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Printed from https://weathertotals.com/rain/storms/2026-09-20-8 on October 11, 2026.

Rain totals for September 20 to 21, 2026

Rainfall for September 20 to 21, 2026 peaked at 2.86 inches at 1 NNW Piedmont, South Dakota, drawn from 210 reports in National Weather Service Local Storm Reports across 3 states. No further reports have come in.

Reports have stopped

as of

Top rain total by state

Top rain total by state: September 20 to 21, 2026
StateTopPlaceCountyReported byTime
South Dakota2.86 inches1 NNW PiedmontMeadeCo-Op Observer
Montana1.75 inches7 E AlbionCarterPublic
Wyoming1.70 inches3 E NewcastleWestonCoCoRaHS
1 NNW Piedmont, SD: 2.86″1 NNW Piedmont, SD 2.86″1 NE Hisega, SD: 2.61″Tilford, SD: 2.58″2 E Sturgis, SD: 2.51″4 NNW Tilford, SD: 2.22″3 ESE Cheyenne Crossing, SD: 2.04″Hill City, SD: 1.99″14 NNW Edgemont, SD: 1.97″1 ESE Pactola Resv, SD: 1.87″2 SSW Custer, SD: 1.84″8 WNW Fairburn, SD: 1.83″Hot Springs, SD: 1.81″13 W Oglala, SD: 1.76″7 E Albion, MT: 1.75″Hayward, SD: 1.71″3 E Newcastle, WY: 1.70″11 SSW Oelrichs, SD: 1.61″Pringle, SD: 1.53″11 NE Morrisey, WY: 1.49″3 NNE Harrington, SD: 1.47″Angostura Res, SD: 1.47″9 NNE Edgemont, SD: 1.42″8 SSE Deerfield, SD: 1.41″5 E Martin, SD: 1.33″9 SW Angostura Res, SD: 1.31″Parmlee, SD: 1.31″2 ENE Sheridan Lake, SD: 1.31″13 SSW Oglala, SD: 1.30″1 S Devils Tower, WY: 1.27″Jewel Cave, SD: 1.25″7 N Wood, SD: 1.24″Edgemont, SD: 1.24″4 WSW Swett, SD: 1.22″2 SSW Oral, SD: 1.21″8 NW Vetal, SD: 1.20″7 E Sturgis, SD: 1.19″3 SSW Argyle, SD: 1.18″11 ESE Oelrichs, SD: 1.18″7 N Kirley, SD: 1.17″5 ENE Custer, SD: 1.17″1 W Wind Cave Visitors, SD: 1.15″4 S Hill City, SD: 1.15″2 W Deerfield Res, SD: 1.14″10 W Jewel Cave, SD: 1.10″9 N Cedar Butte, SD: 1.09″7 WSW Fairburn, SD: 1.06″6 NNW Dwtn Spearfish, SD: 1.05″Hermosa, SD: 1.03″10 NNW Ellsworth AFB, SD: 1.02″4 WNW Dwtn Rapid City, SD: 1.01″5 ESE Norris, SD: 1.00″6 N Hamill, SD: 0.99″5 NE Porcupine, SD: 0.96″Nemo, SD: 0.94″4 SE Upton, WY: 0.94″5 SSW Brownsville, SD: 0.93″12 NNW White River, SD: 0.92″4 WNW Cedar Butte, SD: 0.89″9 SE Kirley, SD: 0.88″7 SW Rapid City Arpt, SD: 0.88″7 W Ardmore, SD: 0.87″8 WSW Hereford, SD: 0.85″2 SSE Ideal, SD: 0.84″Martin, SD: 0.83″1 NNE Faith, SD: 0.83″8 NNW Newcastle, WY: 0.82″9 SSE Sorum, SD: 0.81″19 SW Upton, WY: 0.81″1 S White River, SD: 0.79″1 WNW Caputa, SD: 0.78″6 WSW Provo, SD: 0.78″9 ENE Wewela, SD: 0.77″1 NNW Nisland, SD: 0.77″7 SSW Folsom, SD: 0.76″9 N Wewela, SD: 0.75″9 SE Meadow, SD: 0.74″3 WNW Kadoka, SD: 0.74″2 ESE Dwtn Spearfish, SD: 0.73″27 WNW Castle Rock, SD: 0.73″2 WNW Oelrichs, SD: 0.73″14 WNW Lodgepole, SD: 0.72″8 ESE Prairie City, SD: 0.71″7 ESE Rosebud, SD: 0.71″2 N White River, SD: 0.71″20 WSW Usta, SD: 0.70″9 WSW Red Elm, SD: 0.70″1 ESE Camp Crook, SD: 0.69″1 N Buffalo, SD: 0.68″6 W New Underwood, SD: 0.68″3 SSW Swett, SD: 0.65″11 S Folsom, SD: 0.65″9 NNE Sturgis, SD: 0.64″Bison, SD: 0.64″5 NW Swett, SD: 0.61″11 WNW Belle Fourche, SD: 0.61″6 S Kadoka, SD: 0.60″1 SSW Newell, SD: 0.59″Rapid City Arpt, SD: 0.59″4 NNE Colome, SD: 0.59″3 E Midland, SD: 0.58″1 N Wewela, SD: 0.57″6 NE Summerset, SD: 0.57″1 ESE Ladner, SD: 0.56″3 N Redig, SD: 0.53″6 W Rochford, SD: 0.52″11 NNE Weston, WY: 0.52″Lead, SD: 0.51″5 SW Brownsville, SD: 0.50″10 N Osage, WY: 0.50″MTSDWY
0.71″ 1.43″ 2.86″ Circle size scaleOne spotter report, sized by amount
Circles show spotter reports from this storm, sized by amount. County lines mark the states touched, and the largest values are labeled. 210 reports are plotted.

