43.117°N, 77.675°W · station ROCthr · 155 years of record
56°F
COLDEST SEP 8 SINCE 2025
forecast low · Sep 8
7-Day Forecast
NWS NDFD forecast low temperature for Rochester.
This Day in History
Every year's low on each of the next 7 forecast dates at Rochester — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.
Ranks
#132 / 153
coldest Sep 2 in 153 yrs of record
Coldest Sep 2 ever
40°F
set in 1885
Mildest Sep 2 ever
73°F
set in 1898
Forecast low 67°F — 132nd coldest Sep 2 of 153 years · record 40°F (1885) · coldest since 2025.
Ranks
#138 / 153
coldest Sep 3 in 153 yrs of record
Coldest Sep 3 ever
41°F
set in 1946
Mildest Sep 3 ever
76°F
set in 1898
Forecast low 68°F — 138th coldest Sep 3 of 153 years · record 41°F (1946) · coldest since 2025.
Ranks
#111 / 153
coldest Sep 4 in 153 yrs of record
Coldest Sep 4 ever
40°F
set in 1946
Mildest Sep 4 ever
73°F
set in 1953
Forecast low 62°F — 111th coldest Sep 4 of 153 years · record 40°F (1946) · coldest since 2025.
Ranks
#103 / 153
coldest Sep 5 in 153 yrs of record
Coldest Sep 5 ever
42°F
set in 1963
Mildest Sep 5 ever
73°F
set in 1881
Forecast low 60°F — 103rd coldest Sep 5 of 153 years · record 42°F (1963) · coldest since 2025.
Ranks
#76 / 153
coldest Sep 6 in 153 yrs of record
Coldest Sep 6 ever
40°F
set in 1962
Mildest Sep 6 ever
75°F
set in 1881
Forecast low 57°F — 76th coldest Sep 6 of 153 years · record 40°F (1962) · coldest since 2025.
Ranks
#78 / 153
coldest Sep 7 in 153 yrs of record
Coldest Sep 7 ever
40°F
set in 2000
Mildest Sep 7 ever
73°F
set in 1881
Forecast low 57°F — 78th coldest Sep 7 of 153 years · record 40°F (2000) · coldest since 2025.
Ranks
#84 / 153
coldest Sep 8 in 153 yrs of record
Coldest Sep 8 ever
37°F
set in 1986
Mildest Sep 8 ever
72°F
set in 1872
Forecast low 56°F — 84th coldest Sep 8 of 153 years · record 37°F (1986) · coldest since 2025.
The hottest and coldest ever recorded at Rochester in each calendar month, and for the whole 1872–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
74°FJan 25, 1950
-17°FJan 16, 1994
Feb
73°FFeb 21, 1997
-22°FFeb 9, 1934
Mar
86°FMar 29, 1905
-9°FMar 6, 2014
Apr
93°FApr 30, 1970
7°FApr 1, 1923
May
94°FMay 14, 1974
26°FMay 7, 1970
Jun
100°FJun 21, 1953
35°FJun 1, 1945
Jul
102°FJul 9, 1936
42°FJul 9, 1963
Aug
99°FAug 26, 1948
36°FAug 30, 1965
Sep
99°FSep 3, 1953
28°FSep 28, 1947
Oct
91°FOct 5, 1951
19°FOct 25, 1879
Nov
81°FNov 1, 1950
1°FNov 30, 1875
Dec
72°FDec 3, 1982
-16°FDec 20, 1942
All-time
102°FJul 9, 1936
-22°FFeb 9, 1934
2026 Records So Far
Records set or tied at Rochester so far this year — through Aug 30.
Record Highs in 2026
2 broke
plus 0 tied — daily record highs set this year
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
81°F
record high minimum — the night it never cooled · Jul 9, 1936
Coldest high ever
-4°F
record low maximum — the day it never warmed · Jan 17, 1982
Month
Warmest low
Coldest high
Jan
55°FJan 21, 1906
-4°FJan 17, 1982
Feb
54°FFeb 20, 2018
-3°FFeb 9, 1934
Mar
62°FMar 30, 1910
4°FMar 5, 1872
Apr
65°FApr 25, 1915
21°FApr 4, 1975
May
74°FMay 31, 2018
38°FMay 2, 1909
Jun
77°FJun 22, 2025
48°FJun 2, 1945
Jul
81°FJul 9, 1936
58°FJul 7, 1891
Aug
78°FAug 1, 1917
58°FAug 16, 1879
Sep
76°FSep 3, 1898
45°FSep 30, 1947
Oct
72°FOct 9, 2018
31°FOct 30, 1887
Nov
62°FNov 5, 2022
7°FNov 30, 1875
Dec
58°FDec 3, 1982
-1°FDec 29, 1933
All-time
81°FJul 9, 1936
-4°FJan 17, 1982
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
105 days
record run, ended Mar 19 1959
So far in 2026
79 days
days with a low ≤ 32°F this year
Climate Normals
Normal low & low by month, from Rochester's own 1991–2020 record. Today's normal low: 56°F · forecast is +0° vs normal.
Rochester'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 Rochester's own record — the record low, the normal, and the full span ever seen. A shareable look at where the year stands.