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Almanac · Spencer, IA · Climate Almanac
📖 Climate Almanac

Spencer, IA

43.168°N, 95.210°W · station SPWthr · 1895–2026 · 132 years of record

The Almanac Ribbon

Every day of the year at Spencer: the record high and record low ever set (outer lines), the everyday normal range (shaded band), and the full record envelope behind it.
-40-20020406080100120JanFebMarAprMayJunJulAugSepOctNovDechottestsince.com · coldestsince.com
Record high Record low Normal high–low band (1991–2020) hottest ever 113°F · coldest ever -38°F

Records by Month

MonthRecord highRecord low
Jan66°Jan 25, 1944-38°Jan 12, 1912
Feb74°Feb 26, 2024-36°Feb 9, 1899
Mar89°Mar 21, 2026-28°Mar 11, 1948
Apr95°Apr 29, 20070°Apr 3, 1975
May109°May 30, 193420°May 3, 1967
Jun106°Jun 10, 193330°Jun 11, 1896
Jul113°Jul 17, 193640°Jul 30, 1971
Aug111°Aug 3, 193034°Aug 20, 1950
Sep102°Sep 2, 192521°Sep 28, 1942
Oct95°Oct 1, 2023-8°Oct 29, 1925
Nov80°Nov 8, 1999-17°Nov 14, 1959
Dec67°Dec 1, 1998-30°Dec 26, 1914
All-time113°Jul 17, 1936-38°Jan 12, 1912

Longest-Standing Records

The daily records that have held the longest — set in the earliest years and never beaten since. Highs power Spencer on hottestsince.com; lows on coldestsince.com.

Oldest-standing record highs

DateRecordSetStanding
Mar 2883°1895131yrs
Sep 1094°1895131yrs
Sep 1699°1895131yrs
Sep 1896°1895131yrs
Jan 2953°1896130yrs
Feb 2561°1896130yrs
Dec 3146°1896130yrs
Sep 2791°1897129yrs
Jun 898°1911115yrs
Jun 2399°1911115yrs
Jul 1104°1911115yrs
Jul 3106°1911115yrs

Oldest-standing record lows

DateRecordSetStanding
Feb 7-24°1895131yrs
May 1930°1895131yrs
May 2026°1895131yrs
May 2532°1895131yrs
Jun 2735°1895131yrs
Jun 2839°1895131yrs
Aug 1145°1895131yrs
Aug 1437°1895131yrs
Jun 1130°1896130yrs
Jul 2448°1896130yrs
Oct 2412°1896130yrs
Nov 11-3°1896130yrs