Largest 200 rain reports, sorted by amount

Largest 200 rain reports, sorted by amount: September 20 to 21, 2026, 210 reports
AmountPlaceCountyStateReported byTime
2.86 inches1 NNW PiedmontMeadeSDCo-Op Observer
2.72 inches1 NNW PiedmontMeadeSDNWS Employee
2.61 inches1 NE HisegaPenningtonSDCoCoRaHS
2.58 inchesTilfordMeadeSDCoCoRaHS
2.51 inches2 E SturgisMeadeSDMesonet
2.50 inchesPiedmontMeadeSDCoCoRaHS
2.22 inches4 NNW TilfordMeadeSDCoCoRaHS
2.04 inches3 ESE Cheyenne CrossingLawrenceSDCoCoRaHS
2.01 inches3 NE WhitewoodLawrenceSDTrained Spotter
1.99 inchesHill CityPenningtonSDCo-Op Observer
1.97 inches14 NNW EdgemontFall RiverSDMesonet
1.96 inches1 NNW HisegaPenningtonSDCoCoRaHS
1.90 inches14 NW EdgemontFall RiverSDCoCoRaHS
1.87 inches1 ESE Pactola ResvPenningtonSDCo-Op Observer
1.85 inches1 N HisegaPenningtonSDNWS Employee
1.84 inches2 SSW CusterCusterSDASOS
1.83 inches4 W CusterCusterSDMesonet
1.83 inches8 WNW FairburnCusterSDMesonet
1.82 inches5 NE HisegaPenningtonSDOther Federal
1.81 inchesHot SpringsFall RiverSDCoCoRaHS
1.80 inches4 E HisegaPenningtonSDCoCoRaHS
1.77 inchesHot SpringsFall RiverSDCo-Op Observer
1.76 inches13 W OglalaOglala LakotaSDMesonet
1.75 inches7 E AlbionCarterMTPublic
1.72 inches2 W Black HawkMeadeSDNWS Employee
1.71 inches1 W HisegaPenningtonSDOther Federal
1.71 inchesJohnson SidingPenningtonSDOther Federal
1.71 inchesHaywardPenningtonSDOther Federal
1.70 inches4 W Hot SpringsFall RiverSDOther Federal
1.70 inchesHot SpringsFall RiverSDCoCoRaHS
1.70 inches3 E NewcastleWestonWYCoCoRaHS
1.61 inches11 SSW OelrichsFall RiverSDMesonet
1.60 inches1 NW Black HawkMeadeSDTrained Spotter
1.60 inches1 WSW NewcastleWestonWYCoCoRaHS
1.56 inches2 WNW CusterCusterSDMesonet
1.53 inches9 WNW FairburnCusterSDOther Federal
1.53 inchesPringleCusterSDOther Federal
1.50 inches3 NE HisegaPenningtonSDOther Federal
1.50 inches4 W Hot SpringsFall RiverSDCoCoRaHS
1.49 inchesMount RushmorePenningtonSDCo-Op Observer
1.49 inches11 NE MorriseyWestonWYCoCoRaHS
1.48 inches2 WSW Sheridan LakePenningtonSDCoCoRaHS
1.47 inches3 NNE HarringtonBennettSDMesonet
1.47 inchesAngostura ResFall RiverSDOther Federal
1.42 inches9 NNE EdgemontFall RiverSDMesonet
1.41 inches8 SSE DeerfieldPenningtonSDMesonet
1.41 inches1 W Silver CityPenningtonSDOther Federal
1.40 inches2 NNW Hot SpringsFall RiverSDOther Federal
1.35 inches4 WSW Dwtn Rapid CityPenningtonSDOther Federal
1.34 inchesMount RushmorePenningtonSDMesonet
1.33 inches5 E MartinBennettSDOther Federal
1.31 inches9 SW Angostura ResFall RiverSDOther Federal
1.31 inchesParmleeToddSDMesonet
