By Carter McBride, Updated Mar 24, 2022
The temperature rise indicates how much the temperature changes over a chosen period—whether it's a single day, a week, or a year. To determine this rise, all you need is a reliable temperature measurement and a straightforward subtraction.
Reputable sources such as NOAA and Weather.com provide daily high and low temperatures, while a calibrated thermometer offers direct readings. The following steps walk you through the calculation.
Locate the temperature at the beginning of your period. For instance, if yesterday’s high was 76 °F, that’s your starting value.
Find the temperature at the end of your period. If today’s high is 80 °F, that becomes your ending value.
Subtract the starting temperature from the ending temperature: 80 °F – 76 °F = 4 °F. A 4‑degree increase represents the temperature rise.
Using trustworthy data—whether from an official climate agency or a calibrated thermometer—ensures your calculation reflects real-world changes.
