Commercial Agriculture Automated Weather Station Network
Daily Weather Report
Station:   Audrain County, Van-Far R-I Schools (Vandalia)
12/18/2025

Max. Temp.  =  56.6 deg. F
Min. Temp.  =  23.2 deg. F
Avg. Temp.  =  43.3 deg. F

Max. Wind  =  36.2 mi/hr
Time of Max Wind  =  950 CST
Avg. Wind  =  13.6 mi/hr

Max. RH  =  88.9 %
Time of Max. RH  =  1000 CST
Min. RH  =  57.7 %
Time of Min. RH  =  2200 CST

Max. Bare Soil Temp. at 2 in.  =  43.8 deg. F
Time of Max. Bare Soil Temp.  =  1100 CST
Min. Bare Soil Temp. at 2 in.  =  33.5 deg. F
Time of Min. Bare Soil Temp.  =  100 CST

Max. Bare Soil Temp. at 4 in.  =  44.1 deg. F
Time of Max. Bare Soil Temp. at 4 in. =  1600 CST
Min. Bare Soil Temp. at 4 in.  =  36.7 deg. F
Time of Min. Bare Soil Temp. at 4 in. =  100 CST

Avg. Vapor Press.  =    0.8 mb
Avg. Vapor Press. Def.  =    0.2 mb

Precip.  =  0.41 in

Radiation = 4.08 MJoules/sq. meter

Potential Evapotranspiration  =  0.04 inches

Growing Degree Days (45 F) =  0.0
Growing Degree Days (50 F) =  0.0
Growing Degree Days (55 F) =  0.0
Growing Degree Days (60 F) =  0.0

Heating Degree Days (65 F) = 21.7

Cooling Degree Days (65 F) =  0.0

Minimum Wind Chill Index (F)  =  10.2

Maximum Livestock Heat Stress Index  =    59

Definition of Categories...
HTI < 75 ... No Stress
HTI = 75 to 78  ...  Alert
HTI = 79 to 83  ...  Dangerous
HTI = > 83  ...  Emergency

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