Official 1981-2010 Climate Normals

City: LEBANON  
State: IL
ID: 114991
Latitude: 38.6003
Longitude: -89.8178
Elevation:  497.9 ft

Temperature-Related Pseudonormals

For stations with short records, linear combinations of normals from nearby sites were used
to compute so-called pseudonormals.

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
High:    39.4   44.4   55.4   67.0   76.1   85.0   88.4   87.5   80.5   69.2   55.9   42.1
Mean:    30.0   34.1   44.1   55.2   64.7   73.9   77.7   76.1   67.8   56.7   45.1   33.0
 Low:    20.5   23.7   32.7   43.4   53.2   62.8   67.0   64.7   55.1   44.2   34.2   23.9
 CDD:       0      0      3     19     92    274    394    346    133     26      1      0
 HDD:    1086    866    652    313    103      8      0      2     49    283    600    992

Number of Days
T090:     0.0    0.0    0.0    0.1    1.2    6.4   11.8    9.7    3.1    0.4    0.0    0.0
T100:     0.0    0.0    0.0    0.0    0.0    0.1    0.4    0.8    0.0    0.0    0.0    0.0
T000:     0.9    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.7
T032:    26.5   23.4   17.0    2.4    0.0    0.0    0.0    0.0    0.0    2.5   13.7   23.6
------------------------------------------------------------------------------------------
Annual Values

 High Temp:    66.0 F
 Mean Temp:    54.9 F
  Low Temp:    43.9 F
Cooling DD:    1287
Heating DD:    4953

Days above  90 (T090):    32.8
Days above 100 (T100):     1.3
Days below   0 (T000):     1.5
Days below  32 (T032):   109.2
------------------------------------------------------------------------------------------

Precipitation-Related Pseudonormals

For stations with short records, linear combinations of normals from nearby sites were used
to compute so-called pseudonormals.

Normal    Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec
Prcp:    2.56   2.68   3.57   4.06   4.70   4.01   4.26   3.55   3.58   3.71   4.53   3.07
------------------------------------------------------------------------------------------
Annual Values

Precipitation:   44.28 inches

------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------
KEY:
High - average daily high temperature, degrees F
Mean - average daily mean temperature, degrees F
Low - average daily low temperature, degrees F
CDD - cooling degree days, base 50F
HDD - heating degree days, base 50F
T090 - number of Days with Temperatures above 90 degrees F
T100 - number of Days with Temperatures above 100 degrees F
T000 - number of Days with Temperatures below 0 degrees F
T032 - number of Days with Temperatures below 32 degrees F
Prcp - precipitation, inches
Snow - snowfall, inches
P001 - number of Days with Precipitation of 0.01 inches or more
P010 - number of Days with Precipitation of 0.10 inches or more
P100 - number of Days with Precipitation of 1.00 inches or more
S001 - number of Days with Snowfall of 0.1 inches or more
S010 - number of Days with Snowfall of 1.0 inches or more
S100 - number of Days with Snowfall of 10.0 inches or more

Page Source:
Dr. Jim Angel, State Climatologist
Illinois State Water Survey
Prairie Research Institute
University of Illinois

Data Source:
NOAA National Climatic Data Center