The 90078 Springfield 13.25 inch Thermometer with Heat Index, Wind Chill and Humidity Readings. The Springfield 13.25 Inch Outdoor Thermometer Line is a standard of the industry. Easy -to -read dials with large ,bold numerals. The Silk Screened graphics are bold in design and graphics. The Patio Dial line is weatherproof and shatter resistant. They measure temperatures accurately from -60 F to 120 degrees F. Thermometers should be placed in a shaded area away from direct sujnlight to get the best reading.