Historical Climate Data

Precipitation Summary

Station: 116011 NASHVILLE 4 NE, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Prec. (in) 2.18 2.34 3.48 3.86 4.10 3.68 3.66 2.73 3.22 3.00 3.78 2.99 39.02

Precipitation Extremes

Period of Record: 1895-2006


Month
High (in)
Year
Low (in)
Year 		1-Day
Max (in)
Date
Jan 10.32 1916 0.10 1986 3.96 01-31-1982
Feb 6.26 1950 0.12 1917 3.49 02-02-1986
Mar 13.05 1898 0.00 1901 4.00 03-25-1904
Apr 10.19 1957 0.60 1977 4.27 04-29-1996
May 16.83 1995 0.35 1914 4.70 05-08-1961
Jun 11.21 1945 0.19 1933 4.40 06-30-1945
Jul 11.58 1969 0.32 1921 3.38 07-20-1896
Aug 21.18 1946 0.07 1969 7.80 08-16-1946
Sep 8.33 1965 0.20 1985 3.75 09-16-1905
Oct 14.04 1919 0.22 1964 5.03 10-26-1919
Nov 12.14 1985 0.23 1949 3.42 11-14-1993
Dec 10.17 1967 0.30 1955 3.81 12-21-1967
             
Annual 57.58 1898 23.75 1953 7.80 08-16-1946
Winter 19.70 1950 3.23 1981 3.96 01-31-1982
Spring 22.79 1927 3.61 1901 4.70 05-08-1961
Summer 27.41 1946 3.98 1953 7.80 08-16-1946
Fall 20.79 1919 2.22 1999 5.03 10-26-1919

Precipitation Threshold Climatology

Derived from 1971-2000 Averages:

*Annual/seasonal totals may differ from the sum of the monthly totals due to rounding.


Month 		# Days
Total ≥ 0.01" 		# Days
Total ≥ 0.10" 		# Days
Total ≥ 0.50" 		# Days
Total ≥ 1.00"
Jan 8.0 4.7 1.3 0.4
Feb 7.6 4.7 1.3 0.4
Mar 10.3 6.9 2.2 0.9
Apr 10.3 6.9 2.4 1.0
May 9.7 7.0 2.8 1.0
Jun 8.8 6.3 2.6 0.9
Jul 8.0 5.7 2.5 1.0
Aug 7.3 5.0 1.8 0.7
Sep 6.6 4.5 2.1 1.1
Oct 7.4 5.3 2.1 0.7
Nov 9.0 6.4 2.6 0.9
Dec 8.3 5.5 2.0 0.7
         
Annual 101.3 68.8 25.7 9.8
Winter 23.8 14.9 4.6 1.6
Spring 30.3 20.8 7.4 2.9
Summer 24.2 17.0 6.8 2.6
Fall 23.0 16.1 6.8 2.7

Temperature Summary

Station 116011 NASHVILLE 4 NE, IL

1971-2000 NCDC Normals

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High °F 37.8 44.1 55.6 66.6 76.1 84.9 88.3 86.6 79.9 69.0 54.3 42.1 65.4
Low °F 21.8 26.4 35.4 45.1 55.0 63.8 67.7 65.3 57.9 47.2 36.6 26.5 45.7
Mean °F 29.8 35.3 45.5 55.9 65.6 74.4 78.0 76.0 68.9 58.1 45.5 34.3 55.6
HDD 1091 834 605 289 112 5 0 4 40 251 587 951 4769
CDD 0 0 0 16 129 286 403 343 157 36 0 0 1370

HDD - heating degree days (base 65F); CDD - cooling degree days (base 65F)

Temperature Extremes

Period of Record: 1895-2006


Month 		High
Mean °F
Year 		Low
Mean °F
Year 		1-Day
Max °F
Date 		1-Day
Min °F
Date
Jan 42.2 2006 15.4 1977 74 01-20-1906 -18 01-17-1977
Feb 43.9 1976 21.4 1978 76 02-13-1962 -21 02-12-1899
Mar 51.6 1973 35.2 1906 84 03-31-1981 2 03-07-1899
Apr 62.8 1981 49.5 1904 90 04-29-1987 21 04-17-1904
May 73.0 1962 60.1 1990 93 05-21-1987 28 05-01-1903
Jun 78.1 1901 66.8 1903 102 06-29-1901 42 06-12-1903
Jul 84.3 1901 73.3 1904 109 07-23-1901 46 07-27-1962
Aug 82.3 1980 70.9 1967 106 08-02-1901 42 08-13-1964
Sep 75.4 1897 63.5 1974 104 09-05-1899 25 09-30-1899
Oct 66.0 1963 50.4 1895 94 10-14-1899 21 10-30-1895
Nov 52.2 2001 38.2 1976 82 11-02-1987 6 11-08-1991
Dec 43.0 1982 20.7 1989 73 12-02-1982 -21 12-22-1989
                 
Annual 59.0 1961 53.0 1904 109 07-23-1901 -21 02-12-1999
Winter 38.4 1992 25.2 1978 76 02-13-1962 -21 12-22-1989
Spring 61.0 1977 51.6 1984 93 05-21-1987 2 03-07-1999
Summer 80.4 1980 71.7 1904 109 07-23-1901 42 06-12-1903
Fall 61.9 1897 52.5 1976 104 09-05-1999 6 11-08-1991

Temperature Threshold Climatology

Derived from 1971-2000 Averages:

*Annual/seasonal values may differ from the sum of the monthly values due to rounding.


