FNUS73 KFSD 151240 FWSFSD Spot Forecast for Cottonwood WPA RX...USFWS National Weather Service Sioux Falls SD 740 AM CDT Wed Apr 15 2026 If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Winds will be light and variable this morning, becoming east-northeasterly around 5-10 mph in the afternoon. Can't rule out a passing shower this afternoon, but chances are low, less than 20%. Otherwise it will be warm with highs around 70 and relative humidity values down to 35-40% in the afternoon. Winds turn light and variable again tonight, but increase heading into the day on Thursday. Thursday will be very warm, dry, and breezy leading to a high fire danger. Relative humidity values drop to as low as 25% in the afternoon with highs near 80 with southerly wind gusts up to 25 mph. Southerly winds will remain elevated into Thursday night. .REST OF TODAY... Max temperature.....Around 69. Min humidity........37 percent. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......PC PC PC MC MC PC PC PC PC PC Sky (%).........42 48 50 60 53 49 44 41 45 50 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).10 10 10 10 10 10 10 10 10 10 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 Temp............45 48 54 57 60 64 66 68 68 69 Dewpoint........42 44 45 44 44 44 43 42 42 42 RH..............89 86 71 62 55 48 43 39 39 37 20 FT wind dir..NNW N NNE NE NE NE ENE ENE E E 20 FT wind spd..3 3 5 6 6 6 6 6 6 7 20 FT wind gust. 7 8 10 10 10 12 12 12 12 Mix hgt (kft)...0.4 0.8 1.3 1.5 1.9 2.3 3.0 3.7 4.4 4.8 Transp wind dir.N N NNE NNE NE NE NE NE NE E Transp wind spd.7 8 7 7 7 7 9 8 8 9 Smoke Dispersal.PR PR PR PR PR FR FR FR GD GD .TONIGHT... Min temperature.....Around 46. Max humidity........93 percent. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky cover.......MC PC PC PC PC PC PC PC PC MCR MCR MCR Sky (%).........51 50 50 42 41 33 36 36 26 17 8 7 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).10 10 10 10 10 0 0 0 0 0 0 0 Chc of thdr (%).0 M M M M M M M M M M M Temp............68 66 63 60 57 56 54 52 50 49 48 48 Dewpoint........43 44 46 46 46 46 45 45 44 44 43 43 RH..............40 45 54 60 67 69 71 77 80 83 83 83 20 FT wind dir..E ENE E E E E ENE NNE NW WNW W SW 20 FT wind spd..7 7 6 6 6 6 6 6 6 6 6 6 20 FT wind gust.12 12 10 10 10 10 10 12 10 10 10 12 Mix hgt (kft)...4.1 1.9 0.5 0.4 0.4 0.4 0.3 0.3 0.3 0.3 0.3 0.3 Transp wind dir.ESE E ESE ESE SE SE SE SSE S S SSW SSW Transp wind spd.7 9 8 10 9 9 10 10 10 10 9 10 Smoke Dispersal.FR FR PR PR PR PR PR PR PR PR PR PR .THURSDAY... Max temperature.....Around 79. Min humidity........27 percent. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......MCR CLR MCR MCR CLR CLR CLR CLR CLR CLR CLR CLR Sky (%).........7 5 8 7 5 3 2 1 1 2 2 3 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).M M M M M M M M M M M M Temp............47 46 49 55 61 66 70 74 76 78 79 79 Dewpoint........43 44 44 45 47 45 44 43 43 42 42 42 RH..............86 93 83 69 60 47 39 33 31 28 27 27 20 FT wind dir..WSW SW SSW SSW S S S S S S S S 20 FT wind spd..6 6 8 9 10 13 14 16 17 17 17 16 20 FT wind gust.12 12 13 15 17 20 21 22 23 23 23 22 Mix hgt (kft)...0.3 0.3 0.4 0.7 1.3 2.4 3.5 4.5 4.8 5.1 5.4 4.0 Transp wind dir.S S S S S S S S SSW SSW SSW SSW Transp wind spd.10 10 13 14 17 23 26 28 29 29 28 25 Smoke Dispersal.PR PR PR PR FR GD EX EX EX EX EX EX $$ Forecaster...Samet Requested by...James Corbett Type of request...PRESCRIBED .TAG 2610402.0/FSD .DELDT 04/15/26 .FormatterVersion 2.0.0 .EMAIL james_corbett@fws.gov