Commercial Agriculture Automated Weather Station Network
Daily Weather Report
Station:   Saint Louis, MO, Saint Louis Science Center
8/17/2026

Max. Temp.  =  83.5 deg. F
Min. Temp.  =  71.4 deg. F
Avg. Temp.  =  76.7 deg. F

Max. Wind  =  14.4 mi/hr
Time of Max Wind  =  1043 CST
Avg. Wind  =   2.5 mi/hr

Max. RH  =  99.8 %
Time of Max. RH  =  100 CST
Min. RH  =  49.0 %
Time of Min. RH  =  1800 CST

Max. Bare Soil Temp. at 2 in.  =  91.4 deg. F
Time of Max. Bare Soil Temp.  =  1300 CST
Min. Bare Soil Temp. at 2 in.  =  76.1 deg. F
Time of Min. Bare Soil Temp.  =  0 CST

Avg. Vapor Press.  =    2.2 mb
Avg. Vapor Press. Def.  =    1.0 mb

Precip.  =  0.01 in

Radiation = 15.91 MJoules/sq. meter

Potential Evapotranspiration  =  0.17 inches

Growing Degree Days (45 F) = 31.7
Growing Degree Days (50 F) = 26.7
Growing Degree Days (55 F) = 21.7
Growing Degree Days (60 F) = 16.7

Heating Degree Days (65 F) =  0.0

Cooling Degree Days (65 F) = 11.7

Maximum Livestock Heat Stress Index  =    78

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

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