All-Time Extremes

Hottest ever

113°F
1936-07-17

Coldest ever

-38°F
1912-01-12

Longest heat streak

24 days
≥ 90°F · ended 1935-08-08

The Warming Trend

Spencer's annual mean temperature, each year a stripe — blue below the 1991–2020 average, red above.
1896: 47.0°F (+0.6 vs 1991–2020)1897: 44.9°F (-1.5 vs 1991–2020)1898: 45.3°F (-1.1 vs 1991–2020)1912: 46.6°F (+0.2 vs 1991–2020)1914: 45.4°F (-1.0 vs 1991–2020)1919: 47.1°F (+0.7 vs 1991–2020)1920: 45.1°F (-1.3 vs 1991–2020)1921: 50.4°F (+4.0 vs 1991–2020)1922: 47.8°F (+1.4 vs 1991–2020)1923: 47.0°F (+0.6 vs 1991–2020)1924: 44.3°F (-2.1 vs 1991–2020)1925: 47.1°F (+0.7 vs 1991–2020)1926: 46.6°F (+0.2 vs 1991–2020)1927: 46.2°F (-0.2 vs 1991–2020)1928: 47.6°F (+1.2 vs 1991–2020)1929: 45.0°F (-1.4 vs 1991–2020)1930: 48.9°F (+2.5 vs 1991–2020)1931: 52.0°F (+5.6 vs 1991–2020)1932: 46.0°F (-0.4 vs 1991–2020)1933: 48.9°F (+2.5 vs 1991–2020)1934: 49.3°F (+2.9 vs 1991–2020)1935: 46.8°F (+0.4 vs 1991–2020)1936: 46.3°F (-0.1 vs 1991–2020)1937: 45.3°F (-1.1 vs 1991–2020)1938: 48.8°F (+2.4 vs 1991–2020)1939: 49.3°F (+2.9 vs 1991–2020)1940: 45.8°F (-0.6 vs 1991–2020)1941: 49.0°F (+2.6 vs 1991–2020)1942: 47.3°F (+0.9 vs 1991–2020)1943: 46.3°F (-0.1 vs 1991–2020)1944: 51.9°F (+5.5 vs 1991–2020)1945: 44.7°F (-1.7 vs 1991–2020)1946: 46.2°F (-0.2 vs 1991–2020)1947: 44.9°F (-1.5 vs 1991–2020)1948: 45.2°F (-1.2 vs 1991–2020)1949: 43.4°F (-3.0 vs 1991–2020)1951: 42.0°F (-4.4 vs 1991–2020)1952: 45.2°F (-1.2 vs 1991–2020)1953: 46.8°F (+0.4 vs 1991–2020)1954: 44.2°F (-2.2 vs 1991–2020)1955: 45.9°F (-0.5 vs 1991–2020)1956: 45.2°F (-1.2 vs 1991–2020)1957: 45.8°F (-0.6 vs 1991–2020)1958: 45.9°F (-0.5 vs 1991–2020)1959: 45.1°F (-1.3 vs 1991–2020)1960: 44.6°F (-1.8 vs 1991–2020)1961: 44.5°F (-1.9 vs 1991–2020)1962: 44.9°F (-1.5 vs 1991–2020)1963: 46.8°F (+0.4 vs 1991–2020)1964: 46.6°F (+0.2 vs 1991–2020)1965: 44.7°F (-1.7 vs 1991–2020)1966: 44.6°F (-1.8 vs 1991–2020)1967: 48.4°F (+2.0 vs 1991–2020)1969: 42.2°F (-4.2 vs 1991–2020)1970: 44.4°F (-2.0 vs 1991–2020)1972: 39.9°F (-6.5 vs 1991–2020)1974: 46.6°F (+0.2 vs 1991–2020)1975: 45.1°F (-1.3 vs 1991–2020)1976: 44.8°F (-1.6 vs 1991–2020)1977: 49.6°F (+3.2 vs 1991–2020)1978: 51.1°F (+4.7 vs 1991–2020)1982: 50.1°F (+3.7 vs 1991–2020)1983: 45.5°F (-0.9 vs 1991–2020)1984: 45.9°F (-0.5 vs 1991–2020)1985: 43.8°F (-2.6 vs 1991–2020)1986: 46.9°F (+0.5 vs 1991–2020)1987: 49.7°F (+3.3 vs 1991–2020)1988: 46.7°F (+0.3 vs 1991–2020)1989: 44.8°F (-1.6 vs 1991–2020)1990: 47.5°F (+1.1 vs 1991–2020)1991: 46.6°F (+0.2 vs 1991–2020)1993: 43.4°F (-3.0 vs 1991–2020)1994: 45.6°F (-0.8 vs 1991–2020)1995: 45.9°F (-0.5 vs 1991–2020)1996: 43.4°F (-3.0 vs 1991–2020)1997: 44.9°F (-1.5 vs 1991–2020)1998: 48.7°F (+2.3 vs 1991–2020)1999: 47.4°F (+1.0 vs 1991–2020)2000: 45.4°F (-1.0 vs 1991–2020)2001: 46.2°F (-0.2 vs 1991–2020)2002: 46.6°F (+0.2 vs 1991–2020)2003: 46.0°F (-0.4 vs 1991–2020)2004: 47.3°F (+0.9 vs 1991–2020)2005: 48.2°F (+1.8 vs 1991–2020)2006: 48.4°F (+2.0 vs 1991–2020)2007: 46.7°F (+0.3 vs 1991–2020)2008: 43.2°F (-3.2 vs 1991–2020)2009: 44.4°F (-2.0 vs 1991–2020)2010: 45.5°F (-0.9 vs 1991–2020)2011: 46.3°F (-0.1 vs 1991–2020)2012: 50.4°F (+4.0 vs 1991–2020)2013: 45.1°F (-1.3 vs 1991–2020)2014: 43.5°F (-2.9 vs 1991–2020)2015: 48.5°F (+2.1 vs 1991–2020)2016: 48.6°F (+2.2 vs 1991–2020)2017: 48.2°F (+1.8 vs 1991–2020)2018: 45.7°F (-0.7 vs 1991–2020)2019: 45.8°F (-0.6 vs 1991–2020)2020: 48.3°F (+1.9 vs 1991–2020)2021: 49.1°F (+2.7 vs 1991–2020)2022: 47.1°F (+0.7 vs 1991–2020)2023: 49.4°F (+3.0 vs 1991–2020)2024: 50.9°F (+4.5 vs 1991–2020)2025: 48.1°F (+1.7 vs 1991–2020)18962025annual mean temperature · warmer ▲ redder

