July 21, 1901 US temperatures over 100 degrees.
OTTAWA 5SW IL 112 MORRISON IL 111 WARRENTON 1 N MO 111 BRODHEAD WI 111 PARKER AZ 110 HARRISBURG IL 110 MT VERNON 3 NE IL 110 JEFFERSON CITY WTP MO 110 MEXICO MO 110 STEFFENVILLE MO 110 UNIONVILLE MO 110 BEAVER CITY NE 110 AURORA IL 109 CARLINVILLE IL 109 TOLEDO 3N IA 109 MARBLE HILL MO 109 ASHLAND NO 2 NE 109 FAIRBURY 5S NE 109 ANNA 2 NNE IL 108 DIXON 1 NW IL 108 LA HARPE IL 108 WALNUT IL 108 OOLITIC PURDUE EX FRM IN 108 ALBIA 3 NNE IA 108 CHARLES CITY IA 108 FAYETTE IA 108 LOGAN IA 108 MT PLEASANT 1 SSW IA 108 ATCHISON KS 108 HORTON KS 108 MANHATTAN KS 108 OTTAWA KS 108 AUBURN 5 ESE NE 108 HEBRON NE 108 CORINNE UT 108 ALEDO IL 107 MARENGO IL 107 MCLEANSBORO IL 107 MT CARROLL IL 107 SPARTA 1 W IL 107 CLARINDA IA 107 NEW HAMPTON IA 107 MCPHERSON KS 107 APPLETON CITY MO 107 GENEVA NE 107 SYRACUSE NE 107 WAKEFIELD NE 107 JEFFERSON OK 107 MILBANK 4 NW SD 107 FILLMORE UT 107 LANCASTER 4 WSW WI 107 PRAIRIE DU CHIEN WI 107 CORNING AR 106 DECATUR WTP IL 106 HILLSBORO IL 106 JACKSONVILLE 2E IL 106 MINONK IL 106 MONMOUTH IL 106 PANA IL 106 PAOLI IN 106 PRINCETON 1 W IN 106 SALEM IN 106 ALGONA 3 W IA 106 CLINTON #1 IA 106 FOREST CITY 2 NNE IA 106 ROCKWELL CITY IA 106 WASHINGTON IA 106 HAYS 1 S KS 106 LEAVENWORTH KS 106 MEDICINE LODGE KS 106 MINNEAPOLIS KS 106 SEDAN KS 106 GRAND MEADOW MN 106 DAVID CITY NE 106 GENOA 2 W NE 106 RED CLOUD NE 106 SEWARD NE 106 YORK NE 106 PORTAGE WI 106 NEWPORT AR 105 POCAHONTAS 1 AR 105 OLNEY 2S IL 105 COLUMBUS IN 105 FT DODGE 5NNW IA 105 INDIANOLA 2W IA 105 LE MARS IA 105 MT AYR IA 105 LAWRENCE KS 105 OLATHE 3E KS 105 HOPKINSVILLE KY 105 LAMAR 2W MO 105 LEXINGTON 3E MO 105 CRETE NE 105 MINDEN NE 105 OAKDALE NE 105 ENID OK 105 CANTON SD 105 HASKELL TX 105 GRAVETTE AR 104 PALESTINE IL 104 DELPHI 2 N IN 104 MARION 2 N IN 104 BELLE PLAINE IA 104 ESTHERVILLE 4E IA 104 ASHLAND KS 104 COLUMBUS KS 104 INDEPENDENCE KS 104 ALLIANCE 1WNW NE 104 FAIRMONT NE 104 TECUMSEH 1S NE 104 FINDLAY WPCC OH 104 BEAVER OK 104 CLAREMORE 2 ENE OK 104 KINGFISHER OK 104 MEEKER 5 W OK 104 VERMILLION 2 SE SD 104 DARLINGTON WI 104 WATERTOWN WI 104 CONWAY AR 103 FAYETTEVILLE EXP STN AR 103 PINE BLUFF AR 103 SCOTTSBURG IN 103 WHITESTOWN IN 103 STORM LAKE 2 E IA 103 GREENSBURG KY 103 SHELBYVILLE 1 E KY 103 CARUTHERSVILLE MO 103 CONCEPTION MO 103 HARTINGTON NE 103 IMPERIAL NE 103 SAINT PAUL NE 103 TEKAMAH NE 103 PAWHUSKA OK 103 PERRY OK 103 STILLWATER 2 W OK 103 TAHLEQUAH OK 103 UNION CITY TN 103 ST GEORGE UT 103 VIROQUA WI 103 BUCKEYE AZ 102 PRESCOTT 2 NNW AR 102 SUBIACO AR 102 PAYETTE ID 102 DANVILLE IL 102 MT VERNON IN 102 IOWA FALLS IA 102 SCOTT CITY KS 102 HENDERSON 8 SSW KY 102 NEOSHO MO 102 ALBION NE 102 BROKEN BOW 2 W NE 102 CURTIS 3NNE NE 102 HOLDREGE NE 102 DICKINSON EXP STN ND 102 GUTHRIE 5S OK 102 FORESTBURG 4 NNE SD 102 GANN VALLEY 4NW SD 102 GREENCASTLE 1 W IN 101 RUSHVILLE IN 101 WINAMAC 2SSE IN 101 MILAN 1 NW MN 101 ABERDEEN MS 101 HERNANDO MS 101 STATE UNIV MS 101 BRUNSWICK MO 101 LEBANON 2W MO 101 BRIDGEPORT NE 101 GOTHENBURG NE 101 NORTH LOUP NE 101 BUCYRUS OH 101 WAUSEON WTP OH 101 PAULS VALLEY 4 WSW OK 101 WEBBERS FALLS 5 WSW OK 101 CLARKSVILLE WWTP TN 101 MOAB UT 101 BRINKLEY AR 100 ANDERSON SEWAGE PLT IN 100 MADISON SEWAGE PLT IN 100 ROCKVILLE IN 100 WASHINGTON 1 W IN 100 PIPESTONE MN 100 BATESVILLE 2 SW MS 100 DEFIANCE OH 100 NORWALK WWTP OH 100 GREENVILLE KGVL RADIO TX 100 DESERET UT 100 LEVAN UT 100 LOGAN UTAH ST UNIV UT 100
That is truly impressive, especially given that UHI was negligible, and nobody was adjusting readings higher.