Weather Temperature: Celsius to Fahrenheit

Convert weather temperatures from Celsius to Fahrenheit. Understand international weather forecasts and know what to wear.

Celsius → Fahrenheit

°C
Decimal places:
20°C equals
68°F
celsiustofahrenheit.im

Weather Temperature Reference Guide

-20°C
-4°F
Extreme cold
Dangerous cold, frostbite risk
Details →
-10°C
14°F
Very cold
Heavy winter clothing needed
Details →
0°C
32°F
Freezing
Ice and snow possible
Details →
5°C
41°F
Cold
Winter coat required
Details →
10°C
50°F
Cool
Jacket weather
Details →
15°C
59°F
Mild
Light jacket or sweater
Details →
20°C
68°F
Comfortable
Pleasant, light clothing
Details →
25°C
77°F
Warm
T-shirt weather
Details →
30°C
86°F
Hot
Stay hydrated
Details →
35°C
95°F
Very hot
Limit outdoor activity
Details →
40°C
104°F
Extreme heat
Heat stroke risk
Details →

Understanding Weather Temperatures

Most countries around the world report weather temperatures in Celsius, while the United States uses Fahrenheit. When traveling internationally or reading foreign weather forecasts, knowing how to convert Celsius to Fahrenheit is essential.

Quick mental conversion tips

  • Double the Celsius value and add 30 for a rough estimate (e.g., 20°C ≈ 70°F)
  • 0°C = 32°F (freezing), 10°C = 50°F, 20°C = 68°F, 30°C = 86°F
  • For exact conversion: °F = (°C × 1.8) + 32

Seasonal temperature ranges

Winter
-10 to 5°C
14 to 41°F
Spring
10 to 20°C
50 to 68°F
Summer
25 to 35°C
77 to 95°F
Autumn
10 to 20°C
50 to 68°F

Frequently Asked Questions

What is 20°C in Fahrenheit for weather?

20°C equals 68°F. This is a comfortable, pleasant temperature — ideal for outdoor activities with light clothing.

What is 30°C in Fahrenheit?

30°C equals 86°F. This is hot weather. Stay hydrated and use sun protection.

What is 0°C in Fahrenheit?

0°C equals 32°F. This is the freezing point of water. Ice and snow are possible at this temperature.

What is 37°C weather in Fahrenheit?

37°C equals 98.6°F. This is extremely hot weather, similar to body temperature. Outdoor activity should be limited.

What is a comfortable outdoor temperature in Fahrenheit?

Most people find 65–75°F (18–24°C) to be the most comfortable outdoor temperature range.

How do I read a Celsius weather forecast in Fahrenheit?

Use the formula °F = (°C × 9/5) + 32. Quick reference: 0°C = 32°F, 10°C = 50°F, 20°C = 68°F, 30°C = 86°F, 40°C = 104°F.

Common Weather Temperature Conversions