Precipitation Summary
Station: 115935 MOUNT STERLING, IL
1971-2000 NCDC Normals
| Element | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Prec. (in) | 1.58 | 1.59 | 2.79 | 3.64 | 5.03 | 3.85 | 3.90 | 3.24 | 3.42 | 3.18 | 3.07 | 2.29 | 37.58 |
Precipitation Extremes
Period of Record: 1942-2006
| Month | High (in) | Year | Low (in) | Year | 1-Day Max (in) |
Date |
|---|---|---|---|---|---|---|
| Jan | 6.21 | 1965 | 0.00 | 1983 | 2.70 | 01-01-1965 |
| Feb | 4.52 | 1998 | 0.05 | 2006 | 1.85 | 02-27-1998 |
| Mar | 7.99 | 1973 | 0.26 | 2002 | 2.53 | 03-21-1962 |
| Apr | 9.90 | 1983 | 0.71 | 1971 | 3.75 | 04-21-1973 |
| May | 13.12 | 1991 | 0.70 | 2006 | 4.17 | 05-05-1991 |
| Jun | 11.48 | 1947 | 0.11 | 1963 | 5.52 | 06-08-1962 |
| Jul | 13.62 | 1981 | 0.29 | 1988 | 4.25 | 07-22-1951 |
| Aug | 7.80 | 1970 | 0.34 | 1953 | 4.62 | 08-26-2004 |
| Sep | 11.24 | 1945 | 0.08 | 1956 | 3.10 | 09-01-2003 |
| Oct | 9.23 | 1991 | 0.14 | 1964 | 5.33 | 10-04-1991 |
| Nov | 10.46 | 1985 | 0.29 | 1999 | 2.77 | 11-18-1985 |
| Dec | 7.22 | 1982 | 0.00 | 2000 | 2.83 | 12-21-1949 |
| Annual | 56.11 | 1973 | 15.79 | 1953 | 5.52 | 06-08-1962 |
| Winter | 11.33 | 1950 | 1.46 | 1956 | 2.83 | 12-21-1949 |
| Spring | 19.88 | 1991 | 3.48 | 1971 | 4.17 | 05-05-1991 |
| Summer | 23.10 | 1993 | 3.50 | 1983 | 5.52 | 06-08-1962 |
| Fall | 18.28 | 1985 | 2.18 | 1999 | 5.33 | 10-04-1991 |
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 | 5.3 | 4.0 | 1.1 | 0.3 |
| Feb | 4.6 | 3.6 | 1.2 | 0.3 |
| Mar | 6.8 | 5.4 | 2.3 | 0.9 |
| Apr | 8.6 | 6.7 | 2.9 | 0.8 |
| May | 9.2 | 7.4 | 3.3 | 1.6 |
| Jun | 7.8 | 6.1 | 2.7 | 1.1 |
| Jul | 7.2 | 5.9 | 2.6 | 1.2 |
| Aug | 6.8 | 5.3 | 2.4 | 1.0 |
| Sep | 6.1 | 5.0 | 2.5 | 1.0 |
| Oct | 6.5 | 5.2 | 2.2 | 0.9 |
| Nov | 7.3 | 5.7 | 2.5 | 0.7 |
| Dec | 5.8 | 4.3 | 1.8 | 0.6 |
| Annual | 82.5 | 65.1 | 27.7 | 10.6 |
| Winter | 15.7 | 11.9 | 4.2 | 1.2 |
| Spring | 24.9 | 19.7 | 8.6 | 3.3 |
| Summer | 21.8 | 17.3 | 7.6 | 3.3 |
| Fall | 20.0 | 15.9 | 7.2 | 2.7 |
Temperature Summary
There are insufficient temperature data to produce the temperature summary.
Snowfall Summary
Station: 115935 MOUNT STERLING, IL
1971-2000 Averages
| Element | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snow (in) | 7.0 | 4.5 | 1.5 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.2 | 4.5 | 19.2 |
Snowfall Extremes
Period of Record: 1942-2006
| Month | High (in) | Year | 1-Day Max (in) | Date |
|---|---|---|---|---|
| Jan | 19.0 | 1979 | 11.2 | 01-26-1967 |
| Feb | 17.0 | 1986 | 9.0 | 02-24-1965 |
| Mar | 19.2 | 1960 | 9.2 | 03-16-1960 |
| Apr | 4.0 | 1980 | 4.0 | 04-14-1980 |
| May | 0.0 | – | – | – |
| Jun | 0.0 | – | – | – |
| Jul | 0.0 | – | – | – |
| Aug | 0.0 | – | – | – |
| Sep | 0.0 | – | – | – |
| Oct | 0.0 | – | – | – |
| Nov | 9.8 | 1975 | 7.3 | 11-26-1975 |
| Dec | 13.5 | 1977 | 8.1 | 12-15-1987 |
| Season (Jul-Jun) | 44.0 | 1951-1952 | 11.2 | 01-26-1967 |
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 | 2.1 | 1.7 | 1.1 | 0.2 |
| Feb | 2.1 | 1.7 | 1.1 | 0.2 |
| Mar | 0.7 | 0.6 | 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 | 0.0 | 0.0 | 0.0 | 0.0 |
| Nov | 0.8 | 0.4 | 0.2 | 0.1 |
| Dec | 2.2 | 1.8 | 1.1 | 0.2 |
| Annual | 7.8 | 6.6 | 4.0 | 0.9 |
Growing Season Summary
There are insufficient temperature data to produce the growing season summary.
Copyright 2007 Illinois State Water Survey
Last Modified: September 11, 2007