Monthly outlook for Louisville, MS: average high 98.3°, average low 74.2°. That is 4.9° above the climate normal for August. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 7 days and 2.0 inches. The warmest day looks like 19 August (107.1°), the coolest 24 August (69.9°).
98.3°/74.2°
Average high / low
+4.9°
Above normal
4 / 7
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
97.5°
89.3°
+4.5°
19 August – 28 August
99.7°
89.5°
+5.7°
29 August – 7 September
at normal
87.2°
—
August records over 66 years
103.1°29 August 2000All-time high
57.4°29 August 1992All-time low
Mon, 1094° / 72°0
94 °
Louisville, Monday, 10 August
Overcast. High 94°, low 72°.
Pressure30.09 inHg
Wind4.8 mph SW
Humidity45%
Visibility6.2 mi
Dew point69°
Tue, 1195° / 73°0.06
95 °
Louisville, Tuesday, 11 August
Light rain. High 95°, low 73°.
Pressure30.06 inHg
Wind6.6 mph SW
Humidity48%
Visibility6.2 mi
Dew point70°
Wed, 1294° / 76°0
94 °
Louisville, Wednesday, 12 August
Overcast. High 94°, low 76°.
Pressure30.03 inHg
Wind7.5 mph W
Humidity51%
Visibility6.2 mi
Dew point70°
Thu, 1395° / 77°0
95 °
Louisville, Thursday, 13 August
Overcast. High 95°, low 77°.
Pressure30.03 inHg
Wind5.9 mph W
Humidity48%
Visibility6.2 mi
Dew point70°
Fri, 1499° / 76°0
99 °
Louisville, Friday, 14 August
Mostly clear. High 99°, low 76°.
Pressure30.06 inHg
Wind8.6 mph W
Humidity37%
Visibility—
Dew point64°
Sat, 15101° / 73°0
101 °
Louisville, Saturday, 15 August
Mostly clear. High 101°, low 73°.
Pressure30.12 inHg
Wind6.9 mph W
Humidity31%
Visibility—
Dew point60°
Sun, 16102° / 75°0
102 °
Louisville, Sunday, 16 August
Overcast. High 102°, low 75°.
Pressure30.09 inHg
Wind8 mph W
Humidity29%
Visibility—
Dew point59°
Mon, 17103° / 76°0
103 °
Louisville, Monday, 17 August
Clear. High 103°, low 76°.
Pressure30.03 inHg
Wind8.3 mph W
Humidity31%
Visibility—
Dew point61°
Tue, 18102° / 78°0
102 °
Louisville, Tuesday, 18 August
Clear. High 102°, low 78°.
Pressure30.03 inHg
Wind6.9 mph W
Humidity31%
Visibility—
Dew point63°
Wed, 19107° / 78°0
107 °
Louisville, Wednesday, 19 August
Clear. High 107°, low 78°.
Pressure30.00 inHg
Wind7.9 mph S
Humidity27%
Visibility—
Dew point61°
Thu, 20104° / 75°0
104 °
Louisville, Thursday, 20 August
Overcast. High 104°, low 75°.
Pressure29.97 inHg
Wind6.5 mph S
Humidity33%
Visibility—
Dew point64°
Fri, 21100° / 74°0.13
100 °
Louisville, Friday, 21 August
Light rain. High 100°, low 74°.
Pressure29.94 inHg
Wind9.1 mph W
Humidity38%
Visibility—
Dew point65°
Sat, 22100° / 74°0.15
100 °
Louisville, Saturday, 22 August
Rain. High 100°, low 74°.
Pressure29.94 inHg
Wind17.6 mph S
Humidity38%
Visibility—
Dew point65°
Sun, 2394° / 70°0.92
94 °
Louisville, Sunday, 23 August
Heavy rain. High 94°, low 70°.
Pressure30.00 inHg
Wind12.5 mph SW
Humidity46%
Visibility—
Dew point67°
Mon, 2493° / 70°0
93 °
Louisville, Monday, 24 August
Partly cloudy. High 93°, low 70°.
Pressure30.09 inHg
Wind7.2 mph SW
Humidity44%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2589° / 72°0.1
89 °
Louisville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high89°
Average low72°
Average precipitation0.1 in
Chance of precipitation37%
Record high100° (2023)
Record low62° (1997)
Wed, 2690° / 72°0.06
90 °
Louisville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high90°
Average low72°
Average precipitation0.06 in
Chance of precipitation35%
Record high101° (2023)
Record low61° (1966)
Thu, 2789° / 72°0.12
89 °
Louisville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high89°
Average low72°
Average precipitation0.12 in
Chance of precipitation32%
Record high99° (2000)
Record low62° (1966)
Fri, 2888° / 71°0.11
88 °
Louisville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.11 in
Chance of precipitation38%
Record high100° (2000)
Record low62° (1968)
Sat, 2988° / 71°0.15
88 °
Louisville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.15 in
Chance of precipitation45%
Record high103° (2000)
Record low57° (1992)
Sun, 3087° / 71°0.19
87 °
Louisville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.19 in
Chance of precipitation43%
Record high97° (2000)
Record low60° (1992)
Mon, 3188° / 71°0.09
88 °
Louisville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.09 in
Chance of precipitation27%
Record high101° (2000)
Record low60° (1986)
Tue, 0188° / 71°0.08
88 °
Louisville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high88°
Average low71°
Average precipitation0.08 in
Chance of precipitation27%
Record high96° (2000)
Record low62° (1968)
Wed, 0287° / 71°0.1
87 °
Louisville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.1 in
Chance of precipitation42%
Record high97° (1962)
Record low60° (1967)
Thu, 0387° / 71°0.16
87 °
Louisville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high87°
Average low71°
Average precipitation0.16 in
Chance of precipitation42%
Record high96° (1990)
Record low64° (2017)
Fri, 0487° / 70°0.13
87 °
Louisville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.13 in
Chance of precipitation32%
Record high100° (1990)
Record low56° (1974)
Sat, 0587° / 70°0.2
87 °
Louisville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high87°
Average low70°
Average precipitation0.2 in
Chance of precipitation40%
Record high96° (1990)
Record low58° (1974)
Sun, 0686° / 70°0.14
86 °
Louisville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high86°
Average low70°
Average precipitation0.14 in
Chance of precipitation38%
Record high95° (2002)
Record low59° (2011)
Mon, 0786° / 69°0.06
86 °
Louisville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.06 in
Chance of precipitation22%
Record high96° (2019)
Record low55° (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, MS 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, MS 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.