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Colorado · THREADEX · 1872–2026

Denver, CO

39.847°N, 104.656°W · station DENthr · 155 years of record
91°F
forecast high · Sep 3

7-Day Forecast

NWS NDFD forecast high temperature for Denver.
86°TUE9/189°WED9/291°THU9/391°FRI9/491°SAT9/590°SUN9/690°MON9/7

This Day in History

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

Ranks

#26 / 154
warmest Sep 3 in 154 yrs of record

Warmest Sep 3 ever

97°F
set in 2017

Coolest Sep 3 ever

46°F
set in 1961
Forecast high 91°F — 26th warmest Sep 3 of 154 years · record 97°F (2017) · warmest since 2024.
1872: 85°F1873: 84°F1874: 56°F1875: 91°F1876: 90°F1877: 68°F1878: 92°F1879: 77°F1880: 75°F1881: 88°F1882: 79°F1883: 86°F1884: 86°F1885: 80°F1886: 81°F1887: 84°F1888: 77°F1889: 94°F1890: 80°F1891: 80°F1892: 86°F1893: 86°F1894: 86°F1895: 85°F1896: 78°F1897: 88°F1898: 85°F1899: 94°F1900: 86°F1901: 84°F1902: 75°F1903: 89°F1904: 73°F1905: 75°F1906: 72°F1907: 85°F1908: 83°F1909: 81°F1910: 73°F1911: 71°F1912: 88°F1913: 83°F1914: 89°F1915: 74°F1916: 85°F1917: 92°F1918: 54°F1919: 82°F1920: 66°F1921: 87°F1922: 82°F1923: 81°F1924: 88°F1925: 82°F1926: 67°F1927: 80°F1928: 75°F1929: 73°F1930: 80°F1931: 84°F1932: 82°F1933: 90°F1934: 76°F1935: 60°F1936: 86°F1937: 82°F1938: 58°F1939: 83°F1940: 86°F1941: 89°F1942: 74°F1943: 65°F1944: 84°F1945: 93°F1946: 87°F1947: 91°F1948: 90°F1949: 70°F1950: 85°F1951: 74°F1952: 77°F1953: 60°F1954: 85°F1955: 84°F1956: 89°F1957: 85°F1958: 75°F1959: 85°F1960: 95°F1961: 46°F1962: 71°F1963: 88°F1964: 92°F1965: 80°F1966: 75°F1967: 84°F1968: 84°F1969: 85°F1970: 89°F1971: 88°F1972: 68°F1973: 79°F1974: 72°F1975: 78°F1976: 88°F1977: 91°F1978: 90°F1979: 86°F1980: 87°F1981: 74°F1982: 88°F1983: 91°F1984: 79°F1985: 81°F1986: 82°F1987: 89°F1988: 82°F1989: 90°F1990: 93°F1991: 78°F1992: 81°F1993: 87°F1994: 86°F1995: 95°F1996: 88°F1997: 83°F1998: 93°F1999: 78°F2000: 82°F2001: 92°F2002: 91°F2003: 70°F2004: 90°F2005: 94°F2006: 75°F2007: 91°F2008: 64°F2009: 88°F2010: 81°F2011: 71°F2012: 92°F2013: 94°F2014: 94°F2015: 87°F2016: 84°F2017: 97°F2018: 82°F2019: 83°F2020: 92°F2021: 81°F2022: 89°F2023: 91°F2024: 93°F2025: 84°F91° forecast4550556065707580859095100188018901900191019201930194019501960197019801990200020102020
📖 Denver's full Climate Almanac →

The Numbers

Forecast high · Sep 391°F
Hottest this date since2024
This-date record97°F
This-date rank#26 of 154
Hottest at any time since2026
All-time record105°F (1878)
Odds to tie/break0.0% (daily)
Period of record1872–2026

Record Book

The hottest and coldest ever recorded at Denver in each calendar month, and for the whole 1872–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan76°FJan 27, 1888-29°FJan 9, 1875
Feb80°FFeb 10, 2017-25°FFeb 8, 1936
Mar87°FMar 25, 2026-11°FMar 28, 1886
Apr90°FApr 30, 1992-2°FApr 2, 1975
May95°FMay 26, 194219°FMay 3, 1907
Jun105°FJun 25, 201230°FJun 2, 1951
Jul105°FJul 20, 200542°FJul 31, 1873
Aug105°FAug 8, 187840°FAug 22, 1904
Sep101°FSep 5, 202017°FSep 29, 1985
Oct90°FOct 1, 1892-2°FOct 29, 1917
Nov83°FNov 2, 2025-18°FNov 29, 1877
Dec79°FDec 5, 1939-25°FDec 24, 1876
All-time105°FAug 8, 1878-29°FJan 9, 1875

2026 Records So Far

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

Record Highs in 2026

10 broke
plus 3 tied — daily record highs set this year
Monthly high record this year: Mar (87°F)

Record Lows in 2026

1 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

77°F
record high minimum — the night it never cooled · Jul 3, 1881

Coldest high ever

-10°F
record low maximum — the day it never warmed · Feb 3, 1883
MonthWarmest lowColdest high
Jan52°FJan 4, 1893-9°FJan 19, 1883
Feb47°FFeb 4, 1890-10°FFeb 3, 1883
Mar56°FMar 16, 19084°FMar 12, 1880
Apr60°FApr 21, 193217°FApr 3, 1945
May66°FMay 29, 193430°FMay 4, 1908
Jun72°FJun 27, 192740°FJun 1, 1919
Jul77°FJul 3, 188153°FJul 10, 1895
Aug76°FAug 5, 188155°FAug 29, 1946
Sep69°FSep 18, 194729°FSep 29, 1985
Oct60°FOct 3, 195416°FOct 26, 2020
Nov56°FNov 24, 1949-1°FNov 27, 1919
Dec50°FDec 23, 1901-8°FDec 21, 1983
All-time77°FJul 3, 1881-10°FFeb 3, 1883

Hot Streaks

Current run

0 days
consecutive days with a high ≥ 90°F

Longest ever

24 days
record run, ended Aug 5 2008

So far in 2026

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

Climate Normals

Normal high & low by month, from Denver's own 1991–2020 record. Today's normal high: 84°F · forecast is +7° vs normal.
Jan: 44°FJan: 18°FFeb: 46°FFeb: 20°FMar: 55°FMar: 28°FApr: 61°FApr: 34°FMay: 71°FMay: 44°FJun: 83°FJun: 53°FJul: 90°FJul: 60°FAug: 87°FAug: 58°FSep: 79°FSep: 50°FOct: 65°FOct: 37°FNov: 53°FNov: 26°FDec: 44°FDec: 18°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:26 AM
Sunset6:30 PM
Solar noon11:58 AM
Daylight13h 04m · losing 17 min/wk
Local standard time (no DST), level horizon.

Location

39.85°N, 104.66°W

Nearby Stations

Colorado Springs, CO71 mi SCheyenne, WY90 mi NPueblo, CO107 mi SScottsbluff, NE150 mi NEGoodland, KS161 mi EAlamosa, CO178 mi SW

The Last 6 Weeks

Denver'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.
Denver, CO — last six weeks of daily high

2026 So Far

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

Every Day Since 1872

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

Days Above the Mark

How many days a year hit a given high at Denver — counted through Sep 3 each year, so you can see whether 2026 is running hot. Pick a threshold:
59 days ≥90°F so far in 2026 — the 3rd most in 155 years. Normal for this point: 29. Record: 68 in 2020.

Share Card

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Denver, CO hot share card
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