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Colorado · THREADEX · 1872–2026

Denver, CO

39.847°N, 104.656°W · station DENthr · 155 years of record
60°F
forecast low · Sep 2

7-Day Forecast

NWS NDFD forecast low temperature for Denver.
60°WED9/260°THU9/361°FRI9/463°SAT9/563°SUN9/661°MON9/761°TUE9/8

This Day in History

Every year's low 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 coldest on record.

Ranks

#127 / 154
coldest Sep 2 in 154 yrs of record

Coldest Sep 2 ever

40°F
set in 1874

Mildest Sep 2 ever

67°F
set in 1939
Forecast low 60°F — 127th coldest Sep 2 of 154 years · record 40°F (1874) · coldest since 2025.
1872: 56°F1873: 51°F1874: 40°F1875: 60°F1876: 51°F1877: 54°F1878: 58°F1879: 53°F1880: 48°F1881: 54°F1882: 51°F1883: 60°F1884: 63°F1885: 50°F1886: 48°F1887: 56°F1888: 50°F1889: 46°F1890: 58°F1891: 46°F1892: 57°F1893: 52°F1894: 60°F1895: 60°F1896: 59°F1897: 55°F1898: 57°F1899: 57°F1900: 51°F1901: 59°F1902: 55°F1903: 61°F1904: 52°F1905: 46°F1906: 52°F1907: 54°F1908: 46°F1909: 59°F1910: 55°F1911: 53°F1912: 54°F1913: 57°F1914: 47°F1915: 53°F1916: 51°F1917: 55°F1918: 51°F1919: 58°F1920: 51°F1921: 57°F1922: 59°F1923: 51°F1924: 52°F1925: 61°F1926: 56°F1927: 56°F1928: 50°F1929: 63°F1930: 49°F1931: 52°F1932: 49°F1933: 57°F1934: 44°F1935: 52°F1936: 62°F1937: 62°F1938: 54°F1939: 67°F1940: 62°F1941: 56°F1942: 55°F1943: 58°F1944: 53°F1945: 65°F1946: 54°F1947: 63°F1948: 65°F1949: 58°F1950: 57°F1951: 53°F1952: 45°F1953: 49°F1954: 60°F1955: 58°F1956: 46°F1957: 47°F1958: 59°F1959: 47°F1960: 56°F1961: 42°F1962: 48°F1963: 51°F1964: 58°F1965: 54°F1966: 56°F1967: 54°F1968: 47°F1969: 54°F1970: 55°F1971: 59°F1972: 47°F1973: 43°F1974: 42°F1975: 55°F1976: 46°F1977: 60°F1978: 55°F1979: 50°F1980: 47°F1981: 58°F1982: 51°F1983: 61°F1984: 56°F1985: 59°F1986: 51°F1987: 57°F1988: 61°F1989: 55°F1990: 59°F1991: 56°F1992: 50°F1993: 50°F1994: 53°F1995: 64°F1996: 60°F1997: 57°F1998: 50°F1999: 55°F2000: 55°F2001: 63°F2002: 53°F2003: 55°F2004: 53°F2005: 55°F2006: 45°F2007: 59°F2008: 54°F2009: 58°F2010: 47°F2011: 57°F2012: 64°F2013: 60°F2014: 46°F2015: 63°F2016: 54°F2017: 58°F2018: 57°F2019: 66°F2020: 51°F2021: 59°F2022: 64°F2023: 67°F2024: 56°F2025: 52°F60° forecast40455055606570188018901900191019201930194019501960197019801990200020102020
📖 Denver's full Climate Almanac →

The Numbers

Forecast low · Sep 260°F
Coldest this date since2025
This-date record40°F
This-date rank#127 of 154
Coldest at any time since2026
All-time record-29°F (1875)
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

Cold Streaks

Current run

0 days
consecutive days with a low ≤ 32°F

Longest ever

125 days
record run, ended Mar 5 2001

So far in 2026

68 days
days with a low ≤ 32°F this year

Climate Normals

Normal low & low by month, from Denver's own 1991–2020 record. Today's normal low: 55°F · forecast is +5° 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 low 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 low

2026 So Far

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

Every Day Since 1872

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

Days Below the Mark

How many days a year hit a given low at Denver — counted through Sep 2 each year, so you can see whether 2026 is running cold. Pick a threshold:
68 days ≤32°F so far in 2026 — the 153rd most in 155 years. Normal for this point: 90. Record: 113 in 1968.

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