downloading weather data because Mr. Grey is too lazy

01_download.py

import requests
url = 'https://api-ak.wunderground.com/api/d8585d80376a429e/history_{:04}{:02}{:02}{:04}{:02}{:02}/lang:EN/units:english/bestfct:1/v:2.0/q/EGLL.json?showObs=0&ttl=120'
for year in range(1996, 2018+1):
  print(url.format(year, 8, 1, year, 8, 31))
  text = requests.get(url.format(year, 8, 1, year, 8, 31)).text
  with open('{}-08.json'.format(year), 'w+') as fd:
    fd.write(text)

02_extract.py

import json
avg_temps = []
max_temps = []
for year in range(1996, 2018+1):
  with open('{:04}-{:02}.json'.format(year, 8)) as fd:
    data = json.load(fd)
  avg_temps.append(data['history']['summary']['temperature_avg'])
  max_temps.append(data['history']['summary']['max_temperature_max'])
print('avgs={};'.format(avg_temps))
print('maxs={};'.format(max_temps))

03_plot.m

xs=[1996:1:2018];
% below is output of 02_extract.py
avgs=[65, 70, 64, 64, 66, 65, 66, 69, 66, 64, 63, 62, 64, 65, 62, 63, 66, 66, 63, 64, 67, 63, 66];
maxs=[89, 87, 86, 91, 77, 87, 86, 98, 86, 87, 82, 82, 80, 82, 77, 84, 86, 93, 79, 87, 91, 81, 90];
plot(xs,avgs,";avg temp;","color","blue",xs,maxs,";max temp;","color","red");
grid on
grid minor on