40.485°N, 80.215°W · station PITthr · 153 years of record
59°F
COLDEST SEP 8 SINCE 2025
forecast low · Sep 8
7-Day Forecast
NWS NDFD forecast low temperature for Pittsburgh.
This Day in History
Every year's low on each of the next 7 forecast dates at Pittsburgh — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.
Ranks
#147 / 152
coldest Sep 2 in 152 yrs of record
Coldest Sep 2 ever
45°F
set in 1909
Mildest Sep 2 ever
76°F
set in 1898
Forecast low 71°F — 147th coldest Sep 2 of 152 years · record 45°F (1909) · coldest since 2025.
Ranks
#148 / 152
coldest Sep 3 in 152 yrs of record
Coldest Sep 3 ever
44°F
set in 1893
Mildest Sep 3 ever
77°F
set in 1898
Forecast low 72°F — 148th coldest Sep 3 of 152 years · record 44°F (1893) · coldest since 2025.
Ranks
#146 / 152
coldest Sep 4 in 152 yrs of record
Coldest Sep 4 ever
42°F
set in 1997
Mildest Sep 4 ever
75°F
set in 1880
Forecast low 70°F — 146th coldest Sep 4 of 152 years · record 42°F (1997) · coldest since 2025.
Ranks
#112 / 152
coldest Sep 5 in 152 yrs of record
Coldest Sep 5 ever
44°F
set in 1997
Mildest Sep 5 ever
72°F
set in 2018
Forecast low 64°F — 112th coldest Sep 5 of 152 years · record 44°F (1997) · coldest since 2025.
Ranks
#80 / 152
coldest Sep 6 in 152 yrs of record
Coldest Sep 6 ever
39°F
set in 1962
Mildest Sep 6 ever
74°F
set in 1881
Forecast low 60°F — 80th coldest Sep 6 of 152 years · record 39°F (1962) · coldest since 2025.
Ranks
#86 / 152
coldest Sep 7 in 152 yrs of record
Coldest Sep 7 ever
41°F
set in 1984
Mildest Sep 7 ever
76°F
set in 1881
Forecast low 60°F — 86th coldest Sep 7 of 152 years · record 41°F (1984) · coldest since 2025.
Ranks
#75 / 152
coldest Sep 8 in 152 yrs of record
Coldest Sep 8 ever
37°F
set in 1986
Mildest Sep 8 ever
72°F
set in 1881
Forecast low 59°F — 75th coldest Sep 8 of 152 years · record 37°F (1986) · coldest since 2025.
The hottest and coldest ever recorded at Pittsburgh in each calendar month, and for the whole 1874–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
75°FJan 22, 1906
-22°FJan 19, 1994
Feb
78°FFeb 20, 2018
-20°FFeb 10, 1899
Mar
84°FMar 25, 1929
-5°FMar 6, 2015
Apr
90°FApr 18, 1896
11°FApr 1, 1923
May
95°FMay 25, 1875
26°FMay 2, 1963
Jun
98°FJun 4, 1895
34°FJun 11, 1972
Jul
103°FJul 10, 1881
42°FJul 9, 1963
Aug
103°FAug 6, 1918
39°FAug 29, 1982
Sep
102°FSep 6, 1881
31°FSep 19, 1959
Oct
91°FOct 5, 1879
16°FOct 29, 1965
Nov
82°FNov 3, 1961
-1°FNov 30, 1958
Dec
74°FDec 3, 1982
-12°FDec 25, 1983
All-time
103°FJul 10, 1881
-22°FJan 19, 1994
2026 Records So Far
Records set or tied at Pittsburgh so far this year — through Aug 30.
Record Highs in 2026
2 broke
plus 1 tied — daily record highs set this year
Monthly high record this year: Mar (84°F)
Record Lows in 2026
2 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
82°F
record high minimum — the night it never cooled · Jul 1, 1901
Coldest high ever
-3°F
record low maximum — the day it never warmed · Feb 9, 1899
Month
Warmest low
Coldest high
Jan
61°FJan 22, 1906
-3°FJan 17, 1982
Feb
59°FFeb 11, 1932
-3°FFeb 9, 1899
Mar
67°FMar 23, 1907
12°FMar 1, 1980
Apr
69°FApr 30, 1899
25°FApr 18, 1875
May
72°FMay 31, 1895
40°FMay 9, 1923
Jun
78°FJun 27, 1876
47°FJun 1, 1910
Jul
82°FJul 1, 1901
59°FJul 5, 1972
Aug
81°FAug 6, 1918
61°FAug 28, 1915
Sep
77°FSep 3, 1898
46°FSep 30, 1899
Oct
75°FOct 4, 1898
34°FOct 26, 1962
Nov
65°FNov 1, 1929
14°FNov 30, 1929
Dec
59°FDec 8, 1966
0°FDec 25, 1983
All-time
82°FJul 1, 1901
-3°FFeb 9, 1899
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
75 days
record run, ended Feb 10 1977
So far in 2026
68 days
days with a low ≤ 32°F this year
Climate Normals
Normal low & low by month, from Pittsburgh's own 1991–2020 record. Today's normal low: 58°F · forecast is +1° vs normal.
Pittsburgh's observed daily low 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 Pittsburgh's own record — the record low, the normal, and the full span ever seen. A shareable look at where the year stands.