Commercial Agriculture Automated Weather Station Network
Daily Weather Report
Station:   Saint Louis, MO, Saint Louis Science Center
10/21/2025

Max. Temp.  =  66.6 deg. F
Min. Temp.  =  48.3 deg. F
Avg. Temp.  =  57.3 deg. F

Max. Wind  =  18.9 mi/hr
Time of Max Wind  =  1320 CST
Avg. Wind  =   1.8 mi/hr

Max. RH  =  73.4 %
Time of Max. RH  =  700 CST
Min. RH  =  24.4 %
Time of Min. RH  =  1400 CST

Max. Bare Soil Temp. at 2 in.  =  70.2 deg. F
Time of Max. Bare Soil Temp.  =  1300 CST
Min. Bare Soil Temp. at 2 in.  =  53.6 deg. F
Time of Min. Bare Soil Temp.  =  0 CST

Avg. Vapor Press.  =    0.7 mb
Avg. Vapor Press. Def.  =    0.9 mb

Precip.  =  0.00 in

Radiation = 13.91 MJoules/sq. meter

Potential Evapotranspiration  =  0.12 inches

Growing Degree Days (45 F) = 12.3
Growing Degree Days (50 F) =  7.3
Growing Degree Days (55 F) =  2.3
Growing Degree Days (60 F) =  0.0

Heating Degree Days (65 F) =  7.7

Cooling Degree Days (65 F) =  0.0

Maximum Livestock Heat Stress Index  =    66

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

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