CHAMPAIGN, IL LOCAL CLIMATOLOGICAL DATA MAY 1997 Illinois Water Survey SUMMARY =============================================================================== TEMP PRECIP ----SNOW-- WEATHER WIND SKY DEGREE DAYS DATE MX MN INCH T INCH T DEP TYPES D S COV H C CORN ------------------------------------------------------------------------------ 05/01/97 64 41 0.00T 0.0* 0 L W 8.7 CLDY 12 0 7 05/02/97 59 49 0.91 0.0 0 TRW+,R,RW-,F SE 7.2 CLDY 11 0 5 05/03/97 56 44 1.15* 0.0 0 TRW+,R,RW- NW 7.9 CLDY 15 0 3 05/04/97 65 41 0.00 0.0 0 W 7.1 CLR 12 0 8 05/05/97 71 46 0.07 0.0 0 TRW,RW- SW 12.5 PC 6 0 11 05/06/97 69 47 0.00 0.0 0 NW 5.0 CLR 7 0 10 05/07/97 70 44 0.00 0.0 0 SE 6.1 CLDY 8 0 10 05/08/97 73 51 0.24 0.0 0 R,RW W 9.2 PC 3 0 12 05/09/97 61 45 0.00 0.0 0 NW 10.0 PC 12 0 6 05/10/97 68 40 0.00 0.0 0 N 4.7 CLR 11 0 9 05/11/97 77 44 0.06 0.0 0 R- SW 11.0 PC 4 0 14 05/12/97 64 46 0.00 0.0 0 W 9.8 CLR 10 0 7 05/13/97 60 44 0.13 0.0 0 R,R- W 5.9 CLDY 13 0 5 05/14/97 67 44 0.08 0.0 0 R- W 9.7 PC 9 0 9 05/15/97 57 38 0.00 0.0 0 NW 8.7 PC 17* 0 4 05/16/97 70 35* 0.01 0.0 0 R- WSW 9.0 CLR 12 0 10 05/17/97 84 52 0.07 0.0 0 RW,R,R- SW 6.1 PC 0 3 18 05/18/97 85* 51 0.08 0.0 0 TRW+,R,R- SW 9.4 CLDY 0 3 18 05/19/97 73 49 0.39 0.0 0 TRW+,R,R- NW 7.4 CLDY 4 0 12 05/20/97 66 44 0.00 0.0 0 NNW 5.1 CLR 10 0 8 05/21/97 63 43 0.00 0.0 0 NE 5.5 CLR 12 0 7 05/22/97 69 37 0.00 0.0 0 NE 3.0 CLR 12 0 10 05/23/97 76 44 0.00 0.0 0 SE 4.1 PC 5 0 13 05/24/97 83 54 0.15 0.0 0 TRW,RW,R- SE 5.5 CLDY 0 4* 19* 05/25/97 71 57 0.21 0.0 0 RW+,R,R-,F NE 6.7 CLDY 1 0 14 05/26/97 57 49 0.56 0.0 0 R,R-,RW NE 7.1 CLDY 12 0 4 05/27/97 69 48 0.07 0.0 0 R- NE 6.2 CLDY 6 0 10 05/28/97 63 53 0.13 0.0 0 TRW-,R-,L-,F SE 4.4 CLDY 7 0 8 05/29/97 63 52 0.00T 0.0 0 R- W 6.3 CLDY 7 0 8 05/30/97 61 52 0.38 0.0 0 R,R-,F SW 2.8 CLDY 8 0 7 05/31/97 69 56 0.00 0.0 0 F NE 7.0 CLDY 2 0 13 ------------------------------------------------------------------------------ TOT/AVE 67.8 46.5 4.69 0.0 W 7.1 248 10 299 DEP -5.9 -5.2 +0.72 +0.0 S +0.2 +98 -61 -124 =========================NUMBER OF DAYS AND DEPARTURE======================== MAX TEMP MIN TEMP ----------PRECIPITATION------------- >=90 <=32 <=32 <=0 >=T >=.01 >=.10 >=.50 >=1.00 TOTAL 0 0 0 0 19 17 10 3 1 DEP -1 +0 +0 +0 - +7 +3 +0 +0 SNOW SKY COVER ----------WEATHER TYPES---------- >=1.0 CLR PC CLDY F T IP A R L S Z D H BS TOTAL 0 8 8 15 5 7 0 0 18 2 0 0 0 0 0 DEP +0 -2 -3 +5 +2 +1 - -1 +5 -1 +0 +0 - - - SEASONAL SEASONAL SEASONAL JAN- MAY HEAT DD COOL DD CORN GDD PRECITITATION TOTAL 6109 10 572 14.72 DEP +186 -72 -147 -0.29 WEATHER TYPES:F=Fog;T=Thunder;IP=Ice Pellets;A=Hail;R=Rain;S=Snow;Z=Freezing Precip;D=Dust;H=Haze;BS=Blowing Snow; RW=Rain Showers;SW=Snow Showers; L=Drizzle;T=Trace. Intensities: + heavy; - light; absence of symbol indicates moderate. Degree days:Heat and Cool base 65F,Corn Growing base 50F. Averages based on 1961-1990 data.Snow depth at 7 AM LST. Sky 7 AM - 7 PM LST. Other data mid-mid. Heat DD season Jul-Jun; Cool and Corn season Jan-Dec. REMARKS: Ave mo. max temp ties the 8th coldest ave mo max for May (rec 65.0 in 1935). 9th coldest ave mo. min (rec 43.1/1891) and 4th coldest ave mo mean (rec 55.4/1907, 1917, 1924). Only 5 days had average temps above the daily average. Peak gust 38.7 mph, from the west on the 14th. Even though air temp did not fall below 32 F at weather shelter (aprox 6 feet above ground), there was scattered frost on the 16th. Spring Stats (M, A, M): ave max temp 59.7F (-1.9F), ave min temp 38.1F (-3.3F, 9th coldest ave min temp for spring, rec 35.6/1891), and ave mean temp 48.9F (-2.6F). Total precip 8.71 inches (- 2.52 inches) and total snowfall a trace.