Monthly outlook for Louisville, KY: average high 92.8°, average low 73.4°. That is 4.4° above the climate normal for August. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 23 August (106.5°), the coolest 16 August (65.1°).
92.8°/73.4°
Average high / low
+4.4°
Above normal
5 / 5
Wet days / normal
1.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87.9°
84.8°
+1.7°
19 August – 28 August
101°
85.1°
+8.9°
29 August – 7 September
at normal
83.4°
—
August records over 66 years
101.5°15 August 2007All-time high
48.4°29 August 1986All-time low
Mon, 1095° / 77°0
95 °
Louisville, Monday, 10 August
Clear. High 95°, low 77°.
Pressure30.03 inHg
Wind8.9 mph SW
Humidity51%
Visibility6.2 mi
Dew point69°
Tue, 1197° / 77°0
97 °
Louisville, Tuesday, 11 August
Overcast. High 97°, low 77°.
Pressure29.97 inHg
Wind11.4 mph SW
Humidity51%
Visibility6.2 mi
Dew point69°
Wed, 1292° / 72°0.81
92 °
Louisville, Wednesday, 12 August
Heavy rain. High 92°, low 72°.
Pressure29.83 inHg
Wind10.6 mph SW
Humidity48%
Visibility6.2 mi
Dew point68°
Thu, 1388° / 71°0.22
88 °
Louisville, Thursday, 13 August
Rain. High 88°, low 71°.
Pressure29.94 inHg
Wind7.3 mph NE
Humidity54%
Visibility—
Dew point66°
Fri, 1474° / 66°0.19
74 °
Louisville, Friday, 14 August
Light rain. High 74°, low 66°.
Pressure30.09 inHg
Wind9.5 mph NE
Humidity86%
Visibility—
Dew point65°
Sat, 1579° / 65°0.08
79 °
Louisville, Saturday, 15 August
Light rain. High 79°, low 65°.
Pressure30.21 inHg
Wind8.7 mph E
Humidity67%
Visibility—
Dew point63°
Sun, 1686° / 65°0.05
86 °
Louisville, Sunday, 16 August
Light rain. High 86°, low 65°.
Pressure30.06 inHg
Wind5.7 mph E
Humidity61%
Visibility—
Dew point65°
Mon, 1787° / 69°0
87 °
Louisville, Monday, 17 August
Mostly clear. High 87°, low 69°.
Pressure30.03 inHg
Wind6.5 mph NE
Humidity54%
Visibility—
Dew point64°
Tue, 1887° / 69°0
87 °
Louisville, Tuesday, 18 August
Clear. High 87°, low 69°.
Pressure30.03 inHg
Wind4.9 mph E
Humidity46%
Visibility—
Dew point61°
Wed, 1991° / 70°0
91 °
Louisville, Wednesday, 19 August
Clear. High 91°, low 70°.
Pressure30.03 inHg
Wind8.4 mph S
Humidity37%
Visibility—
Dew point59°
Thu, 20100° / 76°0
100 °
Louisville, Thursday, 20 August
Overcast. High 100°, low 76°.
Pressure29.91 inHg
Wind8.9 mph SW
Humidity43%
Visibility—
Dew point67°
Fri, 21105° / 82°0
105 °
Louisville, Friday, 21 August
Overcast. High 105°, low 82°.
Pressure29.83 inHg
Wind10.1 mph W
Humidity27%
Visibility—
Dew point60°
Sat, 22102° / 79°0
102 °
Louisville, Saturday, 22 August
Overcast. High 102°, low 79°.
Pressure29.88 inHg
Wind5.2 mph NE
Humidity44%
Visibility—
Dew point71°
Sun, 23107° / 83°0
107 °
Louisville, Sunday, 23 August
Clear. High 107°, low 83°.
Pressure29.88 inHg
Wind4.4 mph W
Humidity31%
Visibility—
Dew point65°
Mon, 24101° / 82°0
101 °
Louisville, Monday, 24 August
Overcast. High 101°, low 82°.
Pressure29.97 inHg
Wind4.6 mph S
Humidity40%
Visibility—
Dew point68°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 66°0.06
85 °
Louisville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low66°
Average precipitation0.06 in
Chance of precipitation23%
Record high96° (2023)
Record low56° (2015)
Wed, 2685° / 67°0.08
85 °
Louisville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.08 in
Chance of precipitation30%
Record high96° (1983)
Record low56° (2025)
Thu, 2785° / 68°0.09
85 °
Louisville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.09 in
Chance of precipitation32%
Record high95° (1965)
Record low53° (2025)
Fri, 2885° / 67°0.1
85 °
Louisville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.1 in
Chance of precipitation27%
Record high97° (2007)
Record low54° (2025)
Sat, 2985° / 67°0.11
85 °
Louisville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low67°
Average precipitation0.11 in
Chance of precipitation37%
Record high95° (2024)
Record low48° (1986)
Sun, 3084° / 66°0.13
84 °
Louisville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.13 in
Chance of precipitation32%
Record high95° (2024)
Record low50° (1986)
Mon, 3184° / 66°0.14
84 °
Louisville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.14 in
Chance of precipitation40%
Record high94° (2013)
Record low54° (2009)
Tue, 0184° / 66°0.15
84 °
Louisville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low66°
Average precipitation0.15 in
Chance of precipitation28%
Record high97° (2011)
Record low52° (1967)
Wed, 0283° / 66°0.13
83 °
Louisville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.13 in
Chance of precipitation35%
Record high97° (2011)
Record low51° (1967)
Thu, 0383° / 65°0.09
83 °
Louisville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.09 in
Chance of precipitation33%
Record high99° (2011)
Record low54° (1967)
Fri, 0483° / 65°0.07
83 °
Louisville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.07 in
Chance of precipitation23%
Record high96° (1999)
Record low52° (1997)
Sat, 0582° / 64°0.12
82 °
Louisville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.12 in
Chance of precipitation32%
Record high96° (2007)
Record low51° (1997)
Sun, 0683° / 64°0.02
83 °
Louisville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0.02 in
Chance of precipitation13%
Record high96° (1998)
Record low52° (1984)
Mon, 0782° / 64°0.04
82 °
Louisville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.04 in
Chance of precipitation18%
Record high97° (1990)
Record low47° (1988)
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 Louisville, KY 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 Louisville, KY 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.