The conversion

120°C = 248°F

°F = (°C × 9/5) + 32, so (120 × 9/5) + 32 = 248.

120 °C is well outside the range outdoor air occupies on Earth, so there is no useful weather description for it — this page is arithmetic rather than a forecast.

Convert something else

68°F

The range either side

Neighbouring values, for when the number you actually wanted was a degree or two away.

Celsius to Fahrenheit either side of 120 °C.
CelsiusFahrenheit
115 °C239 °F
116 °C240.8 °F
117 °C242.6 °F
118 °C244.4 °F
119 °C246.2 °F
120 °C248 °F
121 °C249.8 °F
122 °C251.6 °F
123 °C253.4 °F
124 °C255.2 °F
125 °C257 °F

The other direction

248 °F converts back to 120 °C, which is the same relationship read the other way. Going from Fahrenheit to Celsius, subtract 32 first and then multiply by 5/9 — doing it in the other order is the usual mistake and produces a plausible-looking wrong answer.

The full converter handles any value, in either direction, including kelvin, and shows the formula as it works.