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Iowa · THREADEX · 1895–2026

Spencer, IA

43.168°N, 95.210°W · station SPWthr · 132 years of record
61°F
forecast low · Sep 8

7-Day Forecast

NWS NDFD forecast low temperature for Spencer.
65°WED9/268°THU9/370°FRI9/468°SAT9/567°SUN9/663°MON9/761°TUE9/8

This Day in History

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

Ranks

#90 / 112
coldest Sep 8 in 112 yrs of record

Coldest Sep 8 ever

35°F
set in 1956

Mildest Sep 8 ever

73°F
set in 1931
Forecast low 61°F — 90th coldest Sep 8 of 112 years · record 35°F (1956) · coldest since 2025.
1895: 49°F1896: 48°F1897: 65°F1898: 42°F1911: 47°F1912: 71°F1913: 59°F1915: 57°F1919: 70°F1920: 48°F1921: 58°F1922: 64°F1923: 56°F1924: 51°F1925: 62°F1926: 59°F1927: 65°F1928: 52°F1929: 47°F1930: 55°F1931: 73°F1932: 46°F1933: 72°F1934: 45°F1935: 49°F1936: 60°F1937: 60°F1938: 68°F1939: 52°F1940: 64°F1941: 59°F1942: 55°F1943: 44°F1944: 42°F1945: 55°F1946: 53°F1947: 69°F1948: 49°F1949: 41°F1950: 40°F1951: 57°F1952: 59°F1953: 56°F1954: 45°F1955: 53°F1956: 35°F1957: 44°F1958: 46°F1959: 70°F1960: 55°F1961: 65°F1962: 54°F1963: 47°F1964: 65°F1965: 53°F1966: 52°F1967: 50°F1969: 48°F1970: 46°F1971: 58°F1972: 50°F1973: 59°F1974: 58°F1975: 45°F1976: 72°F1977: 60°F1978: 66°F1979: 50°F1981: 55°F1982: 60°F1983: 62°F1984: 57°F1985: 57°F1986: 36°F1987: 48°F1988: 52°F1989: 56°F1990: 59°F1991: 69°F1993: 46°F1994: 56°F1995: 39°F1996: 57°F1997: 62°F1998: 39°F1999: 48°F2000: 45°F2001: 52°F2002: 62°F2003: 52°F2004: 42°F2005: 60°F2006: 57°F2007: 47°F2008: 45°F2009: 61°F2010: 38°F2011: 45°F2012: 47°F2013: 68°F2014: 57°F2015: 54°F2016: 63°F2017: 46°F2018: 48°F2019: 59°F2020: 49°F2021: 48°F2022: 64°F2023: 51°F2024: 43°F2025: 47°F61° forecast3540455055606570751920193019401950196019701990200020102020
📖 Spencer's full Climate Almanac →

The Numbers

Forecast low · Sep 861°F
Coldest this date since2025
This-date record35°F
This-date rank#90 of 112
Coldest at any time since2026
All-time record-38°F (1912)
Odds to tie/break0.0% (daily)
Period of record1895–2026

Record Book

The hottest and coldest ever recorded at Spencer in each calendar month, and for the whole 1895–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan66°FJan 25, 1944-38°FJan 12, 1912
Feb74°FFeb 26, 2024-36°FFeb 9, 1899
Mar89°FMar 21, 2026-28°FMar 11, 1948
Apr95°FApr 29, 20070°FApr 3, 1975
May109°FMay 30, 193420°FMay 3, 1967
Jun106°FJun 10, 193330°FJun 11, 1896
Jul113°FJul 17, 193640°FJul 30, 1971
Aug111°FAug 3, 193034°FAug 20, 1950
Sep102°FSep 2, 192521°FSep 28, 1942
Oct95°FOct 1, 2023-8°FOct 29, 1925
Nov80°FNov 8, 1999-17°FNov 14, 1959
Dec67°FDec 1, 1998-30°FDec 26, 1914
All-time113°FJul 17, 1936-38°FJan 12, 1912

2026 Records So Far

Records set or tied at Spencer 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 (89°F)

Record Lows in 2026

2 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

81°F
record high minimum — the night it never cooled · Jun 21, 2025

Coldest high ever

-18°F
record low maximum — the day it never warmed · Feb 8, 1899
MonthWarmest lowColdest high
Jan42°FJan 25, 1944-16°FJan 12, 1912
Feb47°FFeb 21, 1930-18°FFeb 8, 1899
Mar62°FMar 18, 2012-2°FMar 10, 1948
Apr66°FApr 27, 197023°FApr 2, 1975
May75°FMay 31, 193437°FMay 5, 1944
Jun81°FJun 21, 202546°FJun 1, 1946
Jul80°FJul 5, 193661°FJul 27, 1962
Aug78°FAug 3, 193055°FAug 25, 1987
Sep79°FSep 18, 189540°FSep 29, 1985
Oct70°FOct 3, 200520°FOct 28, 1925
Nov58°FNov 7, 20204°FNov 29, 1896
Dec49°FDec 2, 1962-16°FDec 24, 1983
All-time81°FJun 21, 2025-18°FFeb 8, 1899

Cold Streaks

Current run

0 days
consecutive days with a low ≤ 32°F

Longest ever

141 days
record run, ended Mar 24 1948

So far in 2026

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

Climate Normals

Normal low & low by month, from Spencer's own 1991–2020 record. Today's normal low: 53°F · forecast is +8° vs normal.
Jan: 25°FJan: 7°FFeb: 30°FFeb: 11°FMar: 43°FMar: 24°FApr: 58°FApr: 35°FMay: 71°FMay: 47°FJun: 81°FJun: 58°FJul: 84°FJul: 61°FAug: 82°FAug: 59°FSep: 76°FSep: 50°FOct: 61°FOct: 37°FNov: 44°FNov: 24°FDec: 30°FDec: 13°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:45 AM
Sunset6:56 PM
Solar noon12:20 PM
Daylight13h 11m · losing 20 min/wk
Local standard time (no DST), level horizon.

Location

43.17°N, 95.21°W

Nearby Stations

Sioux City, IA79 mi SWSioux Falls, SD82 mi WOmaha, NE133 mi SDes Moines, IA138 mi SENorfolk, NE139 mi SWRochester, MN145 mi E

The Last 6 Weeks

Spencer'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.
Spencer, IA — last six weeks of daily low

2026 So Far

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

Every Day Since 1895

Each cell is one day's low at Spencer, coloured by temperature — 132 years of record, so heat waves read as warm streaks and cold snaps as blue.
Spencer, IA daily low heat map 1895–2026

Days Below the Mark

How many days a year hit a given low at Spencer — counted through Sep 8 each year, so you can see whether 2026 is running cold. Pick a threshold:
100 days ≤32°F so far in 2026 — tied for the 50th most in 132 years. Normal for this point: 85. Record: 114 in 1956.

Share Card

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