<div class="wrapper">
  <div class="weather">
    <div class="svg">
      <svg version="1.1" id="rainclouds" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
         width="297px" height="308.5px" viewBox="0 0 297 308.5" enable-background="new 0 0 297 308.5" xml:space="preserve">
        <g class="weather__raindrops">
          <g class="raindrops--right">
        <path class="weather__raindrops--1" d="M165.5,171.4c2.4-4.6,2.6-25.3,2.6-25.3s-16.8,12.3-19.2,16.8c-2.4,4.6-0.6,10.2,4,12.5
          C157.6,177.7,163.2,176,165.5,171.4L165.5,171.4z M165.5,171.4"/>
        <path class="weather__raindrops--2" d="M200,171.4c2.4-4.6,2.6-25.3,2.6-25.3s-16.8,12.3-19.1,16.8c-2.4,4.6-0.6,10.2,4,12.5
          C192.1,177.7,197.7,176,200,171.4L200,171.4z M200,171.4"/>
        <path class="weather__raindrops--3" d="M224.6,175.4c4.6,2.4,10.2,0.6,12.5-4c2.4-4.6,2.6-25.3,2.6-25.3s-16.8,12.3-19.2,16.8
          C218.3,167.4,220.1,173,224.6,175.4L224.6,175.4z M224.6,175.4"/>
        <path class="weather__raindrops--4" d="M161,209.9c4.6,2.4,10.2,0.6,12.5-4c2.4-4.6,2.6-25.3,2.6-25.3s-16.8,12.2-19.2,16.8
          C154.6,201.9,156.4,207.5,161,209.9L161,209.9z M161,209.9"/>
        <path class="weather__raindrops--5" d="M195.5,209.9c4.6,2.4,10.2,0.6,12.5-4c2.4-4.6,2.6-25.3,2.6-25.3s-16.8,12.2-19.2,16.8
          C189.1,201.9,190.9,207.5,195.5,209.9L195.5,209.9z M195.5,209.9"/>
      </g>
          <g class="raindrops--left">
        <path class="weather__raindrops--6" d="M68.5,205.9c2.4-4.6,2.6-25.3,2.6-25.3S54.4,192.8,52,197.3c-2.4,4.6-0.6,10.2,4,12.5
          C60.6,212.2,66.2,210.4,68.5,205.9L68.5,205.9z M68.5,205.9"/>
        <path class="weather__raindrops--7" d="M103,205.9c2.4-4.6,2.6-25.3,2.6-25.3s-16.8,12.3-19.1,16.8c-2.4,4.6-0.6,10.2,4,12.5
          C95.1,212.2,100.7,210.4,103,205.9L103,205.9z M103,205.9"/>
        <path class="weather__raindrops--8" d="M127.6,209.9c4.6,2.4,10.2,0.6,12.5-4c2.4-4.6,2.6-25.3,2.6-25.3s-16.8,12.3-19.2,16.8
          C121.3,201.9,123.1,207.5,127.6,209.9L127.6,209.9z M127.6,209.9"/>
        <path class="weather__raindrops--9" d="M64,244.3c4.6,2.4,10.2,0.6,12.5-4c2.4-4.6,2.6-25.3,2.6-25.3S62.4,227.2,60,231.8
          C57.6,236.4,59.4,242,64,244.3L64,244.3z M64,244.3"/>
        <path class="weather__raindrops--10" d="M98.5,244.3c4.6,2.4,10.2,0.6,12.5-4c2.4-4.6,2.6-25.3,2.6-25.3s-16.8,12.2-19.2,16.8
          C92.1,236.4,93.9,242,98.5,244.3L98.5,244.3z M98.5,244.3"/>
      </g>
        </g>
        <g class="weather__clouds">
          
