38.177°N, 85.731°W · station SDFthr · 155 years of record
99°F
HOTTEST SEP 3 SINCE 2011
forecast high · Sep 3
7-Day Forecast
NWS NDFD forecast high temperature for Louisville.
This Day in History
Every year's high on each of the next 7 forecast dates at Louisville — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#4 / 154
warmest Sep 1 in 154 yrs of record
Warmest Sep 1 ever
103°F
set in 1953
Coolest Sep 1 ever
71°F
set in 1994
Forecast high 97°F — 4th warmest Sep 1 of 154 years · record 103°F (1953) · warmest since 2011.
Ranks
#5 / 154
warmest Sep 2 in 154 yrs of record
Warmest Sep 2 ever
103°F
set in 1953
Coolest Sep 2 ever
65°F
set in 1892
Forecast high 97°F — 5th warmest Sep 2 of 154 years · record 103°F (1953) · warmest since 2011.
Ranks
#2 / 154
warmest Sep 3 in 154 yrs of record
Warmest Sep 3 ever
102°F
set in 2011
Coolest Sep 3 ever
58°F
set in 1974
Forecast high 99°F — 2nd warmest Sep 3 of 154 years · record 102°F (2011) · warmest since 2011.
Ranks
#2 / 154
warmest Sep 4 in 154 yrs of record
Warmest Sep 4 ever
102°F
set in 1954
Coolest Sep 4 ever
64°F
set in 1891
Forecast high 98°F — 2nd warmest Sep 4 of 154 years · record 102°F (1954) · warmest since 2007.
Ranks
#9 / 154
warmest Sep 5 in 154 yrs of record
Warmest Sep 5 ever
104°F
set in 1954
Coolest Sep 5 ever
64°F
set in 1891
Forecast high 94°F — 9th warmest Sep 5 of 154 years · record 104°F (1954) · warmest since 2015.
Ranks
#36 / 154
warmest Sep 6 in 154 yrs of record
Warmest Sep 6 ever
104°F
set in 1954
Coolest Sep 6 ever
66°F
set in 2011
Forecast high 90°F — 36th warmest Sep 6 of 154 years · record 104°F (1954) · warmest since 2024.
Ranks
#39 / 154
warmest Sep 7 in 154 yrs of record
Warmest Sep 7 ever
101°F
set in 1899
Coolest Sep 7 ever
65°F
set in 2011
Forecast high 90°F — 39th warmest Sep 7 of 154 years · record 101°F (1899) · warmest since 2024.
The hottest and coldest ever recorded at Louisville in each calendar month, and for the whole 1872–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
77°FJan 24, 1943
-22°FJan 19, 1994
Feb
82°FFeb 20, 2018
-19°FFeb 2, 1951
Mar
89°FMar 22, 2026
-1°FMar 6, 1960
Apr
91°FApr 30, 1894
21°FApr 17, 1875
May
98°FMay 28, 1911
31°FMay 1, 1963
Jun
105°FJun 29, 2012
42°FJun 1, 1966
Jul
107°FJul 24, 1901
49°FJul 23, 1947
Aug
105°FAug 12, 1881
45°FAug 31, 1946
Sep
104°FSep 5, 1954
33°FSep 30, 1949
Oct
97°FOct 1, 2019
23°FOct 29, 1925
Nov
85°FNov 1, 2016
-1°FNov 25, 1950
Dec
76°FDec 3, 1982
-15°FDec 22, 1989
All-time
107°FJul 24, 1901
-22°FJan 19, 1994
2026 Records So Far
Records set or tied at Louisville so far this year — through Aug 30.
Record Highs in 2026
6 broke
plus 0 tied — daily record highs set this year
Monthly high record this year: Mar (89°F)
Record Lows in 2026
0 broke
plus 0 tied — daily record lows set this year
Record Warm Nights & Cold Days
Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.
Warmest low ever
84°F
record high minimum — the night it never cooled · Aug 19, 1936
Coldest high ever
-2°F
record low maximum — the day it never warmed · Jan 12, 1918
Month
Warmest low
Coldest high
Jan
66°FJan 25, 1950
-2°FJan 12, 1918
Feb
66°FFeb 20, 2018
2°FFeb 9, 1899
Mar
70°FMar 27, 1907
17°FMar 1, 1980
Apr
71°FApr 6, 1873
32°FApr 1, 1881
May
76°FMay 30, 1991
42°FMay 2, 1897
Jun
83°FJun 14, 2022
57°FJun 15, 1917
Jul
83°FJul 25, 1901
67°FJul 24, 1895
Aug
84°FAug 19, 1936
61°FAug 30, 1915
Sep
80°FSep 6, 1881
52°FSep 30, 1876
Oct
76°FOct 5, 1941
34°FOct 30, 1917
Nov
68°FNov 12, 1879
14°FNov 24, 1950
Dec
64°FDec 15, 1948
3°FDec 22, 1989
All-time
84°FAug 19, 1936
-2°FJan 12, 1918
Hot Streaks
Current run
1 days
consecutive days with a high ≥ 90°F
Longest ever
22 days
record run, ended Aug 20 2007
So far in 2026
28 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from Louisville's own 1991–2020 record. Today's normal high: 86°F · forecast is +13° vs normal.
Louisville's observed daily high for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
2026 So Far
Every day this year against Louisville's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.