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Idaho weather for September 18, 2026

The day's Local Storm Reports for Idaho on September 18, 2026 break down this way: 44 reports of rainfall, topping 1.22 inches at 1 NW Rexburg; 8 reports of hail, with the largest stone measuring 1.75 inches at 2 WNW Shelley.

Previous day: Sep 17

2 WNW Shelley (hail): 1.75″2 WNW Shelley (hail) 1.75″3 ENE Rose (hail): 1.75″1 SSW Blackfoot (hail): 1.75″2 S Moreland (hail): 1.25″Firth (hail): 1.25″3 E Rose (hail): 1.25″1 NW Rexburg (rain): 1.22″Thornton (rain): 1.18″Idaho Falls (hail): 1.00″Idaho Falls (hail): 1.00″4 SSE Cherry Creek (rain): 0.98″6 NW Atomic City (rain): 0.97″2 SSW Sugar City (rain): 0.97″3 NNW Spencer (rain): 0.88″3 SE Cherry Creek (rain): 0.87″4 ENE Shelley (rain): 0.86″2 ENE Chester (rain): 0.84″2 E Rigby (rain): 0.83″1 NW Idaho Falls (rain): 0.82″1 NW Camas (rain): 0.76″1 W Gray (rain): 0.76″2 NE Osgood (rain): 0.69″5 SSE Roberts (rain): 0.69″4 NNW Shelley (rain): 0.67″1 NW Ucon (rain): 0.66″1 S Michaud (rain): 0.66″3 NE Chesterfield (rain): 0.64″3 W Arbon Valley (rain): 0.63″1 NW Mccammon (rain): 0.62″2 W Iona (rain): 0.61″2 NW Idaho Falls (rain): 0.61″8 NNW Dickey (rain): 0.59″2 SW Lund (rain): 0.59″7 NNW Ketchum (rain): 0.59″14 NE Atomic City (rain): 0.58″17 W Aberdeen (rain): 0.56″4 S Spencer (rain): 0.53″3 SSW Ashton (rain): 0.53″11 SE Poplar (rain): 0.48″1 SW Gibson (rain): 0.48″16 W Osgood (rain): 0.48″4 ENE Spencer (rain): 0.47″2 SE Palisades (rain): 0.47″4 SW Holbrook (rain): 0.47″Bellevue (rain): 0.47″4 W Firth (rain): 0.43″1 WSW Lava Hot Springs (rain): 0.41″Challis (rain): 0.36″7 SSE Rockland (rain): 0.35″10 S Oakley (rain): 0.35″4 W Clayton (rain): 0.34″2 E Chubbuck (rain): 0.33″MTNVORUTWAWY
0.44″ 0.88″ 1.75″ Circle size scaleOne spotter report, sized by amount
Circles show spotter reports for Idaho on September 18, 2026, each sized by amount. County lines mark the area, and the largest values are labeled. 52 reports are plotted.

Rainfall reports for the day

Rainfall reports for the day: Idaho, September 18, 2026, 44 reports
AmountPlaceCountyReported byTime
1.22 inches1 NW RexburgMadisonASOS
1.18 inchesThorntonMadisonMesonet
0.98 inches4 SSE Cherry CreekOneidaMesonet
0.97 inches6 NW Atomic CityButteMesonet
0.97 inches2 SSW Sugar CityMadisonMesonet
0.88 inches3 NNW SpencerClarkMesonet
0.87 inches3 SE Cherry CreekOneidaMesonet
0.86 inches4 ENE ShelleyBonnevilleMesonet
0.84 inches2 ENE ChesterFremontMesonet
0.83 inches2 E RigbyJeffersonMesonet
0.82 inches1 NW Idaho FallsBonnevilleMesonet
0.76 inches1 NW CamasJeffersonMesonet
0.76 inches1 W GrayBonnevilleMesonet
0.69 inches2 NE OsgoodBonnevilleMesonet
0.69 inches5 SSE RobertsJeffersonMesonet
0.67 inches4 NNW ShelleyBonnevilleMesonet
0.66 inches1 NW UconBonnevilleMesonet
0.66 inches1 S MichaudPowerASOS
0.64 inches3 NE ChesterfieldCaribouMesonet
0.63 inches3 W Arbon ValleyPowerMesonet
0.62 inches1 NW MccammonBannockMesonet
0.61 inches2 W IonaBonnevilleMesonet
0.61 inches2 NW Idaho FallsBonnevilleASOS
0.59 inches8 NNW DickeyCusterMesonet
0.59 inches2 SW LundCaribouMesonet
0.59 inches7 NNW KetchumBlaineMesonet
0.58 inches14 NE Atomic CityBinghamMesonet
0.56 inches17 W AberdeenPowerMesonet
0.53 inches4 S SpencerClarkMesonet
0.53 inches3 SSW AshtonFremontMesonet
0.48 inches11 SE PoplarBonnevilleMesonet
0.48 inches1 SW GibsonBinghamMesonet
0.48 inches16 W OsgoodBonnevilleMesonet
0.47 inches4 ENE SpencerClarkMesonet
0.47 inches2 SE PalisadesBonnevilleMesonet
0.47 inches4 SW HolbrookOneidaMesonet
0.47 inchesBellevueBlaineCO-OP Observer
0.43 inches4 W FirthBinghamMesonet
0.41 inches1 WSW Lava Hot SpringsBannockMesonet
0.36 inchesChallisCusterMesonet
0.35 inches7 SSE RocklandPowerMesonet
0.35 inches10 S OakleyCassiaMesonet
0.34 inches4 W ClaytonCusterMesonet
0.33 inches2 E ChubbuckBannockMesonet

Hail reports for the day

Hail reports for the day: Idaho, September 18, 2026, 8 reports
AmountPlaceCountyReported byTime
1.75 inches2 WNW ShelleyBinghamPublic
1.75 inches3 ENE RoseBinghamPublic
1.75 inches1 SSW BlackfootBinghamPublic
1.25 inches2 S MorelandBinghamPublic
1.25 inchesEstimatedFirthBinghamPublic
1.25 inchesEstimated3 E RoseBinghamPublic
1.00 inchesIdaho FallsBonnevillePublic
1.00 inchesIdaho FallsBonnevillePublic

Storms this day belongs to

Aurora verdict for Idaho

No Kp reading for the night of September 18 has reached the record for Idaho yet.

Was there aurora last night in Idaho?

City climate figures for September 18, 2026

City climate figures for September 18, 2026, Idaho
CityHighLowRainSnow
Boise73°F57°F0.04 inches0.0 inches

A daily climate report from the National Weather Service carries the figures for each city's airport station, and they arrive the following morning.

A single Local Storm Report from a spotter, covering snow, rain or hail, earns a state a day page. Reports come from the National Weather Service, and each day runs on US Eastern time so a single storm day covers the whole country at once.

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. The daily climate report is issued by the local National Weather Service forecast office and delivered to this page by the Iowa Environmental Mesonet of Iowa State University. 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.