            <path d="M142.5,127.8c0,0-31.4-6.7-31.4-36.7
              s26.7-39.9,36.5-39.9s13.3,1.6,13.3,1.6s4.4-36.9,41.2-36.9s41.5,36.4,41.4,39.8c0,3.4,0.2,4.8-0.6,9.2c0,0,5.2-1.7,12.6-1.7
              c10.8,0,30.1,8,30.1,34s-30.4,30.6-30.4,30.6H142.5z"/>
            <path d="M46.2,164.7c0,0-31.4-6.7-31.4-36.7
              s26.7-39.9,36.5-39.9s13.3,1.6,13.3,1.6s4.4-36.9,41.2-36.9s41.5,36.4,41.4,39.8c0,3.4,0.2,4.8-0.6,9.2c0,0,5.2-1.7,12.6-1.7
              c10.8,0,30.1,8,30.1,34s-30.4,30.6-30.4,30.6H46.2z"/>
          
        </g>
        <g class="weather__lightning">
          <polygon points="125.436,171.75 111.1,195.781 133.401,190.239 111.1,235.75 145.6,180.6 126.35,185.6 138,171.75 
            "/>
          <polygon points="207.686,144.42 193.35,168.451 215.651,162.909 193.35,208.42 227.85,153.27 208.6,158.27 
            220.249,144.42 "/>
        </g>
      </svg>

    </div>
    <span class="weather__date">New York, NY &#8212; <span id="date"></span></span>
    <h2 class="weather__pretitle">It is Raining.</h2>
    <h1 class="weather__title">You will get wet.</h1>
  </div>
</div>
$blue: #27AAE1;
$yellow: #FFE600;
$slate: #555;
$gray: #bbb;

* {
  box-sizing: border-box;  
}

html {
  font-size: 16px;
}

.wrapper {
  height: 100vh;
  width: 100vw;
  background-color: #f8f8f8;
  
  display: flex;
  justify-content: center;
  align-items: center;

}

.weather {
  position: relative;
  background-color: #fff;
  padding: 45px 30px 30px 30px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
  
  font-family: 'Bitter', serif;
  color: $slate;
  
  &__date {
    font-size: 0.75em;
    color: $gray;
    position: absolute;
    top: 30px;
    right: 30px;
    width: calc(100% - 60px);
    text-align: right;
  }
  &__pretitle {
    font-size: 1em;
    text-transform: uppercase;
  }
  &__title {
    font-size: 2em;
    font-family: 'Courgette', cursive;
    line-height: 1.4;
  }
  
  &__raindrops {
    path {
      fill: $blue;
      //animation: rain 3s infinite;
    }
    
    @for $i from 1 through 10 {
        &--#{$i} {
          animation: rain #{random(4)/2}s #{random(5)/10}s infinite;
        }
    }
    
  }
  
  &__clouds path {
    fill: white;
    stroke: $blue;
    stroke-width: 6;
    stroke-miterlimit: 6;
    &:first-child {
      animation: thunder 3s 1s infinite linear;
    }
    &:last-child {
      animation: thunder 3s 1.2s infinite linear;
    }
  }
  &__lightning polygon {
    fill: $yellow;
    opacity: 0;
    
    &:first-child {
      animation: lightning 3s 1s infinite linear;
    }
    &:last-child {
      animation: lightning 3s 1.2s infinite linear;
    }
  }
}

@keyframes rain {
  0% {
    opacity: 1;
    transform: translate(0,0);
  }
  100% {
    opacity: 0;
    transform: translate(-25px,35px);
  }
}

@keyframes thunder {
  0% {
    fill: #fff;
  }
  1% {
    fill: #333;
  }
  2% {
    fill: #fff;
  }
  5% {
    fill: #fff;
  }
  6% {
    fill: #333;
  }
  12% {
    fill: #fff;
  }
}

@keyframes lightning {
  0% {
    opacity: 0;
  }
  1% {
    opacity: 1;
  }
  5% {
    opacity: 0;
  }
  6% {
    opacity: 1;
  }
  16% {
    opacity: 0;
  }
}
View Compiled
var today = new Date();
var dd = today.getDate();
var mm = today.getMonth()+1; //January is 0!
var yyyy = today.getFullYear().toString().substr(2,2);

if(dd<10) {
    dd='0'+dd
} 

if(mm<10) {
    mm='0'+mm
} 

today = mm+'.'+dd+'.'+yyyy;
document.getElementById("date").innerHTML = today;

External CSS

  1. https://fonts.googleapis.com/css?family=Bitter|Courgette

External JavaScript

This Pen doesn't use any external JavaScript resources.