Monthly outlook for Sun Down, IN: average high 80.5°, average low 65.3°. That is 1.1° below the climate normal for August. Precipitation is expected on 8 days (about 1.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 9 August (93.7°), the coolest 23 August (52.2°).
80.5°/65.3°
Average high / low
−1.1°
Below normal
8 / 5
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
81.7°
82.4°
-0.4°
18 August – 27 August
78.4°
82.5°
-2.3°
28 August – 6 September
at normal
80.9°
—
August records over 66 years
98.8°17 August 1988All-time high
46°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Indianapolis (9 mi).
Sun, 0994° / 71°0.13
94 °
Sun Down, Sunday, 9 August
Rain. High 94°, low 71°.
Pressure30.03 inHg
Wind9.6 mph S
Humidity72%
Visibility6.2 mi
Dew point73°
Mon, 1090° / 73°0.01
90 °
Sun Down, Monday, 10 August
Light rain. High 90°, low 73°.
Pressure30.00 inHg
Wind11.7 mph SW
Humidity67%
Visibility6.2 mi
Dew point73°
Tue, 1191° / 76°0.06
91 °
Sun Down, Tuesday, 11 August
Light rain. High 91°, low 76°.
Pressure29.91 inHg
Wind11.5 mph SW
Humidity63%
Visibility6.2 mi
Dew point72°
Wed, 1289° / 69°0.15
89 °
Sun Down, Wednesday, 12 August
Light rain. High 89°, low 69°.
Pressure29.80 inHg
Wind3.2 mph W
Humidity68%
Visibility6.2 mi
Dew point73°
Thu, 1374° / 66°0.67
74 °
Sun Down, Thursday, 13 August
Rain. High 74°, low 66°.
Pressure29.88 inHg
Wind10.7 mph NE
Humidity95%
Visibility—
Dew point69°
Fri, 1472° / 59°0
72 °
Sun Down, Friday, 14 August
Clear. High 72°, low 59°.
Pressure30.15 inHg
Wind11.6 mph NE
Humidity57%
Visibility—
Dew point54°
Sat, 1573° / 54°0
73 °
Sun Down, Saturday, 15 August
Overcast. High 73°, low 54°.
Pressure30.33 inHg
Wind5.6 mph E
Humidity55%
Visibility—
Dew point53°
Sun, 1676° / 56°0
76 °
Sun Down, Sunday, 16 August
Partly cloudy. High 76°, low 56°.
Pressure30.24 inHg
Wind6.5 mph SE
Humidity59%
Visibility—
Dew point57°
Mon, 1773° / 62°0.11
73 °
Sun Down, Monday, 17 August
Light rain. High 73°, low 62°.
Pressure30.06 inHg
Wind7.2 mph SE
Humidity79%
Visibility—
Dew point64°
Tue, 1881° / 70°0.25
81 °
Sun Down, Tuesday, 18 August
Light rain. High 81°, low 70°.
Pressure29.97 inHg
Wind7.7 mph NE
Humidity78%
Visibility—
Dew point71°
Wed, 1982° / 67°0
82 °
Sun Down, Wednesday, 19 August
Overcast. High 82°, low 67°.
Pressure29.97 inHg
Wind5.8 mph SE
Humidity65%
Visibility—
Dew point66°
Thu, 2081° / 69°0.3
81 °
Sun Down, Thursday, 20 August
Light rain. High 81°, low 69°.
Pressure29.88 inHg
Wind8 mph W
Humidity74%
Visibility—
Dew point70°
Fri, 2177° / 65°0
77 °
Sun Down, Friday, 21 August
Overcast. High 77°, low 65°.
Pressure29.91 inHg
Wind8.2 mph NE
Humidity70%
Visibility—
Dew point65°
Sat, 2281° / 63°0.02
81 °
Sun Down, Saturday, 22 August
Light rain. High 81°, low 63°.
Pressure29.91 inHg
Wind13.8 mph NE
Humidity52%
Visibility—
Dew point60°
Sun, 2368° / 52°0
68 °
Sun Down, Sunday, 23 August
Mostly clear. High 68°, low 52°.
Pressure30.18 inHg
Wind12.4 mph NE
Humidity52%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 65°0.07
82 °
Sun Down, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation27%
Record high95° (2011)
Record low55° (1987)
Tue, 2583° / 65°0.06
83 °
Sun Down, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.06 in
Chance of precipitation28%
Record high92° (2020)
Record low55° (1984)
Wed, 2683° / 66°0.11
83 °
Sun Down, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.11 in
Chance of precipitation37%
Record high91° (2020)
Record low55° (1963)
Thu, 2783° / 66°0.1
83 °
Sun Down, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.1 in
Chance of precipitation33%
Record high94° (2024)
Record low54° (1968)
Fri, 2883° / 66°0.18
83 °
Sun Down, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.18 in
Chance of precipitation38%
Record high92° (1990)
Record low50° (1986)
Sat, 2982° / 65°0.12
82 °
Sun Down, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.12 in
Chance of precipitation33%
Record high93° (2007)
Record low46° (1986)
Sun, 3081° / 65°0.13
81 °
Sun Down, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.13 in
Chance of precipitation30%
Record high94° (2024)
Record low50° (1986)
Mon, 3181° / 64°0.05
81 °
Sun Down, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.05 in
Chance of precipitation32%
Record high92° (2013)
Record low52° (2009)
Tue, 0181° / 64°0.14
81 °
Sun Down, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.14 in
Chance of precipitation18%
Record high97° (2011)
Record low50° (1967)
Wed, 0281° / 65°0.16
81 °
Sun Down, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.16 in
Chance of precipitation28%
Record high98° (2011)
Record low51° (1967)
Thu, 0381° / 64°0.1
81 °
Sun Down, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.1 in
Chance of precipitation28%
Record high95° (2011)
Record low50° (1974)
Fri, 0480° / 64°0.07
80 °
Sun Down, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.07 in
Chance of precipitation27%
Record high93° (2007)
Record low50° (1997)
Sat, 0580° / 63°0.05
80 °
Sun Down, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.05 in
Chance of precipitation27%
Record high96° (2007)
Record low49° (1997)
Sun, 0680° / 63°0.04
80 °
Sun Down, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.04 in
Chance of precipitation20%
Record high92° (1998)
Record low49° (1962)
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 Sun Down, 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 Sun Down, 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.