41.534°N, 93.653°W · station DSMthr · 149 years of record
69°F
COLDEST SEP 8 SINCE 2025
forecast low · Sep 8
7-Day Forecast
NWS NDFD forecast low temperature for Des Moines.
This Day in History
Every year's low 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 coldest on record.
Ranks
#149 / 148
coldest Sep 2 in 148 yrs of record
Coldest Sep 2 ever
42°F
set in 1893
Mildest Sep 2 ever
74°F
set in 1897
Forecast low 76°F — 149th coldest Sep 2 of 148 years · record 42°F (1893) · coldest since 2025.
Ranks
#149 / 148
coldest Sep 3 in 148 yrs of record
Coldest Sep 3 ever
40°F
set in 1974
Mildest Sep 3 ever
73°F
set in 1925
Forecast low 77°F — 149th coldest Sep 3 of 148 years · record 40°F (1974) · coldest since 2025.
Ranks
#148 / 148
coldest Sep 4 in 148 yrs of record
Coldest Sep 4 ever
40°F
set in 1891
Mildest Sep 4 ever
76°F
set in 2014
Forecast low 75°F — 148th coldest Sep 4 of 148 years · record 40°F (1891) · coldest since 2025.
Ranks
#147 / 148
coldest Sep 5 in 148 yrs of record
Coldest Sep 5 ever
44°F
set in 1889
Mildest Sep 5 ever
80°F
set in 1899
Forecast low 74°F — 147th coldest Sep 5 of 148 years · record 44°F (1889) · coldest since 2025.
Ranks
#136 / 148
coldest Sep 6 in 148 yrs of record
Coldest Sep 6 ever
46°F
set in 1879
Mildest Sep 6 ever
76°F
set in 1922
Forecast low 72°F — 136th coldest Sep 6 of 148 years · record 46°F (1879) · coldest since 2025.
Ranks
#138 / 148
coldest Sep 7 in 148 yrs of record
Coldest Sep 7 ever
41°F
set in 1986
Mildest Sep 7 ever
76°F
set in 2016
Forecast low 70°F — 138th coldest Sep 7 of 148 years · record 41°F (1986) · coldest since 2025.
Ranks
#131 / 148
coldest Sep 8 in 148 yrs of record
Coldest Sep 8 ever
38°F
set in 1883
Mildest Sep 8 ever
73°F
set in 1931
Forecast low 69°F — 131st coldest Sep 8 of 148 years · record 38°F (1883) · coldest since 2025.
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.
Month
Record High
Record Low
Jan
67°FJan 8, 2003
-30°FJan 5, 1884
Feb
78°FFeb 24, 1930
-26°FFeb 2, 1905
Mar
91°FMar 29, 1986
-22°FMar 1, 1962
Apr
93°FApr 22, 1980
9°FApr 3, 1975
May
105°FMay 30, 1934
26°FMay 4, 1907
Jun
103°FJun 6, 1933
37°FJun 1, 1889
Jul
110°FJul 25, 1936
47°FJul 30, 1971
Aug
110°FAug 4, 1918
40°FAug 24, 1891
Sep
101°FSep 3, 1939
26°FSep 30, 1899
Oct
95°FOct 5, 1963
7°FOct 28, 1925
Nov
82°FNov 1, 1938
-10°FNov 29, 1891
Dec
74°FDec 15, 2021
-22°FDec 23, 1989
All-time
110°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
Month
Warmest low
Coldest high
Jan
50°FJan 25, 1944
-14°FJan 12, 1912
Feb
51°FFeb 20, 1930
-10°FFeb 8, 1899
Mar
65°FMar 19, 1921
2°FMar 10, 1948
Apr
69°FApr 21, 1902
25°FApr 2, 1936
May
79°FMay 31, 1934
35°FMay 3, 2013
Jun
81°FJun 28, 2012
48°FJun 3, 1945
Jul
83°FJul 26, 1930
63°FJul 5, 1909
Aug
83°FAug 3, 1930
56°FAug 26, 1944
Sep
80°FSep 5, 1899
42°FSep 26, 1942
Oct
73°FOct 1, 1971
23°FOct 29, 1925
Nov
62°FNov 2, 1938
7°FNov 27, 1887
Dec
54°FDec 4, 2001
-12°FDec 24, 1983
All-time
83°FJul 26, 1930
-14°FJan 12, 1912
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
114 days
record run, ended Mar 4 1904
So far in 2026
64 days
days with a low ≤ 32°F this year
Climate Normals
Normal low & low by month, from Des Moines's own 1991–2020 record. Today's normal low: 59°F · forecast is +10° vs normal.
Des Moines'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.
2026 So Far
Every day this year against Des Moines's own record — the record low, the normal, and the full span ever seen. A shareable look at where the year stands.