Days Above / Below the Mark

15 days ≥90°F in 2026 · normal 20 · record 70 in 1936
100 days ≤32°F in 2026 · normal 140 · record 187 in 1952

The Full Record

Every day of the year, record and normal high & low with the year each record was set. Type to filter, click a column to sort.
Show me the data — the full daily record
DateRec HighYrNorm HiNorm LoRec LowYr
Jan 149°195426°8°-28°1974
Jan 252°193126°8°-37°2010
Jan 350°202226°8°-31°2010
Jan 449°196426°8°-33°2010
Jan 558°201225°7°-32°1924
Jan 650°193325°7°-24°1988
Jan 757°200325°7°-33°1912
Jan 859°200225°7°-21°1970
Jan 955°195825°6°-24°1974
Jan 1057°201225°6°-22°1937
Jan 1150°202225°6°-21°1974
Jan 1253°202625°6°-38°1912
Jan 1354°198025°6°-21°1912
Jan 1450°191425°6°-24°1972
Jan 1558°199025°6°-27°1972
Jan 1646°196125°6°-26°1977
Jan 1747°194425°6°-22°1930
Jan 1850°194425°6°-26°1967
Jan 1955°192125°6°-30°1970
Jan 2056°194425°6°-28°1962
Jan 2151°194425°6°-32°1970
Jan 2252°198125°6°-30°1936
Jan 2358°198126°7°-24°1935
Jan 2466°198126°7°-23°2008
Jan 2566°194426°8°-25°1897
Jan 2664°200226°8°-24°1897
Jan 2756°200226°8°-23°1897
Jan 2857°202526°8°-25°1915
Jan 2953°189627°9°-26°1952
Jan 3062°202527°9°-25°2019
Jan 3156°193127°9°-24°1936
Feb 154°193127°9°-23°1996
Feb 258°192427°9°-28°1916
Feb 356°192827°9°-23°1996
Feb 463°200527°9°-25°1899
Feb 558°196327°9°-26°1936
Feb 653°198728°9°-22°1899
Feb 762°198728°9°-24°1895
Feb 854°195428°9°-31°1899
Feb 963°202628°9°-36°1899
Feb 1061°197728°10°-25°2014
Feb 1162°197729°10°-34°1899
Feb 1260°197629°10°-27°1899
Feb 1358°192130°11°-20°2025
Feb 1464°202630°11°-26°1936
Feb 1566°192130°11°-25°1930
Feb 1664°198131°12°-31°1936
Feb 1765°198131°12°-24°1958
Feb 1863°198131°13°-20°2006
Feb 1964°201731°13°-26°1929
Feb 2065°198131°13°-21°2008
Feb 2166°201732°13°-19°1936
Feb 2267°201732°14°-17°1947
Feb 2365°200232°14°-14°1993
Feb 2462°197632°14°-18°1913
Feb 2561°189633°14°-19°2010
Feb 2674°202433°14°-22°1950
Feb 2762°202633°15°-17°1899
Feb 2865°200034°15°-29°1962
Feb 2968°192334°15°-25°1962
Mar 170°197434°16°-19°1913
Mar 269°202435°16°-18°2014
Mar 368°202435°16°-9°2019
Mar 471°200036°17°-21°2003
Mar 574°201737°18°-22°1960
Mar 674°198738°18°-11°1960
Mar 777°200038°19°-14°1920
Mar 869°202139°20°-9°1995
Mar 972°196740°21°-7°1948
Mar 1067°201241°21°-17°1948
Mar 1179°202441°22°-28°1948
Mar 1272°202442°23°-18°1975
Mar 1375°201242°24°-18°1975
Mar 1477°193543°24°-13°1960
Mar 1577°196644°24°-3°1923
Mar 1682°201244°25°-5°2026
Mar 1781°201244°26°-12°1923
Mar 1883°201245°26°-14°1923
Mar 1977°193446°27°-2°1951
Mar 2089°202646°27°-11°1951
Mar 2181°193947°28°-4°1912
Mar 2282°193948°28°-10°1899
Mar 2387°192848°28°-1°1965
