FNUS73 KFSD 061152 FWSFSD Spot Forecast for Hannibal - West...OBrien County Conservation National Weather Service Sioux Falls SD 652 AM CDT Wed May 6 2026 If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... West-northwest winds will dominate the late morning and afternoon with occasional gusts to around 20 mph as the relative humidity drops to around 30 percent. Deep mixing and breezy winds will lead to excellent smoke dispersal. Looking ahead to Thursday, winds will be lighter and favor more of a westerly direction by midday. Deep mixing will again result in excellent smoke dispersal from late morning onward. Humidity levels will be lower on Thursday, dropping as low as 18-20 percent by late afternoon. .REST OF TODAY... Max temperature.....Around 54. Min humidity........28 percent. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......MC MC MC MC MC MC MC MC Sky (%).........51 54 56 59 59 58 58 58 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 Temp............46 49 50 51 52 53 54 54 Dewpoint........24 24 23 23 22 22 23 23 RH..............42 37 34 33 31 29 30 30 20 FT wind dir..WNW WNW NW NW NW WNW WNW WNW 20 FT wind spd..10 13 14 15 15 15 15 14 20 FT wind gust.15 17 18 20 20 20 20 20 Mix hgt (kft)...6.8 7.4 8.0 8.5 8.6 8.6 8.7 8.6 Transp wind dir.NW WNW WNW WNW WNW WNW WNW WNW Transp wind spd.17 21 21 20 20 20 20 20 Smoke Dispersal.EX EX EX EX EX EX EX EX .TONIGHT... Min temperature.....Around 33. Max humidity........67 percent. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky cover.......MC MC PC PC PC PC PC MC PC PC PC PC Sky (%).........58 58 49 40 32 39 46 54 47 40 34 34 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............54 52 49 44 42 40 39 36 35 35 34 35 Dewpoint........22 23 24 25 25 25 25 25 25 24 24 25 RH..............28 32 37 47 51 55 57 64 66 64 66 66 20 FT wind dir..WNW WNW WNW WNW WNW W W SW SSW SSW SSW SSW 20 FT wind spd..14 12 9 5 2 1 1 2 2 3 5 5 20 FT wind gust.18 18 10 7 5 3 3 3 5 6 7 8 Mix hgt (kft)...8.4 7.7 0.7 0.7 0.5 0.4 0.4 0.3 0.4 0.4 0.4 0.4 Transp wind dir.WNW WNW WNW NW WNW WNW WSW SSW SSW SSW SSW SSW Transp wind spd.18 17 12 9 8 7 6 7 8 10 12 12 Smoke Dispersal.EX EX PR PR PR PR PR PR PR PR PR PR .THURSDAY... Max temperature.....Around 66. Min humidity........19 percent. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......PC PC PC MCR MCR MCR MCR CLR CLR CLR CLR CLR Sky (%).........34 34 28 21 14 16 10 1 2 1 1 2 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............35 36 42 47 52 55 58 61 64 64 65 66 Dewpoint........25 26 29 31 32 30 28 26 25 24 23 23 RH..............66 67 60 53 46 38 32 26 23 22 20 19 20 FT wind dir..SSW SSW SSW SW SW WSW W W W WW WNW 20 FT wind spd..5 5 5 6 7 7 7 8 8 9 10 10 20 FT wind gust.7 8 8 9 10 12 12 13 14 16 16 16 Mix hgt (kft)...0.4 0.4 0.9 1.5 3.6 5.4 7.3 9.2 9.3 9.5 9.6 9.5 Transp wind dir.SSW SSW SSW WSW WSW W W W W W W W Transp wind spd.12 12 15 16 15 14 14 20 15 16 20 17 Smoke Dispersal.PR PR PR FR GD EX EX EX EX EX EX EX $$ Forecaster...JH Requested by...Mark Wilson Type of request...PRESCRIBED .TAG 2612865.0/FSD .DELDT 05/06/26 .FormatterVersion 2.0.0 .EMAIL mwilson@obriencounty.iowa.gov