All-time weather records — Newcastle, WY

Record high
108.0°F
July 5, 1936
Record low
-36.9°F
January 17, 1930
Wettest day
3.60 in
August 11, 2019

Climate change signal in Newcastle

13.1%

of Newcastle's all-time daily heat records were set in the last decade (48 of 366 records since 2015).

6.3%

of all-time daily cold records were set in the last decade (23 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 #
1900s
10
15
1910s
28
41
1920s
27
34
1930s
73
51
1940s
15
25
1950s
11
29
1960s
12
35
1970s
9
29
1980s
17
44
1990s
52
20
2000s
58
16
2010s
18
12
2020s
36
15

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 1906, the latest in 2026. Period of observation: 1906-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.0°F — Jan 12, 1953 -36.9°F — Jan 17, 1930 0.69 in — Jan 14, 1953
February 69.1°F — Feb 25, 1995 -33.0°F — Feb 8, 1936 0.60 in — Feb 23, 2012
March 84.9°F — Mar 22, 2026 -18.0°F — Mar 4, 2019 0.80 in — Mar 18, 2003
April 91.0°F — Apr 27, 1910 -13.0°F — Apr 2, 1936 1.72 in — Apr 19, 2000
May 98.1°F — May 28, 1934 10.9°F — May 2, 1954 2.76 in — May 10, 2011
June 105.1°F — Jun 30, 2002 28.0°F — Jun 2, 1951 2.70 in — Jun 8, 1964
July 108.0°F — Jul 5, 1936 37.0°F — Jul 3, 1921 2.25 in — Jul 19, 1997
August 105.1°F — Aug 14, 1937 26.1°F — Aug 25, 1910 3.60 in — Aug 11, 2019
September 100.9°F — Sep 1, 1940 12.0°F — Sep 25, 1926 2.60 in — Sep 29, 1923
October 90.0°F — Oct 2, 1992 -11.0°F — Oct 28, 1925 2.19 in — Oct 7, 1994
November 78.1°F — Nov 1, 1999 -20.9°F — Nov 23, 1985 0.80 in — Nov 6, 1924
December 68.0°F — Dec 5, 1939 -35.0°F — Dec 21, 1983 0.95 in — Dec 13, 1992

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