Champaign, Il Local Climatological Data September 1998 Water Survey Research Center Illinois Water Survey Summary ============================================================================== Temp Precip Sno Snow Weather Ave Wind Sky Degree Days Date MX MN (In) (In Dep Types Dir Speed Cov H C Gr -------------------------------------------------------------------------------- 09/01/98 81 60 .00 0.0 0 W 2.4 PC 0 6 21 09/02/98 80 58 0.02 0.0 0 R-,L- W 3.2 CLR 0 4 19 09/03/98 89 58 .00 0.0 0 SW 4.6 CLR 0 9 22 09/04/98 87 62 .00 0.0 0 F NE 3.9 CLR 0 10 24 09/05/98 94 61 .00 0.0 0 S 4.1 CLR 0 13 24 09/06/98 96* 66 .00 0.0 0 SW 5.7 CLR 0 16* 26 09/07/98 86 57 .00 0.0 0 NE 4.0 PC 0 7 22 09/08/98 75 55 .00 0.0 0 N 4.6 CLR 0 0 15 09/09/98 76 53 .00 0.0 0 NE 2.7 CLR 0 0 15 09/10/98 81 49 .00 0.0 0 S 1.7 CLR 0 0 16 09/11/98 87 51 .00 0.0 0 SW 3.2 CLR 0 4 19 09/12/98 92 53 .00 0.0 0 W 2.7 CLR 0 8 20 09/13/98 92 58 .00 0.0 0 S 2.4 PC 0 10 22 09/14/98 87 69 T 0.0 0 R-,L- S 8.0 CLDY 0 13 28* 09/15/98 81 68 T 0.0 0 R-,L- SW 6.2 CLDY 0 10 25 09/16/98 86 67 .00 0.0 0 NE 2.0 CLDY 0 12 27 09/17/98 81 66 T 0.0 0 R- NE 2.0 CLDY 0 9 24 09/18/98 87 65 .00 0.0 0 E 1.9 CLDY 0 11 26 09/19/98 90 62 .00 0.0 0 SW 2.8 PC 0 11 24 09/20/98 88 62 1.33* 0.0 0 TRW+,TRW,RW,R SE 2.7 CLDY 0 10 24 09/21/98 82 62 0.01 0.0 0 R-,L-,F NE 4.0 PC 0 7 22 09/22/98 77 52 .00 0.0 0 N 4.8 PC 0 0 15 09/23/98 71 48* .00 0.0 0 NE 2.7 CLR 5* 0 11 09/24/98 72 48* 0.33 0.0 0 R,R-,L-,F SE 3.3 CLDY 5* 0 11 09/25/98 85 61 T 0.0 0 R-,L-,F SSW 4.5 CLDY 0 8 23 09/26/98 90 66 .00 0.0 0 SW 9.1 CLR 0 13 26 09/27/98 91 65 T 0.0 0 R- WSW 6.7 PC 0 13 26 09/28/98 82 60 .00 0.0 0 F ENE 1.9 PC 0 6 21 09/29/98 85 56 0.01 0.0 0 RW- SE 3.3 PC 0 6 21 09/30/98 79 57 0.49 0.0 0 TRW+,F N 4.4 CLDY 0 3 18 -------------------------------------------------------------------------------- Tot/Ave 84.3 59.2 2.19 0.0 NE 3.9 10 219 637 Dep +6.6 +4.0 -1.17 +0.0 SW -1.2 -71 +102 +137 ==========================Number of days and Departure======================== Max Temp Min Temp ---------Precipitation---------- >=90 <=32 <=32 <=0 >=T >=.01 >=.10 >=.50 >=1.00 Total 7 0 0 0 11 6 3 1 1 Dep +5 +0 +0 +0 - -3 -2 -1 +0 Snow Sky Cover Jan- Sep >=1.0 CLR PC CLDY precipitation Total 0 12 9 9 39.85 Dep +0 +1 +0 -1 +8.91 --------Weather Types--------- Seas.Heat Seas.Cool Seas. Grow F T IP A R L S Z D D DD D D Total 6 1 0 0 11 6 0 0 10 1206 3651 Dep +1 -2 - +0 +1 +3 +0 +0 -80 +250 +387 Weather Types: F=Fog; T=Thunder; IP= Ice Pellets; A=Hail; R=Rain; S=Snow; Z=Freezing Precip; 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 with a cutoff at 86F. Averages based on 1961-1990 data. Snow depth at 7am LST. Sky Cover 7AM-7PM Other data mid-mid. Heat DD Season Jul-Jun. Cool and Corn Growing DD Season Jan-Dec. Remarks: Warmer than average month. 5th highest average monthly maximum temp (record:86.9F/1897), 7th highest ave monthly minimum temp (record 62.3F/1925) 3rd highest average monthly mean temp (record:72.2F/1925,1933). Tied with several other years for the 6th highest total number of days with temps 90F or greater. The last time there were 7 seven such days was in 1983. The highest total number of days with temps of 90F or greater for Sep was 15 in 1897. 8th highest monthly total cooling degree days (rec: 254/1931).