43.205°N, 71.503°W · station CONthr · 1868–2026 · 159 years of record
The Almanac Ribbon
Every day of the year at Concord: 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 102°F · coldest ever -37°F
Records by Month
Month
Record high
Record low
Jan
72°Jan 1, 1876
-35°Jan 8, 1878
Feb
74°Feb 21, 2018
-37°Feb 16, 1943
Mar
89°Mar 31, 1998
-20°Mar 6, 1869
Apr
95°Apr 19, 1976
4°Apr 5, 2016
May
98°May 22, 1911
21°May 10, 1947
Jun
101°Jun 4, 1919
30°Jun 12, 1972
Jul
102°Jul 4, 1911
35°Jul 7, 1965
Aug
101°Aug 2, 1975
29°Aug 31, 1965
Sep
98°Sep 2, 1953
20°Sep 30, 1941
Oct
92°Oct 16, 1879
10°Oct 24, 1969
Nov
80°Nov 2, 1876
-17°Nov 30, 1875
Dec
73°Dec 7, 1998
-24°Dec 20, 1875
All-time
102°Jul 4, 1911
-37°Feb 16, 1943
Longest-Standing Records
The daily records that have held the longest — set in the earliest years and never beaten since. Highs power Concord on hottestsince.com; lows on coldestsince.com.
Oldest-standing record highs
Date
Record
Set
Standing
Jan 29
52°
1869
157yrs
May 11
93°
1869
157yrs
Feb 15
58°
1870
156yrs
Jun 24
99°
1870
156yrs
Jul 10
98°
1870
156yrs
Jul 23
100°
1870
156yrs
Aug 6
96°
1870
156yrs
Aug 9
97°
1870
156yrs
Aug 10
97°
1870
156yrs
Aug 18
94°
1870
156yrs
Mar 11
68°
1871
155yrs
Apr 7
92°
1871
155yrs
Oldest-standing record lows
Date
Record
Set
Standing
Sep 18
29°
1868
158yrs
Oct 24
13°
1868
158yrs
Feb 29
-14°
1869
157yrs
Mar 1
-18°
1869
157yrs
Mar 5
-20°
1869
157yrs
Mar 15
0°
1869
157yrs
Apr 30
25°
1869
157yrs
Aug 7
41°
1869
157yrs
Oct 26
18°
1870
156yrs
Feb 5
-16°
1871
155yrs
Jun 21
37°
1871
155yrs
Jul 22
41°
1871
155yrs
All-Time Extremes
Hottest ever
102°F
1911-07-04
Coldest ever
-37°F
1943-02-16
Longest heat streak
12 days
≥ 90°F · ended 2024-07-17
The Warming Trend
Concord's annual mean temperature, each year a stripe — blue below the 1991–2020 average, red above.
Days Above / Below the Mark
15 days ≥90°F in 2026 · normal 11 · record 30 in 1955
103 days ≤32°F in 2026 · normal 163 · record 199 in 1978
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.