Commercial Agriculture Automated Weather Station Network Daily Weather Report Station: Audrain County, Van-Far R-I Schools (Vandalia) 10/16/2025 Max. Temp. = 82.0 deg. F Min. Temp. = 59.7 deg. F Avg. Temp. = 69.7 deg. F Max. Wind = 17.8 mi/hr Time of Max Wind = 1327 CST Avg. Wind = 4.7 mi/hr Max. RH = 87.1 % Time of Max. RH = 700 CST Min. RH = 45.3 % Time of Min. RH = 1500 CST Max. Bare Soil Temp. at 2 in. = 74.1 deg. F Time of Max. Bare Soil Temp. = 1500 CST Min. Bare Soil Temp. at 2 in. = 63.2 deg. F Time of Min. Bare Soil Temp. = 700 CST Max. Bare Soil Temp. at 4 in. = 76.6 deg. F Time of Max. Bare Soil Temp. at 4 in. = 1500 CST Min. Bare Soil Temp. at 4 in. = 64.0 deg. F Time of Min. Bare Soil Temp. at 4 in. = 800 CST Avg. Vapor Press. = 1.6 mb Avg. Vapor Press. Def. = 0.9 mb Precip. = 0.00 in Radiation = 12.89 MJoules/sq. meter Potential Evapotranspiration = 0.12 inches Growing Degree Days (45 F) = 24.7 Growing Degree Days (50 F) = 19.7 Growing Degree Days (55 F) = 14.7 Growing Degree Days (60 F) = 9.7 Heating Degree Days (65 F) = 0.0 Cooling Degree Days (65 F) = 4.7 Maximum Livestock Heat Stress Index = 77 Definition of Categories... HTI < 75 ... No Stress HTI = 75 to 78 ... Alert HTI = 79 to 83 ... Dangerous HTI = > 83 ... Emergency