41.158°N, 104.808°W · station CYSthr · 1872–2026 · 155 years of record
The Almanac Ribbon
Every day of the year at Cheyenne: 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 100°F · coldest ever -38°F
Records by Month
Month
Record high
Record low
Jan
70°Jan 27, 2015
-38°Jan 9, 1875
Feb
71°Feb 11, 1962
-34°Feb 8, 1936
Mar
83°Mar 21, 2026
-21°Mar 2, 1943
Apr
84°Apr 30, 2020
-8°Apr 1, 1975
May
91°May 29, 2000
8°May 3, 1907
Jun
100°Jun 23, 1954
25°Jun 2, 1951
Jul
100°Jul 14, 1881
33°Jul 4, 1915
Aug
98°Aug 1, 2008
25°Aug 25, 1910
Sep
97°Sep 7, 2022
8°Sep 30, 1985
Oct
85°Oct 9, 1910
-5°Oct 26, 1878
Nov
75°Nov 5, 1891
-21°Nov 13, 1916
Dec
70°Dec 2, 2021
-28°Dec 9, 1919
All-time
100°Jul 14, 1881
-38°Jan 9, 1875
Longest-Standing Records
The daily records that have held the longest — set in the earliest years and never beaten since. Highs power Cheyenne on hottestsince.com; lows on coldestsince.com.
Oldest-standing record highs
Date
Record
Set
Standing
Apr 29
80°
1874
152yrs
May 6
84°
1874
152yrs
May 22
88°
1874
152yrs
May 24
88°
1874
152yrs
Jun 20
95°
1874
152yrs
Jul 1
96°
1874
152yrs
Jul 3
98°
1874
152yrs
Jul 4
96°
1877
149yrs
Nov 21
67°
1878
148yrs
Mar 29
77°
1879
147yrs
May 1
84°
1879
147yrs
May 21
86°
1879
147yrs
Oldest-standing record lows
Date
Record
Set
Standing
Nov 14
-7°
1872
154yrs
Apr 22
11°
1873
153yrs
Apr 23
5°
1873
153yrs
Apr 24
18°
1873
153yrs
Jul 17
43°
1873
153yrs
Jul 25
45°
1873
153yrs
Oct 24
5°
1873
153yrs
Dec 1
-7°
1873
153yrs
Dec 2
-9°
1873
153yrs
Feb 24
-24°
1874
152yrs
Feb 25
-10°
1874
152yrs
Apr 21
9°
1874
152yrs
All-Time Extremes
Hottest ever
100°F
1881-07-14
Coldest ever
-38°F
1875-01-09
Longest heat streak
10 days
≥ 90°F · ended 2003-07-21
The Warming Trend
Cheyenne's annual mean temperature, each year a stripe — blue below the 1991–2020 average, red above.
Days Above / Below the Mark
20 days ≥90°F in 2026 · normal 10 · record 33 in 2020
79 days ≤32°F in 2026 · normal 173 · record 201 in 1878
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.