HOTTESTSINCE.COMBrowse statesThe AlmanacYear in ReviewThe Wire
HOT10
Hottest Since
National Heat Records
Wyoming · THREADEX · 1872–2026

Cheyenne, WY

41.158°N, 104.808°W · station CYSthr · 155 years of record
87°F
forecast high · Sep 4

7-Day Forecast

NWS NDFD forecast high temperature for Cheyenne.
81°TUE9/183°WED9/284°THU9/387°FRI9/485°SAT9/584°SUN9/684°MON9/7

This Day in History

Every year's high on each of the next 7 forecast dates at Cheyenne — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.

Ranks

#13 / 153
warmest Sep 4 in 153 yrs of record

Warmest Sep 4 ever

94°F
set in 2022

Coolest Sep 4 ever

51°F
set in 1968
Forecast high 87°F — 13th warmest Sep 4 of 153 years · record 94°F (2022) · warmest since 2024.
1873: 72°F1874: 71°F1875: 86°F1876: 86°F1877: 60°F1878: 68°F1879: 79°F1880: 77°F1881: 78°F1882: 80°F1883: 81°F1884: 76°F1885: 56°F1886: 78°F1887: 79°F1888: 76°F1889: 58°F1890: 78°F1891: 74°F1892: 70°F1893: 82°F1894: 81°F1895: 81°F1896: 69°F1897: 83°F1898: 78°F1899: 87°F1900: 80°F1901: 71°F1902: 86°F1903: 66°F1904: 71°F1905: 63°F1906: 81°F1907: 75°F1908: 79°F1909: 58°F1910: 73°F1911: 79°F1912: 81°F1913: 80°F1914: 80°F1915: 72°F1916: 82°F1917: 83°F1918: 54°F1919: 76°F1920: 63°F1921: 70°F1922: 79°F1923: 78°F1924: 85°F1925: 76°F1926: 60°F1927: 80°F1928: 73°F1929: 52°F1930: 76°F1931: 87°F1932: 66°F1933: 86°F1934: 83°F1935: 70°F1936: 78°F1937: 80°F1938: 71°F1939: 85°F1940: 74°F1941: 70°F1942: 77°F1943: 85°F1944: 76°F1945: 86°F1946: 82°F1947: 82°F1948: 89°F1949: 63°F1950: 78°F1951: 62°F1952: 84°F1953: 68°F1954: 79°F1955: 75°F1956: 62°F1957: 78°F1958: 79°F1959: 89°F1960: 92°F1961: 52°F1962: 58°F1963: 77°F1964: 77°F1965: 68°F1966: 79°F1967: 73°F1968: 51°F1969: 76°F1970: 83°F1971: 58°F1972: 72°F1973: 72°F1974: 79°F1975: 75°F1976: 79°F1977: 79°F1978: 89°F1979: 89°F1980: 84°F1981: 78°F1982: 87°F1983: 68°F1984: 78°F1985: 75°F1986: 73°F1987: 73°F1988: 74°F1989: 75°F1990: 83°F1991: 83°F1992: 80°F1993: 81°F1994: 83°F1995: 91°F1996: 85°F1997: 80°F1998: 91°F1999: 68°F2000: 81°F2001: 88°F2002: 84°F2003: 82°F2004: 83°F2005: 82°F2006: 70°F2007: 83°F2008: 66°F2009: 81°F2010: 86°F2011: 70°F2012: 84°F2013: 89°F2014: 68°F2015: 84°F2016: 85°F2017: 80°F2018: 75°F2019: 90°F2020: 78°F2021: 81°F2022: 94°F2023: 83°F2024: 89°F2025: 79°F87° forecast50556065707580859095188018901900191019201930194019501960197019801990200020102020
📖 Cheyenne's full Climate Almanac →

The Numbers

Forecast high · Sep 487°F
Hottest this date since2024
This-date record94°F
This-date rank#13 of 153
Hottest at any time since2026
All-time record100°F (1881)
Odds to tie/break0.0% (daily)
Period of record1872–2026

