


WFO Monthly/Daily Climate Data
Issued by NWS
Issued by NWS
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583 CXUS56 KTFX 141110 CF6HLN PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: HELENA MT MONTH: MAY YEAR: 2025 LATITUDE: 46 35 N LONGITUDE: 112 0 W TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND ================================================================================ 1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18 12Z AVG MX 2MIN DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR ================================================================================ 1 68 36 52 3 13 0 0.00 0.0 0 3.8 13 60 M M 1 21 10 2 81 37 59 9 6 0 0.00 0.0 0 4.5 20 50 M M 0 28 260 3 82 42 62 12 3 0 0.00 0.0 0 4.4 17 260 M M 0 22 260 4 70 42 56 6 9 0 0.71 0.0 0 12.9 25 350 M M 5 13 33 10 5 50 39 45 -5 20 0 0.39 0.0 0 8.4 20 360 M M 9 1 25 340 6 58 34 46 -5 19 0 0.00 0.0 0 6.2 18 110 M M 5 24 110 7 78 36 57 6 8 0 0.00 0.0 0 4.8 16 80 M M 0 22 80 8 77 46 62 10 3 0 0.00 0.0 0 8.0 25 280 M M 0 33 290 9 80 43 62 10 3 0 0.00 0.0 0 6.2 22 90 M M 0 28 80 10 88 50 69 17 0 4 0.00 0.0 0 6.1 40 200 M M 0 38 62 180 11 77 51 64 11 1 0 0.08 0.0 0 7.7 24 180 M M 2 3 34 180 12 69 46 58 5 7 0 0.23 0.0 0 10.0 28 270 M M 5 3 41 200 13 51 44 48 -5 17 0 0.24 0.0 0 6.0 13 180 M M 10 16 170 ================================================================================ SM 929 546 109 4 1.65 0.0 89.0 M 37 ================================================================================ AV 71.5 42.0 6.8 FASTST M M 3 MAX(MPH) MISC ----> 40 200 62 180 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: HELENA MT MONTH: MAY YEAR: 2025 LATITUDE: 46 35 N LONGITUDE: 112 0 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 56.7 TOTAL FOR MONTH: 1.65 1 = FOG OR MIST DPTR FM NORMAL: 5.5 DPTR FM NORMAL: 1.06 2 = FOG REDUCING VISIBILITY HIGHEST: 88 ON 10 GRTST 24HR 1.10 ON 4- 5 TO 1/4 MILE OR LESS LOWEST: 34 ON 6 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 0.0 INCH 5 = HAIL GRTST 24HR 0.0 6 = FREEZING RAIN OR DRIZZLE GRTST DEPTH: 0 7 = DUSTSTORM OR SANDSTORM: VSBY 1/2 MILE OR LESS 8 = SMOKE OR HAZE [NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW X = TORNADO MAX 32 OR BELOW: 0 0.01 INCH OR MORE: 5 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 4 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 1 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 109 CLEAR (SCALE 0-3) 8 DPTR FM NORMAL -72 PTCLDY (SCALE 4-7) 3 TOTAL FM JUL 1 6415 CLOUDY (SCALE 8-10) 2 DPTR FM NORMAL -772 [CDD (BASE 65) ] TOTAL THIS MO. 4 DPTR FM NORMAL 4 [PRESSURE DATA] TOTAL FM JAN 1 4 HIGHEST SLP M ON M DPTR FM NORMAL 4 LOWEST SLP 29.47 ON 12 [REMARKS]