1.31 inches2 ENE Sheridan LakePenningtonSDMesonet
1.31 inches4 E HisegaPenningtonSDCoCoRaHS
1.30 inches5 SSW Hill CityPenningtonSDOther Federal
1.30 inches13 SSW OglalaOglala LakotaSDOther Federal
1.28 inches3 SSE HisegaPenningtonSDOther Federal
1.27 inches1 S Devils TowerCrookWYMesonet
1.25 inchesJewel CaveCusterSDMesonet
1.24 inches7 N WoodMelletteSDCoCoRaHS
1.24 inchesEdgemontFall RiverSDCoCoRaHS
1.23 inches1 NNW HisegaPenningtonSDCoCoRaHS
1.22 inches4 WSW SwettBennettSDCoCoRaHS
1.21 inches2 SSW OralFall RiverSDMesonet
1.20 inches8 NW VetalBennettSDCoCoRaHS
1.19 inches7 E SturgisMeadeSDMesonet
1.18 inches3 NNE Johnson SidingPenningtonSDCoCoRaHS
1.18 inches3 SSW ArgyleCusterSDCoCoRaHS
1.18 inches11 ESE OelrichsFall RiverSDMesonet
1.17 inches7 N KirleyHaakonSDCoCoRaHS
1.17 inches2 W Black HawkMeadeSDNWS Employee
1.17 inches5 ENE CusterCusterSDCoCoRaHS
1.17 inches5 WNW HermosaCusterSDTrained Spotter
1.15 inches1 W Wind Cave VisitorsCusterSDMesonet
1.15 inches2 S Pactola ResPenningtonSDOther Federal
1.15 inches4 S Hill CityPenningtonSDOther Federal
1.14 inches2 W Deerfield ResPenningtonSDOther Federal
1.14 inches3 N HaywardPenningtonSDOther Federal
1.14 inches2 S Pactola ResvPenningtonSDCoCoRaHS
1.13 inches4 SE NemoLawrenceSDOther Federal
1.13 inches7 WSW ParmeleeToddSDOther Federal
1.12 inches4 NNE Johnson SidingPenningtonSDCoCoRaHS
1.12 inchesOralFall RiverSDCo-Op Observer
1.12 inches1 ESE Mount RushmorePenningtonSDOther Federal
1.10 inches5 NW Dwtn Rapid CityPenningtonSDOther Federal
1.10 inches10 W Jewel CaveCusterSDMesonet
1.10 inches1 ESE Pactola ResvPenningtonSDCo-Op Observer
1.09 inches9 N Cedar ButteMelletteSDCoCoRaHS
1.08 inches4 NNW TilfordMeadeSDCoCoRaHS
1.06 inches2 NNW Mount RushmorePenningtonSDOther Federal
1.06 inches7 WSW FairburnCusterSDCoCoRaHS
1.05 inches2 SW HisegaPenningtonSDOther Federal
1.05 inches6 NNW Dwtn SpearfishLawrenceSDMesonet
1.05 inches1 NE HisegaPenningtonSDCoCoRaHS
1.04 inches1 ENE CusterCusterSDCoCoRaHS
1.03 inchesHermosaCusterSDCoCoRaHS
1.02 inches10 NNW Ellsworth AFBMeadeSDCoCoRaHS
1.02 inches1 NNE EdgemontFall RiverSDCo-Op Observer
1.01 inches7 WSW FairburnCusterSDCoCoRaHS
1.01 inches4 WNW Dwtn Rapid CityPenningtonSDCoCoRaHS
1.00 inches5 ESE NorrisMelletteSDTrained Spotter
1.00 inches4 W Rapid CityPenningtonSDMesonet
1.00 inches5 SE WhitewoodLawrenceSDOther Federal
1.00 inches2 ENE EdgemontFall RiverSDCoCoRaHS
0.99 inches6 N HamillTrippSDCoCoRaHS
0.98 inches10 W Jewel CaveCusterSDCoCoRaHS
0.97 inches3 WNW Mount RushmorePenningtonSDOther Federal
0.96 inches5 NE PorcupineOglala LakotaSDMesonet
0.96 inches6 W HermosaCusterSDCoCoRaHS
