dew point65°
Wed, 1980° / 64°0.28
80 °
Camp Algonquin, Wednesday, 19 August
Rain. High 80°, low 64°.
Pressure29.91 inHg
Wind10 mph SW
Humidity75%
Visibility—
Dew point69°
Thu, 2074° / 63°0
74 °
Camp Algonquin, Thursday, 20 August
Overcast. High 74°, low 63°.
Pressure29.91 inHg
Wind9.9 mph NE
Humidity74%
Visibility—
Dew point64°
Fri, 2177° / 60°0.01
77 °
Camp Algonquin, Friday, 21 August
Light rain. High 77°, low 60°.
Pressure29.97 inHg
Wind7.4 mph NE
Humidity65%
Visibility—
Dew point62°
Sat, 2270° / 56°0.04
70 °
Camp Algonquin, Saturday, 22 August
Light rain. High 70°, low 56°.
Pressure30.00 inHg
Wind17.9 mph NE
Humidity88%
Visibility—
Dew point60°
Sun, 2366° / 51°0
66 °
Camp Algonquin, Sunday, 23 August
Clear. High 66°, low 51°.
Pressure30.24 inHg
Wind11.8 mph NE
Humidity54%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2480° / 64°0.13
80 °
Camp Algonquin, Monday, 24 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation25%
Record high98° (2023)
Record low54° (1966)
Tue, 2580° / 64°0.08
80 °
Camp Algonquin, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.08 in
Chance of precipitation25%
Record high92° (2003)
Record low53° (2025)
Wed, 2680° / 65°0.16
80 °
Camp Algonquin, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.16 in
Chance of precipitation33%
Record high95° (2024)
Record low51° (2025)
Thu, 2780° / 65°0.11
80 °
Camp Algonquin, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.11 in
Chance of precipitation28%
Record high96° (2024)
Record low53° (2025)
Fri, 2880° / 65°0.13
80 °
Camp Algonquin, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low65°
Average precipitation0.13 in
Chance of precipitation38%
Record high93° (1984)
Record low47° (1986)
Sat, 2980° / 64°0.13
80 °
Camp Algonquin, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation28%
Record high94° (1984)
Record low46° (1986)
Sun, 3079° / 63°0.11
79 °
Camp Algonquin, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.11 in
Chance of precipitation28%
Record high94° (2013)
Record low52° (1986)
Mon, 3179° / 63°0.09
79 °
Camp Algonquin, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.09 in
Chance of precipitation20%
Record high90° (2012)
Record low51° (2009)
Tue, 0178° / 63°0.12
78 °
Camp Algonquin, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.12 in
Chance of precipitation32%
Record high93° (2011)
Record low49° (2009)
Wed, 0278° / 63°0.04
78 °
Camp Algonquin, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.04 in
Chance of precipitation23%
Record high92° (2008)
Record low49° (1967)
Thu, 0378° / 63°0.09
78 °
Camp Algonquin, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.09 in
Chance of precipitation27%
Record high93° (2023)
Record low47° (1974)
Fri, 0477° / 62°0.1
77 °
Camp Algonquin, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low62°
Average precipitation0.1 in
Chance of precipitation32%
Record high92° (2023)
Record low47° (1974)
Sat, 0577° / 61°0.07
77 °
Camp Algonquin, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.07 in
Chance of precipitation20%
Record high89° (2023)
Record low50° (1962)
Sun, 0677° / 61°0.12
77 °
Camp Algonquin, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low61°
Average precipitation0.12 in
Chance of precipitation35%
Record high91° (1990)
Record low48° (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 Camp Algonquin, 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 Camp Algonquin, 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.