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Iowa · THREADEX · 1878–2026

Des Moines, IA

41.534°N, 93.653°W · station DSMthr · 149 years of record
95°F
forecast high · Sep 1

7-Day Forecast

NWS NDFD forecast high temperature for Des Moines.
95°TUE9/193°WED9/291°THU9/394°FRI9/495°SAT9/591°SUN9/689°MON9/7

This Day in History

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

Ranks

#8 / 148
warmest Sep 1 in 148 yrs of record

Warmest Sep 1 ever

99°F
set in 1913

Coolest Sep 1 ever

59°F
set in 1935
Forecast high 95°F — 8th warmest Sep 1 of 148 years · record 99°F (1913) · warmest since 2011.
1878: 86°F1879: 78°F1880: 78°F1881: 84°F1882: 64°F1883: 90°F1884: 83°F1885: 66°F1886: 63°F1887: 85°F1888: 77°F1889: 86°F1890: 85°F1891: 87°F1892: 78°F1893: 74°F1894: 93°F1895: 75°F1896: 77°F1897: 98°F1898: 91°F1899: 89°F1900: 85°F1901: 82°F1902: 75°F1903: 78°F1904: 80°F1905: 88°F1906: 82°F1907: 86°F1908: 81°F1909: 63°F1910: 71°F1911: 97°F1912: 96°F1913: 99°F1914: 75°F1915: 78°F1916: 75°F1917: 78°F1918: 85°F1919: 81°F1920: 80°F1921: 87°F1922: 93°F1923: 75°F1924: 80°F1925: 91°F1926: 86°F1927: 89°F1928: 71°F1929: 88°F1930: 82°F1931: 79°F1932: 76°F1933: 89°F1934: 79°F1935: 59°F1936: 91°F1937: 94°F1938: 86°F1939: 84°F1940: 74°F1941: 84°F1942: 88°F1943: 80°F1944: 74°F1945: 91°F1946: 69°F1947: 85°F1948: 86°F1949: 73°F1950: 87°F1951: 69°F1952: 82°F1953: 97°F1954: 87°F1955: 82°F1956: 75°F1957: 89°F1958: 76°F1959: 81°F1960: 92°F1961: 83°F1962: 80°F1963: 75°F1964: 81°F1965: 74°F1966: 87°F1967: 72°F1968: 70°F1969: 75°F1970: 89°F1971: 90°F1972: 81°F1973: 84°F1974: 64°F1975: 93°F1976: 90°F1977: 82°F1978: 84°F1979: 81°F1980: 85°F1981: 68°F1982: 84°F1983: 88°F1984: 90°F1985: 86°F1986: 83°F1987: 79°F1988: 84°F1989: 80°F1990: 89°F1991: 82°F1992: 76°F1993: 76°F1994: 74°F1995: 83°F1996: 79°F1997: 89°F1998: 80°F1999: 84°F2000: 97°F2001: 78°F2002: 87°F2003: 77°F2004: 83°F2005: 87°F2006: 79°F2007: 80°F2008: 85°F2009: 72°F2010: 82°F2011: 96°F2012: 92°F2013: 86°F2014: 81°F2015: 90°F2016: 83°F2017: 76°F2018: 87°F2019: 79°F2020: 79°F2021: 80°F2022: 85°F2023: 87°F2024: 84°F2025: 77°F95° forecast556065707580859095100188018901900191019201930194019501960197019801990200020102020
📖 Des Moines's full Climate Almanac →

The Numbers

Forecast high · Sep 195°F
Hottest this date since2011
This-date record99°F
This-date rank#8 of 148
Hottest at any time since2026
All-time record110°F (1918)
Odds to tie/break0.0% (daily)
Period of record1878–2026

Record Book

The hottest and coldest ever recorded at Des Moines in each calendar month, and for the whole 1878–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan67°FJan 8, 2003-30°FJan 5, 1884
Feb78°FFeb 24, 1930-26°FFeb 2, 1905
Mar91°FMar 29, 1986-22°FMar 1, 1962
Apr93°FApr 22, 19809°FApr 3, 1975
May105°FMay 30, 193426°FMay 4, 1907
Jun103°FJun 6, 193337°FJun 1, 1889
Jul110°FJul 25, 193647°FJul 30, 1971
Aug110°FAug 4, 191840°FAug 24, 1891
Sep101°FSep 3, 193926°FSep 30, 1899
Oct95°FOct 5, 19637°FOct 28, 1925
Nov82°FNov 1, 1938-10°FNov 29, 1891
Dec74°FDec 15, 2021-22°FDec 23, 1989
All-time110°FAug 4, 1918-30°FJan 5, 1884

2026 Records So Far

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

Record Highs in 2026

6 broke
plus 2 tied — daily record highs set this year
Monthly high record this year: Mar (91°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

83°F
record high minimum — the night it never cooled · Jul 26, 1930

Coldest high ever

-14°F
record low maximum — the day it never warmed · Jan 12, 1912
MonthWarmest lowColdest high
Jan50°FJan 25, 1944-14°FJan 12, 1912
Feb51°FFeb 20, 1930-10°FFeb 8, 1899
Mar65°FMar 19, 19212°FMar 10, 1948
Apr69°FApr 21, 190225°FApr 2, 1936
May79°FMay 31, 193435°FMay 3, 2013
Jun81°FJun 28, 201248°FJun 3, 1945
Jul83°FJul 26, 193063°FJul 5, 1909
Aug83°FAug 3, 193056°FAug 26, 1944
Sep80°FSep 5, 189942°FSep 26, 1942
Oct73°FOct 1, 197123°FOct 29, 1925
Nov62°FNov 2, 19387°FNov 27, 1887
Dec54°FDec 4, 2001-12°FDec 24, 1983
All-time83°FJul 26, 1930-14°FJan 12, 1912

Hot Streaks

Current run

0 days
consecutive days with a high ≥ 90°F

Longest ever

25 days
record run, ended Jul 19 1936

So far in 2026

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

Climate Normals

Normal high & low by month, from Des Moines's own 1991–2020 record. Today's normal high: 83°F · forecast is +12° vs normal.
Jan: 31°FJan: 14°FFeb: 36°FFeb: 18°FMar: 49°FMar: 30°FApr: 62°FApr: 41°FMay: 72°FMay: 53°FJun: 82°FJun: 63°FJul: 86°FJul: 67°FAug: 84°FAug: 65°FSep: 77°FSep: 56°FOct: 64°FOct: 43°FNov: 49°FNov: 31°FDec: 36°FDec: 20°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:40 AM
Sunset6:48 PM
Solar noon12:14 PM
Daylight13h 08m · losing 18 min/wk
Local standard time (no DST), level horizon.

Location

41.53°N, 93.65°W

Nearby Stations

Waterloo, IA95 mi NECedar Rapids, IA102 mi EOmaha, NE117 mi WSpencer, IA138 mi NWBurlington, IA141 mi ESioux City, IA152 mi W

The Last 6 Weeks

Des Moines'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.
Des Moines, IA — last six weeks of daily high

2026 So Far

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

Every Day Since 1878

Each cell is one day's high at Des Moines, coloured by temperature — 149 years of record, so heat waves read as warm streaks and cold snaps as blue.
Des Moines, IA daily high heat map 1878–2026

Days Above the Mark

How many days a year hit a given high at Des Moines — counted through Sep 1 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 81st most in 149 years. Normal for this point: 23. Record: 68 in 1934.

Share Card

A ready-to-share summary of Des Moines's outlook — post it, or link this page.
Des Moines, IA hot share card
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