Mar 2482°192849°29°1°1952
Mar 2582°200749°29°-2°1965
Mar 2676°197850°29°-6°1970
Mar 2788°202550°29°-6°1970
Mar 2883°189551°29°-1°1969
Mar 2986°202652°30°0°1969
Mar 3084°197852°30°3°1923
Mar 3184°201053°30°6°1936
Apr 190°201253°30°3°1924
Apr 288°201254°30°0°1975
Apr 389°192954°31°5°1899
Apr 488°199154°31°12°1920
Apr 589°199155°31°8°1982
Apr 685°193155°31°10°1990
Apr 790°193155°32°8°1936
Apr 889°197756°32°9°2000
Apr 987°193056°32°12°1928
Apr 1085°202356°33°13°1939
Apr 1192°202357°34°13°1940
Apr 1291°202357°34°16°2016
Apr 1389°195457°34°15°2020
Apr 1492°200258°35°10°1928
Apr 1585°196758°35°12°2020
Apr 1689°200459°36°14°1928
Apr 1789°198560°36°15°1953
Apr 1888°198760°36°14°2018
Apr 1984°198960°36°17°2013
Apr 2089°198061°37°22°1956
Apr 2192°198061°37°22°1936
Apr 2291°196061°38°18°1936
Apr 2388°193962°38°18°1956
Apr 2488°196262°38°20°1956
Apr 2588°198762°38°20°2022
Apr 2687°197762°38°23°1931
Apr 2789°197063°39°22°1926
Apr 2895°200764°39°21°1958
Apr 2993°200764°40°25°2005
Apr 3097°202165°41°21°1956
May 189°196565°41°23°1967
May 292°194965°42°20°1967
May 388°193966°42°25°1967
May 492°195266°43°26°1954
May 599°193466°43°22°1925
May 692°193467°43°24°1954
May 798°193467°44°27°1925
May 893°193468°44°24°1923
May 995°201169°44°26°1980
May 1094°202269°45°23°1946
May 1197°202270°46°23°2013
May 1291°198770°46°27°1899
May 13103°201370°46°27°1937
May 1494°200170°46°28°1921
May 1592°193470°47°24°2014
May 1698°193471°47°22°1925
May 17102°193471°48°30°2002
May 18100°193471°48°27°2002
May 1999°193472°48°30°1895
May 2092°193472°49°26°1895
May 2198°192573°50°25°1963
May 2292°196473°50°27°1963
May 23100°193973°51°31°1897
May 24101°196774°51°26°1925
May 2596°201874°51°32°1895
May 26100°201874°52°34°1971
May 2799°201874°52°29°1947
May 28105°193475°52°25°1947
May 29109°193475°53°31°1897
May 30106°193476°53°28°1897
May 3197°193476°53°36°1972
Jun 1102°193477°54°38°1964
Jun 2100°202077°54°35°1945
Jun 399°197778°55°32°1945
Jun 4100°193478°55°36°1935
Jun 5102°193378°55°35°1897
Jun 699°201178°56°35°1935
Jun 7103°198579°56°34°1897
Jun 898°191179°56°35°1915
Jun 9106°193380°57°42°1912
Jun 10101°193380°57°38°1928
Jun 1196°192680°58°30°1896
Jun 1299°198781°58°38°1933
Jun 1397°192081°58°40°1927
Jun 1497°193381°58°37°1989
Jun 15100°193381°59°39°1968
Jun 1698°202181°59°39°1915
Jun 1798°193381°59°41°1912
Jun 18100°193382°59°44°1926
Jun 19101°197482°59°40°2004
Jun 2099°193082°60°43°1912
Jun 21104°198882°60°40°1972
Jun 22102°192282°60°41°1972
Jun 2399°191182°60°46°1920
Jun 24102°198883°60°41°1958
Jun 25101°193383°60°40°1926
Jun 26103°193483°60°43°2004
Jun 27102°193183°60°35°1895
Jun 28101°193183°60°39°1895
