42.398°N, 90.709°W · station DBQthr · 1874–2026 · 153 years of record
The Almanac Ribbon
Every day of the year at Dubuque: the record high and record low ever set (outer lines), the everyday normal range (shaded band), and the full record envelope behind it.
Record highRecord lowNormal high–low band (1991–2020)hottest ever 110°F · coldest ever -32°F
Records by Month
Month
Record high
Record low
Jan
63°Jan 1, 1897
-32°Jan 7, 1887
Feb
72°Feb 26, 2024
-31°Feb 9, 1875
Mar
86°Mar 29, 1895
-20°Mar 1, 1962
Apr
93°Apr 22, 1980
10°Apr 6, 1982
May
104°May 31, 1934
21°May 3, 2005
Jun
104°Jun 28, 1934
36°Jun 11, 1972
Jul
110°Jul 14, 1936
40°Jul 9, 1895
Aug
107°Aug 18, 1936
40°Aug 30, 1915
Sep
99°Sep 6, 1922
24°Sep 30, 1899
Oct
90°Oct 3, 1997
10°Oct 30, 1925
Nov
78°Nov 7, 1915
-17°Nov 26, 1977
Dec
69°Dec 15, 2021
-25°Dec 24, 1983
All-time
110°Jul 14, 1936
-32°Jan 7, 1887
Longest-Standing Records
The daily records that have held the longest — set in the earliest years and never beaten since. Highs power Dubuque on hottestsince.com; lows on coldestsince.com.
Oldest-standing record highs
Date
Record
Set
Standing
May 27
93°
1874
152yrs
Jul 24
100°
1874
152yrs
May 23
91°
1875
151yrs
Dec 21
56°
1875
151yrs
Dec 29
56°
1875
151yrs
Feb 10
60°
1876
150yrs
Mar 10
69°
1876
150yrs
Aug 13
93°
1876
150yrs
Feb 1
51°
1877
149yrs
Dec 17
60°
1877
149yrs
Dec 18
57°
1877
149yrs
Dec 19
64°
1877
149yrs
Oldest-standing record lows
Date
Record
Set
Standing
Jan 9
-23°
1875
151yrs
Feb 7
-26°
1875
151yrs
Feb 9
-31°
1875
151yrs
Feb 15
-17°
1875
151yrs
Feb 16
-21°
1875
151yrs
Apr 15
14°
1875
151yrs
Apr 16
16°
1875
151yrs
Aug 1
50°
1875
151yrs
Aug 21
41°
1875
151yrs
Aug 22
44°
1875
151yrs
Aug 23
43°
1875
151yrs
Nov 28
-9°
1875
151yrs
All-Time Extremes
Hottest ever
110°F
1936-07-14
Coldest ever
-32°F
1887-01-07
Longest heat streak
16 days
≥ 90°F · ended 1901-07-27
The Warming Trend
Dubuque's annual mean temperature, each year a stripe — blue below the 1991–2020 average, red above.
Days Above / Below the Mark
10 days ≥90°F in 2026 · normal 13 · record 42 in 1934
83 days ≤32°F in 2026 · normal 140 · record 167 in 2018
The Full Record
Every day of the year, record and normal high & low with the year each record was set. Type to filter, click a column to sort.