Month 		# Days
High ≥ 90°F 		# Days
High ≤ 32°F 		# Days
Low ≤ 32°F 		# Days
Low ≤ 0°F
Jan 0.0 10.1 25.7 1.8
Feb 0.0 5.5 19.4 0.6
Mar 0.0 0.9 12.5 0.0
Apr 0.1 0.0 2.9 0.0
May 0.6 0.0 0.1 0.0
Jun 6.8 0.0 0.0 0.0
Jul 13.0 0.0 0.0 0.0
Aug 9.1 0.0 0.0 0.0
Sep 3.3 0.0 0.0 0.0
Oct 0.1 0.0 2.0 0.0
Nov 0.0 0.5 11.2 0.0
Dec 0.0 5.4 21.7 1.0
         
Annual 32.9 22.3 95.5 3.3
Winter 0.0 21.0 66.9 3.3
Spring 0.6 0.9 15.5 0.0
Summer 28.9 0.0 0.0 0.0
Fall 3.4 0.5 13.2 0.0

Snowfall Summary

Station: 116011 NASHVILLE 4 NE, IL

1971-2000 Averages

Element Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Snow (in) 5.7 4.1 1.6 0.6 0.0 0.0 0.0 0.0 0.0 0.1 0.9 3.7 16.7

Snowfall Extremes

Period of Record: 1895-2006

Month High (in) Year 1-Day Max (in) Date
Jan 23.0 1977 14.0 01-31-1982
Feb 21.0 1982 8.2 02-09-1982
Mar 18.5 1960 8.8 03-01-1969
Apr 13.4 1971 12.2 04-06-1971
May 0.0 - - -
Jun 0.0 - - -
Jul 0.0 - - -
Aug 0.0 - - -
Sep 0.0 - - -
Oct 2.0 1993 1.8 10-31-1993
Nov 9.0 1980 8.2 11-27-1980
Dec 17.1 1969 8.9 12-20-1973
Season (Jul-Jun) 42.8 1981-1982 14.0 01-31-1982

Snowfall Threshold Climatology

Derived from 1971-2000 Averages

*Annual values may differ from the sum of the monthly values due to rounding.


Month 		# Days
Total ≥ 0.1" 		# Days
Total ≥ 1.0" 		# Days
Total ≥ 2.0" 		# Days
Total ≥ 5.0"
Jan 2.7 1.1 0.7 0.1
Feb 2.7 1.1 0.7 0.1
Mar 1.1 0.5 0.3 0.1
Apr 0.2 0.2 0.1 0.0
May 0.0 0.0 0.0 0.0
Jun 0.0 0.0 0.0 0.0
Jul 0.0 0.0 0.0 0.0
Aug 0.0 0.0 0.0 0.0
Sep 0.0 0.0 0.0 0.0
Oct 0.1 0.0 0.0 0.0
Nov 0.3 0.2 0.2 0.1
Dec 2.0 1.2 0.7 0.2
Annual 9.7 5.0 2.8 0.7

Growing Season Summary

Station: 116011 NASHVILLE 4 NE, IL

Growing Degree Day Averages

Derived from 1971-2000 Data

Base Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
40 33 78 237 485 797 1036 1184 1121 874 568 225 63 6708
45 12 38 144 347 642 886 1029 966 724 420 136 29 5379
50 4 14 77 225 488 736 874 811 575 285 72 12 4179
55 1 4 35 128 340 586 719 656 428 171 31 4 3110
60 0 0 13 63 210 436 565 501 291 86 10 0 2180
50** 17 44 138 286 507 708 821 771 574 343 121 31 4367

**Modified Growing Degree Days: Base 50, Ceiling 86.

Growing Season Summary

Derived from 1971-2000 Averages

Date of Last Spring Occurrence Date of First Fall Occurrence
Temp °F Median Early 90% 10% Late Median Early 90% 10% Late
32 4/07 3/22 3/26 4/21 5/07 10/24 10/02 10/08 11/11 11/19
30 4/06 3/22 3/23 4/15 4/19 10/31 10/08 10/13 11/17 11/28
28 4/02 3/14 3/17 4/11 4/18 11/09 10/19 10/22 11/24 12/04
24 3/21 2/21 3/11 4/09 4/12 11/18 11/01 11/04 12/05 12/21
20 3/09 1/30 2/10 3/23 3/25 11/29 11/02 11/09 12/17 12/22
16 2/15 1/11 1/31 3/13 3/25 12/12 11/07 11/17 12/22 12/25

Length of Growing Season (Days)

Derived from 1971-2000 Averages

Temp °F Median Shortest 10% 90% Longest
32 201 165 176 223 237
30 210 176 189 231 247
28 223 191 201 241 261
24 236 210 213 267 283
20 268 228 239 291 312
16 293 254 265 316 344

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Copyright 2007 Illinois State Water Survey
Jim Angel, State Climatologist, jimangel@illinois.edu
Last Modified: September 11, 2007