Jun 29104°193383°60°46°1924
Jun 30102°192583°60°43°1924
Jul 1104°191184°61°45°1924
Jul 2102°199084°61°43°1967
Jul 3106°191184°61°42°1922
Jul 4112°193684°61°43°1915
Jul 5106°193684°61°46°1950
Jul 6104°193684°61°45°1924
Jul 7102°193084°61°46°2023
Jul 8106°193084°62°48°1953
Jul 9105°193084°62°45°1945
Jul 10106°193685°62°46°1926
Jul 11107°193685°62°48°1975
Jul 12107°193685°62°45°1926
Jul 13110°193685°62°43°1930
Jul 14112°193685°62°45°1924
Jul 15105°193685°62°44°1958
Jul 16109°193685°62°45°2020
Jul 17113°193685°62°46°2009
Jul 18103°192685°62°42°2009
Jul 19104°192685°62°47°1950
Jul 20101°193485°62°46°1947
Jul 21101°194084°62°41°1925
Jul 22106°193684°62°45°2026
Jul 23102°193484°61°46°1948
Jul 24106°194084°61°48°1896
Jul 25103°193084°61°44°1962
Jul 26110°193084°61°43°2013
Jul 27100°193283°60°40°2013
Jul 28104°194783°60°44°2013
Jul 29102°193183°60°40°1971
Jul 30104°193183°60°43°1974
Jul 31101°198883°60°46°1898
Aug 1104°193083°60°45°1927
Aug 2111°193083°60°41°1927
Aug 3102°193483°60°45°1912
Aug 4100°193783°60°43°1957
Aug 598°193082°60°42°1948
Aug 698°193582°60°43°1989
Aug 7101°193082°59°44°1976
Aug 8102°194782°59°38°1927
Aug 9104°193682°59°44°1967
Aug 1098°193582°59°45°1931
Aug 1197°193681°59°45°1895
Aug 1299°196581°59°44°1952
Aug 1395°192882°59°40°1964
Aug 1499°193781°58°37°1895
Aug 15107°193681°58°43°2004
Aug 16101°198881°58°43°1897
Aug 17100°198881°58°39°2012
Aug 18105°193682°58°40°1967
Aug 1999°194782°58°34°1950
Aug 2098°194782°58°40°1897
Aug 2198°202382°58°36°2004
Aug 2297°202382°58°41°1920
Aug 2399°192982°58°36°1934
Aug 24108°193682°58°38°1928
Aug 2599°193682°58°40°1934
Aug 2698°192682°58°41°1967
Aug 2798°198482°57°36°1935
Aug 28102°192182°57°38°1946
Aug 2997°194182°57°37°1915
Aug 3096°200081°57°36°1967
Aug 3199°191181°56°33°1949
Sep 1102°192580°56°37°1946
Sep 2102°192580°55°31°1974
Sep 3101°192580°55°35°1952
Sep 498°191379°54°35°1962
Sep 599°192279°54°34°2025
Sep 698°193179°54°34°2025
Sep 799°194778°53°35°1956
Sep 897°191278°53°38°1943
Sep 999°193178°52°35°1924
Sep 1094°189577°52°32°1955
Sep 1198°193977°52°31°1955
Sep 12100°193976°51°31°1940
Sep 1399°193976°51°31°1949
Sep 1499°193975°50°28°2007
Sep 1594°195575°50°30°1934
Sep 1699°189575°49°30°1897
Sep 1793°194774°49°26°1929
Sep 1896°189574°48°27°1991
Sep 19101°202274°48°27°1897
Sep 2097°193773°47°24°1999
Sep 2194°201773°47°23°1913
Sep 2295°193673°47°28°1983
Sep 2390°193572°46°22°2012
Sep 2490°193372°46°27°1926
Sep 2591°195672°45°26°1947
Sep 2691°195671°44°24°1984
Sep 2791°189770°44°21°1942
Sep 2895°202370°44°22°1945
Sep 2996°202370°43°23°1939
Sep 3095°202370°43°24°1975
Oct 193°199769°43°17°1974
