Commercial Agriculture Automated Weather Station Network Daily Weather Report Station: Saint Louis, MO, Saint Louis Science Center 4/24/2025 Max. Temp. = 81.4 deg. F Min. Temp. = 57.0 deg. F Avg. Temp. = 70.6 deg. F Max. Wind = 12.8 mi/hr Time of Max Wind = 1239 CST Avg. Wind = 1.9 mi/hr Max. RH = 78.5 % Time of Max. RH = 600 CST Min. RH = 39.8 % Time of Min. RH = 1200 CST Max. Bare Soil Temp. at 2 in. = 85.2 deg. F Time of Max. Bare Soil Temp. = 1300 CST Min. Bare Soil Temp. at 2 in. = 60.1 deg. F Time of Min. Bare Soil Temp. = 600 CST Avg. Vapor Press. = 1.4 mb Avg. Vapor Press. Def. = 1.2 mb Precip. = 0.00 in Radiation = 16.71 MJoules/sq. meter Potential Evapotranspiration = 0.17 inches Growing Degree Days (45 F) = 25.6 Growing Degree Days (50 F) = 20.6 Growing Degree Days (55 F) = 15.6 Growing Degree Days (60 F) = 10.6 Heating Degree Days (65 F) = 0.0 Cooling Degree Days (65 F) = 5.6 Maximum Livestock Heat Stress Index = 76 Definition of Categories... HTI < 75 ... No Stress HTI = 75 to 78 ... Alert HTI = 79 to 83 ... Dangerous HTI = > 83 ... Emergency