43.904°N, 92.492°W · station RSTthr · 141 years of record
60°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
#107 / 115
coldest Sep 2 in 115 yrs of record
Coldest Sep 2 ever
35°F
set in 1909
Mildest Sep 2 ever
72°F
set in 1913
Forecast low 67°F — 107th coldest Sep 2 of 115 years · record 35°F (1909) · coldest since 2025.
Ranks
#109 / 114
coldest Sep 3 in 114 yrs of record
Coldest Sep 3 ever
33°F
set in 1974
Mildest Sep 3 ever
74°F
set in 1937
Forecast low 68°F — 109th coldest Sep 3 of 114 years · record 33°F (1974) · coldest since 2025.
Ranks
#113 / 115
coldest Sep 4 in 115 yrs of record
Coldest Sep 4 ever
36°F
set in 1974
Mildest Sep 4 ever
70°F
set in 2015
Forecast low 69°F — 113th coldest Sep 4 of 115 years · record 36°F (1974) · coldest since 2025.
Ranks
#112 / 115
coldest Sep 5 in 115 yrs of record
Coldest Sep 5 ever
34°F
set in 1918
Mildest Sep 5 ever
70°F
set in 2015
Forecast low 68°F — 112th coldest Sep 5 of 115 years · record 34°F (1918) · coldest since 2025.
Ranks
#105 / 115
coldest Sep 6 in 115 yrs of record
Coldest Sep 6 ever
38°F
set in 1935
Mildest Sep 6 ever
73°F
set in 1912
Forecast low 67°F — 105th coldest Sep 6 of 115 years · record 38°F (1935) · coldest since 2025.
Ranks
#96 / 114
coldest Sep 7 in 114 yrs of record
Coldest Sep 7 ever
34°F
set in 1934
Mildest Sep 7 ever
70°F
set in 1985
Forecast low 63°F — 96th coldest Sep 7 of 114 years · record 34°F (1934) · coldest since 2025.
Ranks
#93 / 115
coldest Sep 8 in 115 yrs of record
Coldest Sep 8 ever
35°F
set in 1932
Mildest Sep 8 ever
73°F
set in 1919
Forecast low 60°F — 93rd coldest Sep 8 of 115 years · record 35°F (1932) · coldest since 2025.
The hottest and coldest ever recorded at Rochester in each calendar month, and for the whole 1886–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
58°FJan 25, 1944
-42°FJan 7, 1887
Feb
69°FFeb 26, 2024
-35°FFeb 2, 1996
Mar
82°FMar 24, 1910
-31°FMar 1, 1962
Apr
92°FApr 24, 2009
5°FApr 6, 1982
May
106°FMay 31, 1934
21°FMay 3, 1910
Jun
105°FJun 27, 1934
31°FJun 9, 1937
Jul
108°FJul 14, 1936
40°FJul 17, 1911
Aug
100°FAug 3, 1930
32°FAug 30, 1915
Sep
100°FSep 6, 1913
22°FSep 28, 1893
Oct
93°FOct 3, 1997
-6°FOct 25, 1887
Nov
77°FNov 1, 1893
-24°FNov 28, 1887
Dec
64°FDec 4, 2017
-33°FDec 19, 1983
All-time
108°FJul 14, 1936
-42°FJan 7, 1887
2026 Records So Far
Records set or tied at Rochester so far this year — through Aug 30.
Record Highs in 2026
3 broke
plus 1 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
85°F
record high minimum — the night it never cooled · Jul 3, 1911
Coldest high ever
-22°F
record low maximum — the day it never warmed · Jan 6, 1912
Month
Warmest low
Coldest high
Jan
42°FJan 25, 1944
-22°FJan 6, 1912
Feb
43°FFeb 25, 2000
-20°FFeb 2, 1996
Mar
62°FMar 19, 2012
-3°FMar 2, 2014
Apr
63°FApr 26, 1912
22°FApr 1, 1975
May
74°FMay 27, 1911
33°FMay 2, 2013
Jun
77°FJun 26, 1943
46°FJun 2, 1945
Jul
85°FJul 3, 1911
58°FJul 18, 2000
Aug
78°FAug 27, 1886
55°FAug 31, 1958
Sep
74°FSep 3, 1937
34°FSep 29, 1945
Oct
71°FOct 4, 2005
21°FOct 25, 1887
Nov
57°FNov 2, 1938
-4°FNov 28, 1887
Dec
49°FDec 2, 1982
-20°FDec 23, 1983
All-time
85°FJul 3, 1911
-22°FJan 6, 1912
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
143 days
record run, ended Mar 29 2001
So far in 2026
91 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: 53°F · forecast is +7° 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.