Oct 292°200669°42°24°1987
Oct 391°202568°42°20°1935
Oct 493°196368°41°23°2020
Oct 591°196367°41°15°1935
Oct 687°199366°40°18°1974
Oct 791°201066°40°13°2012
Oct 885°201065°40°14°2000
Oct 990°193064°39°17°2000
Oct 1092°192864°39°17°1987
Oct 1189°197564°38°21°1922
Oct 1290°197564°38°19°2012
Oct 1388°194763°38°15°1937
Oct 1489°195862°37°21°2022
Oct 1584°192162°37°20°1943
Oct 1682°194761°36°19°1922
Oct 1785°195060°36°7°2022
Oct 1889°200360°35°12°2022
Oct 1986°194759°35°18°1925
Oct 2084°202458°35°13°1930
Oct 2185°202458°34°18°1945
Oct 2284°202257°34°11°1976
Oct 2381°198957°34°16°1999
Oct 2486°192756°33°12°1896
Oct 2585°192755°33°14°2001
Oct 2683°194055°32°10°1925
Oct 2780°192254°32°-1°1925
Oct 2884°193753°31°-8°1925
Oct 2988°195053°31°-8°1925
Oct 3079°195052°30°10°1949
Oct 3183°194452°30°8°1951
Nov 178°200552°30°5°1951
Nov 278°197851°29°0°1991
Nov 380°202051°28°-4°1991
Nov 480°202050°28°-2°1951
Nov 577°202049°27°-4°1991
Nov 679°202049°27°-7°1991
Nov 780°199948°26°3°1991
Nov 874°202048°26°0°1936
Nov 976°194948°26°-3°1986
Nov 1072°191247°26°-12°1986
Nov 1172°191247°26°-3°1896
Nov 1276°199946°25°-6°1919
Nov 1374°202546°25°-17°1959
Nov 1472°195345°24°-7°1940
Nov 1574°200144°24°-5°2014
Nov 1671°200144°23°-7°1959
Nov 1769°199943°23°-1°1986
Nov 1864°200342°23°-4°1914
Nov 1972°193342°22°-1°1932
Nov 2065°200142°22°-10°1937
Nov 2170°201241°21°-5°1935
Nov 2263°202141°21°-7°1898
Nov 2366°201740°21°-11°1985
Nov 2465°191440°20°-10°1977
Nov 2567°196039°20°-11°1898
Nov 2673°199838°19°-7°1993
Nov 2762°194138°18°-5°1959
Nov 2868°202137°18°-14°1897
Nov 2960°192236°17°-10°1955
Nov 3067°199836°17°-10°1897
Dec 163°199835°16°-17°1919
Dec 263°199835°16°-16°1919
Dec 359°201234°15°-19°2025
Dec 461°200134°15°-13°2005
Dec 565°193934°15°-17°2005
Dec 660°202333°15°-21°1972
Dec 759°194633°14°-20°1958
Dec 865°193932°14°-27°1958
Dec 960°193032°13°-22°1919
Dec 1058°191332°13°-19°2013
Dec 1155°192131°13°-16°1958
Dec 1260°192131°13°-21°1958
Dec 1357°202331°13°-20°1914
Dec 1464°202131°13°-19°1922
Dec 1561°193931°13°-22°1914
Dec 1664°193930°13°-22°1922
Dec 1759°192330°12°-22°1983
Dec 1855°197630°12°-27°2016
Dec 1950°194130°12°-23°1961
Dec 2055°194129°12°-23°1989
Dec 2152°194129°12°-25°1989
Dec 2256°202029°12°-23°1983
Dec 2356°202328°11°-23°1983
Dec 2452°202328°11°-23°1924
Dec 2552°195928°11°-30°1914
Dec 2656°193627°10°-28°1951
Dec 2758°200227°10°-20°1993
Dec 2853°202427°9°-26°1924
Dec 2952°192926°9°-20°1973
Dec 3060°200426°9°-24°1946
Dec 3146°189626°8°-18°1968
Forecast & records → Spencer station On This Day → national almanac
Data: NOAA/NWS Threaded Extremes (threadex) · normals 1991–2020 · part of Weather Trader