Monthly outlook for Little Saint Louis, IN: average high 94.2°, average low 72°. That is 5.3° above the climate normal for August. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 18 August (100.9°), the coolest 23 August (64.6°).
94.2°/72°
Average high / low
+5.3°
Above normal
4 / 5
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
93.5°
84.7°
+4.9°
19 August – 28 August
95.3°
85°
+5.8°
29 August – 7 September
at normal
83.1°
—
August records over 66 years
102.2°15 August 2007All-time high
51.3°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Leavenworth (9 mi).
Mon, 1094° / 72°0
94 °
Little Saint Louis, Monday, 10 August
Clear. High 94°, low 72°.
Pressure30.03 inHg
Wind12.6 mph SW
Humidity53%
Visibility6.2 mi
Dew point70°
Tue, 1195° / 74°0.02
95 °
Little Saint Louis, Tuesday, 11 August
Light rain. High 95°, low 74°.
Pressure30.00 inHg
Wind5.6 mph W
Humidity58%
Visibility6.2 mi
Dew point70°
Wed, 1292° / 75°0.07
92 °
Little Saint Louis, Wednesday, 12 August
Light rain. High 92°, low 75°.
Pressure29.85 inHg
Wind8.8 mph W
Humidity57%
Visibility6.2 mi
Dew point70°
Thu, 1389° / 70°0.11
89 °
Little Saint Louis, Thursday, 13 August
Light rain. High 89°, low 70°.
Pressure29.97 inHg
Wind4.3 mph SW
Humidity67%
Visibility6.2 mi
Dew point72°
Fri, 1492° / 73°0
92 °
Little Saint Louis, Friday, 14 August
Light rain. High 92°, low 73°.
Pressure29.97 inHg
Wind5.6 mph SW
Humidity51%
Visibility—
Dew point69°
Sat, 1598° / 75°0
98 °
Little Saint Louis, Saturday, 15 August
Clear. High 98°, low 75°.
Pressure30.03 inHg
Wind12.8 mph SW
Humidity36%
Visibility—
Dew point64°
Sun, 1696° / 75°0.05
96 °
Little Saint Louis, Sunday, 16 August
Light rain. High 96°, low 75°.
Pressure29.94 inHg
Wind14.9 mph W
Humidity36%
Visibility—
Dew point63°
Mon, 1790° / 68°0.08
90 °
Little Saint Louis, Monday, 17 August
Light rain. High 90°, low 68°.
Pressure30.00 inHg
Wind7.7 mph NE
Humidity60%
Visibility—
Dew point66°
Tue, 18101° / 76°0
101 °
Little Saint Louis, Tuesday, 18 August
Partly cloudy. High 101°, low 76°.
Pressure29.91 inHg
Wind15.4 mph W
Humidity27%
Visibility—
Dew point58°
Wed, 1997° / 76°0
97 °
Little Saint Louis, Wednesday, 19 August
Partly cloudy. High 97°, low 76°.
Pressure30.00 inHg
Wind7.7 mph W
Humidity35%
Visibility—
Dew point62°
Thu, 2099° / 75°0
99 °
Little Saint Louis, Thursday, 20 August
Overcast. High 99°, low 75°.
Pressure29.88 inHg
Wind12.3 mph SW
Humidity39%
Visibility—
Dew point65°
Fri, 2196° / 70°0.02
96 °
Little Saint Louis, Friday, 21 August
Light rain. High 96°, low 70°.
Pressure29.83 inHg
Wind12 mph SW
Humidity39%
Visibility—
Dew point62°
Sat, 2291° / 70°0.02
91 °
Little Saint Louis, Saturday, 22 August
Light rain. High 91°, low 70°.
Pressure29.91 inHg
Wind10.4 mph NE
Humidity44%
Visibility—
Dew point62°
Sun, 2392° / 65°0
92 °
Little Saint Louis, Sunday, 23 August
Clear. High 92°, low 65°.
Pressure29.97 inHg
Wind6.4 mph NE
Humidity40%
Visibility—
Dew point60°
Mon, 2496° / 69°0
96 °
Little Saint Louis, Monday, 24 August
Clear. High 96°, low 69°.
Pressure30.00 inHg
Wind7.1 mph W
Humidity31%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 68°0.06
85 °
Little Saint Louis, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.06 in
Chance of precipitation30%
Record high99° (2023)
Record low58° (2025)
Wed, 2685° / 68°0.07
85 °
Little Saint Louis, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.07 in
Chance of precipitation28%
Record high96° (1983)
Record low55° (2025)
Thu, 2785° / 69°0.1
85 °
Little Saint Louis, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.1 in
Chance of precipitation30%
Record high94° (2024)
Record low53° (2025)
Fri, 2885° / 68°0.09
85 °
Little Saint Louis, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.09 in
Chance of precipitation28%
Record high96° (2007)
Record low55° (1986)
Sat, 2985° / 68°0.1
85 °
Little Saint Louis, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.1 in
Chance of precipitation38%
Record high96° (2024)
Record low51° (1986)
Sun, 3084° / 67°0.14
84 °
Little Saint Louis, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.14 in
Chance of precipitation32%
Record high95° (2013)
Record low52° (1986)
Mon, 3184° / 67°0.11
84 °
Little Saint Louis, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.11 in
Chance of precipitation40%
Record high95° (1995)
Record low57° (2009)
Tue, 0184° / 67°0.11
84 °
Little Saint Louis, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.11 in
Chance of precipitation33%
Record high97° (2011)
Record low53° (1967)
Wed, 0283° / 67°0.14
83 °
Little Saint Louis, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.14 in
Chance of precipitation35%
Record high97° (2011)
Record low54° (2017)
Thu, 0383° / 67°0.1
83 °
Little Saint Louis, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.1 in
Chance of precipitation30%
Record high99° (2011)
Record low54° (1974)
Fri, 0483° / 66°0.07
83 °
Little Saint Louis, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.07 in
Chance of precipitation25%
Record high97° (1999)
Record low54° (1974)
Sat, 0582° / 65°0.11
82 °
Little Saint Louis, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation33%
Record high96° (1999)
Record low54° (1974)
Sun, 0683° / 65°0.02
83 °
Little Saint Louis, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.02 in
Chance of precipitation17%
Record high96° (1998)
Record low54° (2017)
Mon, 0782° / 65°0.04
82 °
Little Saint Louis, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.04 in
Chance of precipitation13%
Record high97° (1990)
Record low51° (2017)
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 Little Saint Louis, 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 Little Saint Louis, 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.