0.95 inches1 NNE EdgemontFall RiverSDOther Federal
0.95 inches1 SE Dwtn Rapid CityPenningtonSDMesonet
0.94 inchesNemoLawrenceSDMesonet
0.94 inches4 SE UptonWestonWYCoCoRaHS
0.94 inches3 NNE Johnson SidingPenningtonSDCoCoRaHS
0.93 inches5 SSW BrownsvilleLawrenceSDCoCoRaHS
0.92 inches12 NNW White RiverMelletteSDCoCoRaHS
0.91 inches4 W Dwtn Rapid CityPenningtonSDCoCoRaHS
0.90 inches1 NW Black HawkMeadeSDTrained Spotter
0.89 inches4 WNW Cedar ButteMelletteSDMesonet
0.89 inches4 NNE Johnson SidingPenningtonSDCoCoRaHS
0.88 inches9 SE KirleyHaakonSDCoCoRaHS
0.88 inches7 SW Rapid City ArptPenningtonSDCoCoRaHS
0.87 inches2 SSW NorrisMelletteSDCoCoRaHS
0.87 inches7 W ArdmoreFall RiverSDMesonet
0.85 inches2 S Pactola ResvPenningtonSDCoCoRaHS
0.85 inches8 WSW HerefordMeadeSDCoCoRaHS
0.84 inches2 SSE IdealTrippSDCoCoRaHS
0.83 inchesMartinBennettSDPublic
0.83 inches3 NE SwettBennettSDCoCoRaHS
0.83 inches1 NNE FaithMeadeSDASOS
0.83 inches2 NE RockervillePenningtonSDOther Federal
0.83 inchesHermosaCusterSDCoCoRaHS
0.82 inches4 NNE SummersetMeadeSDCoCoRaHS
0.82 inches8 NNW NewcastleWestonWYCoCoRaHS
0.81 inches9 SSE SorumPerkinsSDCoCoRaHS
0.81 inches2 WSW HamillTrippSDCoCoRaHS
0.81 inches19 SW UptonWestonWYMesonet
0.81 inches1 NE Dwtn Rapid CityPenningtonSDCoCoRaHS
0.79 inches1 S White RiverMelletteSDMesonet
0.78 inches5 WNW HermosaCusterSDTrained Spotter
0.78 inches1 WNW CaputaPenningtonSDMesonet
0.78 inches3 SW Hill CityPenningtonSDOther Federal
0.78 inches1 E Dwtn Rapid CityPenningtonSDOfficial NWS Obs
0.78 inches6 WSW ProvoFall RiverSDCoCoRaHS
0.77 inches9 ENE WewelaTrippSDCoCoRaHS
0.77 inches1 NNW NislandButteSDMesonet
0.77 inches4 S Dwtn Rapid CityPenningtonSDNWS Employee
0.77 inches4 NNE SummersetMeadeSDCoCoRaHS
0.76 inches7 SSW FolsomCusterSDMesonet
0.76 inches4 SE Dwtn Rapid CityPenningtonSDCoCoRaHS
0.75 inches9 N WewelaTrippSDCoCoRaHS
0.74 inches9 SE MeadowPerkinsSDCoCoRaHS
0.74 inches3 WNW KadokaJacksonSDCoCoRaHS
0.73 inches2 ESE Dwtn SpearfishLawrenceSDMesonet
0.73 inches27 WNW Castle RockButteSDMesonet
0.73 inches2 WNW OelrichsFall RiverSDCoCoRaHS
0.73 inches4 WNW Rapid City ArptPenningtonSDCoCoRaHS
0.72 inches4 WNW Dwtn Rapid CityPenningtonSDCoCoRaHS
0.72 inches14 WNW LodgepolePerkinsSDMesonet
0.72 inchesTilfordMeadeSDCoCoRaHS
0.71 inches6 NNW Dwtn SpearfishLawrenceSDCoCoRaHS
0.71 inches8 ESE Prairie CityPerkinsSDCoCoRaHS
0.71 inches7 ESE RosebudToddSDMesonet
0.71 inches1 NNW Dwtn Rapid CityPenningtonSDOther Federal
0.71 inches2 N White RiverMelletteSDOther Federal
0.70 inches20 WSW UstaPerkinsSDCoCoRaHS
0.70 inches9 WSW Red ElmZiebachSDTrained Spotter
