Monthly outlook for Van Loon, IN: average high 77.9°, average low 65.6°. That is 1.2° below the climate normal for August. Precipitation is expected on 6 days (about 2.9 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 11 August (84.5°), the coolest 23 August (53.1°).
77.9°/65.6°
Average high / low
−1.2°
Below normal
6 / 6
Wet days / normal
2.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
78.8°
80.2°
-0.8°
18 August – 27 August
76.4°
80.1°
-2°
28 August – 6 September
at normal
78.6°
—
August records over 66 years
98.1°24 August 2023All-time high
49.3°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Calumet Park (14 mi).
Sun, 0983° / 66°1.89
83 °
Van Loon, Sunday, 9 August
Heavy rain. High 83°, low 66°.
Pressure29.94 inHg
Wind8.9 mph S
Humidity70%
Visibility6.2 mi
Dew point72°
Mon, 1083° / 73°0.12
83 °
Van Loon, Monday, 10 August
Rain. High 83°, low 73°.
Pressure29.91 inHg
Wind4.6 mph SE
Humidity77%
Visibility6.2 mi
Dew point72°
Tue, 1184° / 73°0.26
84 °
Van Loon, Tuesday, 11 August
Rain. High 84°, low 73°.
Pressure29.80 inHg
Wind15.9 mph S
Humidity69%
Visibility6.2 mi
Dew point72°
Wed, 1281° / 70°0.02
81 °
Van Loon, Wednesday, 12 August
Light rain. High 81°, low 70°.
Pressure29.85 inHg
Wind6.6 mph N
Humidity68%
Visibility6.2 mi
Dew point65°
Thu, 1371° / 66°0.02
71 °
Van Loon, Thursday, 13 August
Light rain. High 71°, low 66°.
Pressure29.94 inHg
Wind11.6 mph NE
Humidity68%
Visibility—
Dew point59°
Fri, 1472° / 62°0
72 °
Van Loon, Friday, 14 August
Clear. High 72°, low 62°.
Pressure30.18 inHg
Wind10.3 mph NE
Humidity52%
Visibility—
Dew point52°
Sat, 1576° / 59°0
76 °
Van Loon, Saturday, 15 August
Overcast. High 76°, low 59°.
Pressure30.33 inHg
Wind6.5 mph SE
Humidity47%
Visibility—
Dew point51°
Sun, 1679° / 59°0
79 °
Van Loon, Sunday, 16 August
Mostly clear. High 79°, low 59°.
Pressure30.21 inHg
Wind9.9 mph S
Humidity49%
Visibility—
Dew point55°
Mon, 1776° / 68°0.1
76 °
Van Loon, Monday, 17 August
Light rain. High 76°, low 68°.
Pressure30.00 inHg
Wind7 mph S
Humidity89%
Visibility—
Dew point68°
Tue, 1880° / 68°0
80 °
Van Loon, Tuesday, 18 August
Partly cloudy. High 80°, low 68°.
Pressure30.03 inHg
Wind9.1 mph N
Humidity63%
Visibility—
Dew point65°
Wed, 1984° / 66°0.42
84 °
Van Loon, Wednesday, 19 August
Rain. High 84°, low 66°.
Pressure29.91 inHg
Wind7.9 mph S
Humidity58%
Visibility—
Dew point65°
Thu, 2077° / 68°0.1
77 °
Van Loon, Thursday, 20 August
Light rain. High 77°, low 68°.
Pressure29.88 inHg
Wind9.8 mph N
Humidity70%
Visibility—
Dew point66°
Fri, 2176° / 66°0
76 °
Van Loon, Friday, 21 August
Partly cloudy. High 76°, low 66°.
Pressure29.97 inHg
Wind9.6 mph N
Humidity62%
Visibility—
Dew point61°
Sat, 2277° / 63°0
77 °
Van Loon, Saturday, 22 August
Light rain. High 77°, low 63°.
Pressure29.91 inHg
Wind16.1 mph N
Humidity65%
Visibility—
Dew point63°
Sun, 2365° / 53°0
65 °
Van Loon, Sunday, 23 August
Mostly clear. High 65°, low 53°.
Pressure30.24 inHg
Wind13.8 mph NE
Humidity47%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2480° / 66°0.14
80 °
Van Loon, Monday, 24 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.14 in
Chance of precipitation28%
Record high98° (2023)
Record low57° (1966)
Tue, 2580° / 66°0.07
80 °
Van Loon, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.07 in
Chance of precipitation27%
Record high92° (2021)
Record low53° (2017)
Wed, 2681° / 67°0.17
81 °
Van Loon, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.17 in
Chance of precipitation35%
Record high94° (2024)
Record low54° (2025)
Thu, 2781° / 67°0.14
81 °
Van Loon, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.14 in
Chance of precipitation37%
Record high96° (2024)
Record low54° (2025)
Fri, 2880° / 67°0.15
80 °
Van Loon, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low67°
Average precipitation0.15 in
Chance of precipitation37%
Record high92° (1984)
Record low51° (1986)
Sat, 2980° / 66°0.1
80 °
Van Loon, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.1 in
Chance of precipitation28%
Record high93° (1984)
Record low49° (1965)
Sun, 3079° / 66°0.09
79 °
Van Loon, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low66°
Average precipitation0.09 in
Chance of precipitation30%
Record high92° (2013)
Record low54° (1986)
Mon, 3179° / 65°0.06
79 °
Van Loon, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.06 in
Chance of precipitation23%
Record high89° (2012)
Record low55° (2023)
Tue, 0179° / 65°0.13
79 °
Van Loon, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.13 in
Chance of precipitation30%
Record high94° (2011)
Record low54° (1967)
Wed, 0279° / 65°0.06
79 °
Van Loon, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.06 in
Chance of precipitation27%
Record high92° (2011)
Record low52° (1965)
Thu, 0379° / 65°0.07
79 °
Van Loon, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.07 in
Chance of precipitation23%
Record high93° (2023)
Record low53° (1974)
Fri, 0478° / 64°0.09
78 °
Van Loon, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.09 in
Chance of precipitation33%
Record high91° (2023)
Record low50° (2025)
Sat, 0578° / 64°0.07
78 °
Van Loon, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low64°
Average precipitation0.07 in
Chance of precipitation27%
Record high90° (2023)
Record low53° (2010)
Sun, 0677° / 64°0.1
77 °
Van Loon, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low64°
Average precipitation0.1 in
Chance of precipitation37%
Record high91° (1990)
Record low49° (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 Van Loon, IN 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 Van Loon, IN 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.