The conversion

73°C = 163.4°F

°F = (°C × 9/5) + 32, so (73 × 9/5) + 32 = 163.4.

73 °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 73 °C.
CelsiusFahrenheit
68 °C154.4 °F
69 °C156.2 °F
70 °C158 °F
71 °C159.8 °F
72 °C161.6 °F
73 °C163.4 °F
74 °C165.2 °F
75 °C167 °F
76 °C168.8 °F
77 °C170.6 °F
78 °C172.4 °F

The other direction

163.4 °F converts back to 73 °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.