0.69 inches1 ESE Camp CrookHardingSDOther Federal
0.69 inches4 SSE Devils TowerCrookWYCoCoRaHS
0.69 inches3 SSW ArgyleCusterSDCoCoRaHS
0.68 inches2 WSW Sheridan LakePenningtonSDCoCoRaHS
0.68 inches2 W HamillTrippSDMesonet
0.68 inches1 N BuffaloHardingSDASOS
0.68 inches6 W New UnderwoodPenningtonSDCoCoRaHS
0.67 inchesDeerfield ResPenningtonSDOther Federal
0.65 inches3 NW Dwtn SpearfishLawrenceSDCoCoRaHS
0.65 inches3 SSW SwettBennettSDCoCoRaHS
0.65 inches11 S FolsomCusterSDOther Federal
0.65 inches2 SSE Dwtn Rapid CityPenningtonSDCoCoRaHS
0.64 inches9 NNE SturgisMeadeSDCoCoRaHS
0.64 inches8 S SorumPerkinsSDMesonet
0.64 inchesBisonPerkinsSDMesonet
0.64 inches1 SSW SturgisMeadeSDCoCoRaHS
0.63 inches5 ENE CusterCusterSDCoCoRaHS
0.62 inches1 N UptonWestonWYCoCoRaHS
0.61 inches5 NW SwettBennettSDCoCoRaHS
0.61 inches11 WNW Belle FourcheButteSDOther Federal
0.60 inches2 WNW OelrichsFall RiverSDCoCoRaHS
0.60 inches4 W Hot SpringsFall RiverSDCoCoRaHS
0.60 inches2 WNW Dwtn SpearfishLawrenceSDCoCoRaHS
0.60 inches6 S KadokaJacksonSDOther Federal
0.59 inches7 SW Rapid City ArptPenningtonSDCoCoRaHS
0.59 inches1 SSW NewellButteSDCoCoRaHS
0.59 inchesRapid City ArptPenningtonSDASOS
0.59 inches4 NNE ColomeTrippSDMesonet
0.58 inches3 E MidlandHaakonSDCoCoRaHS
0.57 inches1 N WewelaTrippSDOther Federal
0.57 inches6 NE SummersetMeadeSDCoCoRaHS
0.56 inches1 ESE LadnerHardingSDMesonet

This table shows the top 200 of 210 reports; all reports are in the CSV download below.

Download CSV

The National Weather Service files these reports in its Local Storm Reports. A storm collects any two reports that fell no more than 75 miles and 6 hours apart, and any report already linked to either one joins that storm too, even when the reports sit in different states. Storms that last more than 48 hours are divided at the hour where reports are fewest, and each part is checked again. A page needs 5 reports or a top of 2 inches, and at least 3 reports either way.

All states touched

National Weather Service offices file Local Storm Reports; the Iowa Environmental Mesonet of Iowa State University relays them to this page, where they appear as live spotter reports. Under 17 U.S.C. 105, no copyright attaches to the government-produced figures on this page, including reports, alerts, station observations, and normals, which were created by the National Weather Service and other NOAA offices. The notice that 17 U.S.C. 403 requires appears in this sentence. It does not imply endorsement by or affiliation with those agencies. See: Data sources and attribution.