


WFO Monthly/Daily Climate Data
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
225 CXUS53 KLOT 120800 CF6LOT PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: ROMEOVILLE WFO MONTH: MAY YEAR: 2025 LATITUDE: 41 36 N LONGITUDE: 88 5 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 70 53 62 6 3 0 0.44 0.0 0 12.4 22 260 M M 8 1 28 230 2 62 45 54 -2 11 0 0.01 0.0 0 8.0 15 260 M M 8 1 20 40 3 58 44 51 -6 14 0 0.00 0.0 0 13.3 20 20 M M 4 28 40 4 57 45 51 -6 14 0 0.04 0.0 0 14.8 24 20 M M 5 1 35 10 5 62 47 55 -2 10 0 T 0.0 0 8.8 16 40 M M 7 1 21 40 6 75 41 58 0 7 0 0.00 0.0 0 7.1 16 280 M M 1 1 23 300 7 77 48 63 5 2 0 0.00 0.0 0 10.2 21 20 M M 0 28 20 8 60 42 51 -7 14 0 0.00 0.0 0 18.8 29 30 M M 3 30 40 9 68 39 54 -5 11 0 0.00 0.0 0 7.6 12 10 M M 2 18 50 10 76 44 60 1 5 0 0.00 0.0 0 9.8 22 40 M M 2 28 50 11 75 43 59 -1 6 0 0.00 0.0 0 11.5 15 90 M M 0 23 60 ================================================================================ SM 740 491 97 0 0.49 0.0 122.3 M 40 ================================================================================ AV 67.3 44.6 11.1 FASTST M M 4 MAX(MPH) MISC ----> 29 30 35 10 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: ROMEOVILLE WFO MONTH: MAY YEAR: 2025 LATITUDE: 41 36 N LONGITUDE: 88 5 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 56.0 TOTAL FOR MONTH: 0.49 1 = FOG OR MIST DPTR FM NORMAL: -1.8 DPTR FM NORMAL: -1.25 2 = FOG REDUCING VISIBILITY HIGHEST: 77 ON 7 GRTST 24HR 0.44 ON 1- 1 TO 1/4 MILE OR LESS LOWEST: 39 ON 9 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: 3 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 1 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 0 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 97 CLEAR (SCALE 0-3) 5 DPTR FM NORMAL 6 PTCLDY (SCALE 4-7) 5 TOTAL FM JUL 1 5498 CLOUDY (SCALE 8-10) 1 DPTR FM NORMAL -453 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL -12 [PRESSURE DATA] TOTAL FM JAN 1 6 HIGHEST SLP M ON M DPTR FM NORMAL -16 LOWEST SLP M ON M [REMARKS]