Weather App in Python using Tkinter module

Last Updated : 23 Jul, 2025

In this article, we are going to discuss how to create a weather app using tkinter. The GUI app will tell us the current weather of a particular city along with temperature details along with other details.

Modules required:

Tkinter: It is a built-in python library for making GUI using tkinter toolkit.
Requests: It is a library which helps in fetching the data with the help of URL. It can be installed using the below command:

pip install requests

Approach:

Firstly, we have to use a weather API for fetching the data from the Open Weather Map website by generating an API key, and then we need to create a configuration file to store the key. And finally using that configuration file in the python script.

Steps to generate an API key:

Login in the Open Weather Map
Go to the API section. Then in the Current Weather Data section click on the Api doc.
Now in the API Call section, we have the link of api.openweathermap.org/data/2.5/weather?q={city name}&appid={API key}
Click on the API key on the link it will direct to the page from where you can get the key. The generated key looks like this:

Steps to create the Configuration file:

Create a file named config.ini.
Write key name enclosed in closed brackets in it here [gfg].
Create a variable key(here key) and paste the key you copied as shown below:

Steps to create the Python script:

Import modules.

Python3

# import required modules
from configparser import ConfigParser
import requests
from tkinter import *
from tkinter import messagebox

We have to first make the body of the GUI with the help of tkinter.

Python3

# create object
app = Tk()

# add title
app.title("Weather App")

# adjust window size
app.geometry("300x300")

# add labels, buttons and text
city_text = StringVar()
city_entry = Entry(app, textvariable=city_text)
city_entry.pack()

Search_btn = Button(app, text="Search Weather",
                    width=12, command=search)
Search_btn.pack()

location_lbl = Label(app, text="Location", 
                     font={'bold', 20})
location_lbl.pack()

temperature_label = Label(app, text="")
temperature_label.pack()

weather_l = Label(app, text="")
weather_l.pack()

app.mainloop()

Read the config.ini file and then load the key and URL in the program.

Python3

# extract key from the 
# configuration file
config_file = "config.ini"
config = ConfigParser()
config.read(config_file)
api_key = config['gfg']['api']
url = 'http://api.openweathermap.org/data/2.5/weather?q=%7B%7D&appid=%7B%7D'

Make a getweather() function to get the weather of a particular location.

Python3

# explicit function to get
# weather details
def getweather(city):
    result = requests.get(url.format(city, api_key))
    
    if result:
        json = result.json()
        city = json['name']
        country = json['sys']
        temp_kelvin = json['main']['temp']
        temp_celsius = temp_kelvin-273.15
        weather1 = json['weather'][0]['main']
        final = [city, country, temp_kelvin, 
                 temp_celsius, weather1]
        return final
    else:
        print("NO Content Found")

Search function so that we can get the output weather details.

Python3

# explicit function to
# search city
def search():
    city = city_text.get()
    weather = getweather(city)
    
    if weather:
        location_lbl['text'] = '{} ,{}'.format(weather[0], weather[1])
        temperature_label['text'] = str(weather[3])+"   Degree Celsius"
        weather_l['text'] = weather[4]
        
    else:
        messagebox.showerror('Error', "Cannot find {}".format(city))

Below is the complete program:

Python3

# import required modules
from configparser import ConfigParser
import requests
from tkinter import *
from tkinter import messagebox

# extract key from the
# configuration file
config_file = "config.ini"
config = ConfigParser()
config.read(config_file)
api_key = config['gfg']['api']
url = 'http://api.openweathermap.org/data/2.5/weather?q=%7B%7D&appid=%7B%7D'


# explicit function to get
# weather details
def getweather(city):
    result = requests.get(url.format(city, api_key))
    
    if result:
        json = result.json()
        city = json['name']
        country = json['sys']
        temp_kelvin = json['main']['temp']
        temp_celsius = temp_kelvin-273.15
        weather1 = json['weather'][0]['main']
        final = [city, country, temp_kelvin, 
                 temp_celsius, weather1]
        return final
    else:
        print("NO Content Found")


# explicit function to
# search city
def search():
    city = city_text.get()
    weather = getweather(city)
    if weather:
        location_lbl['text'] = '{} ,{}'.format(weather[0], weather[1])
        temperature_label['text'] = str(weather[3])+"   Degree Celsius"
        weather_l['text'] = weather[4]
    else:
        messagebox.showerror('Error', "Cannot find {}".format(city))


# Driver Code
# create object
app = Tk()
# add title
app.title("Weather App")
# adjust window size
app.geometry("300x300")

# add labels, buttons and text
city_text = StringVar()
city_entry = Entry(app, textvariable=city_text)
city_entry.pack()
Search_btn = Button(app, text="Search Weather", 
                    width=12, command=search)
Search_btn.pack()
location_lbl = Label(app, text="Location", font={'bold', 20})
location_lbl.pack()
temperature_label = Label(app, text="")
temperature_label.pack()
weather_l = Label(app, text="")
weather_l.pack()
app.mainloop()

Output:

How to Build a Weather App in Python? | Python Project

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