41.960°N, 87.932°W · station ORDthr · 1872–2026 · 155 years of record
The Almanac Ribbon
Every day of the year at Chicago: 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 105°F · coldest ever -27°F
Records by Month
Month
Record high
Record low
Jan
67°Jan 25, 1950
-27°Jan 20, 1985
Feb
75°Feb 27, 1976
-21°Feb 9, 1899
Mar
88°Mar 29, 1986
-12°Mar 4, 1873
Apr
91°Apr 30, 1942
7°Apr 7, 1982
May
98°May 31, 1934
27°May 2, 1875
Jun
104°Jun 20, 1953
35°Jun 4, 1945
Jul
105°Jul 24, 1934
45°Jul 7, 1983
Aug
102°Aug 5, 1918
42°Aug 28, 1986
Sep
101°Sep 1, 1953
29°Sep 28, 1942
Oct
94°Oct 6, 1963
14°Oct 25, 1887
Nov
81°Nov 1, 1950
-2°Nov 29, 1872
Dec
71°Dec 3, 1970
-25°Dec 24, 1983
All-time
105°Jul 24, 1934
-27°Jan 20, 1985
Longest-Standing Records
The daily records that have held the longest — set in the earliest years and never beaten since. Highs power Chicago on hottestsince.com; lows on coldestsince.com.
Oldest-standing record highs
Date
Record
Set
Standing
Apr 4
83°
1873
153yrs
Jan 3
60°
1874
152yrs
Dec 21
57°
1875
151yrs
Dec 30
68°
1875
151yrs
Jan 1
65°
1876
150yrs
Jan 28
60°
1876
150yrs
Feb 10
63°
1876
150yrs
Dec 11
61°
1877
149yrs
Dec 17
62°
1877
149yrs
Dec 18
64°
1877
149yrs
Dec 19
67°
1877
149yrs
Dec 8
62°
1879
147yrs
Oldest-standing record lows
Date
Record
Set
Standing
Aug 30
49°
1872
154yrs
Oct 14
27°
1872
154yrs
Nov 29
-2°
1872
154yrs
Dec 22
-21°
1872
154yrs
Dec 24
-23°
1872
154yrs
Jan 29
-16°
1873
153yrs
Feb 21
-11°
1873
153yrs
Feb 22
-14°
1873
153yrs
Feb 23
-18°
1873
153yrs
Feb 24
-11°
1873
153yrs
Mar 2
-6°
1873
153yrs
Mar 3
-12°
1873
153yrs
All-Time Extremes
Hottest ever
105°F
1934-07-24
Coldest ever
-27°F
1985-01-20
Longest heat streak
11 days
≥ 90°F · ended 1953-09-03
The Warming Trend
Chicago's annual mean temperature, each year a stripe — blue below the 1991–2020 average, red above.
Days Above / Below the Mark
12 days ≥90°F in 2026 · normal 16 · record 47 in 1988
71 days ≤32°F in 2026 · normal 117 · record 150 in 1887
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.