Record Book

The hottest and coldest ever recorded at Cheyenne in each calendar month, and for the whole 1872–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan70°FJan 27, 2015-38°FJan 9, 1875
Feb71°FFeb 11, 1962-34°FFeb 8, 1936
Mar83°FMar 21, 2026-21°FMar 2, 1943
Apr84°FApr 30, 2020-8°FApr 1, 1975
May91°FMay 29, 20008°FMay 3, 1907
Jun100°FJun 23, 195425°FJun 2, 1951
Jul100°FJul 14, 188133°FJul 4, 1915
Aug98°FAug 1, 200825°FAug 25, 1910
Sep97°FSep 7, 20228°FSep 30, 1985
Oct85°FOct 9, 1910-5°FOct 26, 1878
Nov75°FNov 5, 1891-21°FNov 13, 1916
Dec70°FDec 2, 2021-28°FDec 9, 1919
All-time100°FJul 14, 1881-38°FJan 9, 1875

2026 Records So Far

Records set or tied at Cheyenne so far this year — through Aug 30.

Record Highs in 2026

10 broke
plus 2 tied — daily record highs set this year
Monthly high records this year: Mar (83°F), Aug (98°F)

Record Lows in 2026

0 broke
plus 0 tied — daily record lows set this year

Record Warm Nights & Cold Days

Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.

Warmest low ever

68°F
record high minimum — the night it never cooled · Jul 31, 1960

Coldest high ever

-21°F
record low maximum — the day it never warmed · Jan 11, 1963
MonthWarmest lowColdest high
Jan46°FJan 19, 1920-21°FJan 11, 1963
Feb50°FFeb 4, 1890-18°FFeb 3, 1989
Mar51°FMar 16, 1908-5°FMar 12, 1880
Apr54°FApr 14, 20029°FApr 7, 1875
May60°FMay 28, 193426°FMay 1, 1954
Jun67°FJun 21, 202537°FJun 1, 1951
Jul68°FJul 31, 196047°FJul 10, 1895
Aug67°FAug 24, 202049°FAug 28, 1892
Sep65°FSep 5, 201929°FSep 24, 1926
Oct56°FOct 16, 199111°FOct 30, 1991
Nov53°FNov 15, 2021-4°FNov 27, 1919
Dec47°FDec 12, 1921-18°FDec 20, 1990
All-time68°FJul 31, 1960-21°FJan 11, 1963

Hot Streaks

Current run

0 days
consecutive days with a high ≥ 90°F

Longest ever

10 days
record run, ended Jul 21 2003

So far in 2026

20 days
days with a high ≥ 90°F this year

Climate Normals

Normal high & low by month, from Cheyenne's own 1991–2020 record. Today's normal high: 78°F · forecast is +9° vs normal.
Jan: 40°FJan: 18°FFeb: 41°FFeb: 18°FMar: 49°FMar: 25°FApr: 55°FApr: 30°FMay: 64°FMay: 40°FJun: 77°FJun: 49°FJul: 84°FJul: 56°FAug: 82°FAug: 54°FSep: 73°FSep: 46°FOct: 59°FOct: 34°FNov: 48°FNov: 24°FDec: 39°FDec: 18°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:26 AM
Sunset6:32 PM
Solar noon11:59 AM
Daylight13h 07m · losing 18 min/wk
Local standard time (no DST), level horizon.

Location

41.16°N, 104.81°W

Nearby Stations

Scottsbluff, NE79 mi NEDenver, CO90 mi SCasper, WY147 mi NWColorado Springs, CO162 mi SPueblo, CO198 mi SGoodland, KS205 mi SE

The Last 6 Weeks

Cheyenne's observed daily high for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
Cheyenne, WY — last six weeks of daily high

2026 So Far

Every day this year against Cheyenne's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.
Cheyenne, WY — 2026 daily high trace
Download year chart

Every Day Since 1872

Each cell is one day's high at Cheyenne, coloured by temperature — 155 years of record, so heat waves read as warm streaks and cold snaps as blue.
Cheyenne, WY daily high heat map 1872–2026

Days Above the Mark

How many days a year hit a given high at Cheyenne — counted through Sep 4 each year, so you can see whether 2026 is running hot. Pick a threshold:
20 days ≥90°F so far in 2026 — tied for the 17th most in 155 years. Normal for this point: 9. Record: 32 in 2003.

Share Card

A ready-to-share summary of Cheyenne's outlook — post it, or link this page.
Cheyenne, WY hot share card
Download card
See Cheyenne on coldestsince.com →