All-time weather records — Boonton, NJ

Record high
880.0°F
May 8, 1939
Record low
-61.1°F
June 4, 1940
Wettest day
7.45 in
July 23, 1919

Climate change signal in Boonton

10.9%

of Boonton's all-time daily heat records were set in the last decade (40 of 366 records since 2015).

1.6%

of all-time daily cold records were set in the last decade (6 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1890s
41
27
1900s
4
4
1910s
19
41
1920s
27
102
1930s
39
46
1940s
40
37
1950s
33
22
1960s
14
32
1970s
20
13
1980s
13
17
1990s
29
19
2000s
30
·
2010s
38
6
2020s
19
·

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1894, the latest in 2026. Period of observation: 1892-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 71.1°F — Jan 16, 1932 -15.0°F — Jan 22, 1961 3.01 in — Jan 10, 2024
February 75.0°F — Feb 22, 2018 -20.0°F — Feb 9, 1934 3.29 in — Feb 6, 1896
March 82.9°F — Mar 29, 1945 -2.9°F — Mar 1, 1934 3.50 in — Mar 22, 1980
April 93.0°F — Apr 18, 2002 8.1°F — Apr 1, 1923 3.65 in — Apr 16, 2007
May 880.0°F — May 8, 1939 26.1°F — May 11, 1923 3.40 in — May 1, 2014
June 99.0°F — Jun 5, 1925 -61.1°F — Jun 4, 1940 3.72 in — Jun 6, 1992
July 102.0°F — Jul 7, 2010 42.1°F — Jul 6, 1927 7.45 in — Jul 23, 1919
August 102.9°F — Aug 8, 1918 36.0°F — Aug 8, 1897 4.95 in — Aug 13, 1955
September 104.0°F — Sep 3, 1953 28.9°F — Sep 25, 1963 5.53 in — Sep 22, 1966
October 90.0°F — Oct 3, 2019 16.0°F — Oct 28, 1936 6.89 in — Oct 10, 1903
November 80.1°F — Nov 1, 2024 6.1°F — Nov 26, 1938 3.45 in — Nov 9, 1972
December 77.0°F — Dec 1, 1933 -20.9°F — Dec 30, 1917 3.57 in — Dec 18, 2023

Click a month to see every daily record for that month in Boonton.