Wind Roses

  • All:  Includes VFR, IFR and LIFR conditions.
  • VFR:  VFR stands for visual flight rules. VFR is used by pilots when the visibility is greater than 5 miles and the ceiling (height at which clouds cover 5/8s of the sky or better) is greater than 3000 feet AGL (above ground level).
  • IFR:  IFR stands for instrument flight rules. IFR is used by pilots when the visibility is 1 to less than 3 miles and the ceiling (height at which clouds cover 5/8s of the sky or better) is greater or equal to  500 to 1000 feet AGL (above ground level).
  • LIFR:  LIFR stands for limited instrument flight rules. LIFR is used by pilots when the visibility is less than 1 mile and the ceiling (height at which clouds cover 5/8s of the sky or better) is less than 500 feet AGL (above ground level).
  • The values of the rings on the graphs are frequency in percent; for example, a bar with a length of 30 means the wind is from that direction 30 percent of the time.
Rapid City, SD All VFR IFR LIFR
Annual RAPannALL RAPannVFR RAPannIFR RAPannLIFR
January RAPjanALL RAPjanVFR RAPjanIFR RAPjanLIFR
February RAPfebALL RAPfebVFR RAPfebIFR RAPfebLIFR
March RAPmarALL RAPmarVFR RAPmarIFR RAPmarLIFR
April RAPaprALL RAPaprVFR RAPaprIFR RAPaprLIFR
May RAPmayALL RAPmayVFR RAPmayIFR RAPmayLIFR
June RAPjunALL RAPjunVFR RAPjunIFR RAPjunLIFR
July RAPjulALL RAPjulVFR RAPjulIFR RAPjulLIFR
August RAPaugALL RAPaugVFR RAPaugIFR RAPaugLIFR
September RAPsepALL RAPsepVFR RAPsepIFR RAPsepLIFR
October RAPoctALL RAPoctVFR RAPoctIFR RAPoctLIFR
November RAPnovALL RAPnovVFR RAPnovIFR RAPnovLIFR
December RAPdecALL RAPdecVFR RAPdecIFR RAPdecLIFR
Gillette, Wy All VFR IFR LIFR
Annual GCCannALL GCCannVFR GCCannIFR GCCannLIFR
January GCCjanALL GCCjanVFR GCCjanIFR GCCjanLIFR
February GCCfebALL GCCfebVFR GCCfebIFR GCCfebLIFR
March GCCmarALL GCCmarVFR GCCmarIFR GCCmarLIFR
April GCCaprALL GCCaprVFR GCCaprIFR GCCaprLIFR
May GCCmayALL GCCmayVFR GCCmayIFR GCCmayLIFR
June GCCjunALL GCCjunVFR GCCjunIFR GCCjunLIFR
July GCCjulALL GCCjulVFR GCCjulIFR GCCjulLIFR
August GCCaugALL GCCaugVFR GCCaugIFR GCCaugLIFR
September GCCsepALL GCCsepVFR GCCsepIFR GCCsepLIFR
October GCCoctALL GCCoctVFR GCCoctIFR GCCoctLIFR
November GCCnovALL GCCnovVFR GCCnovIFR GCCnovLIFR
December GCCdecALL GCCdecVFR GCCdecIFR GCCdecLIFR

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