Random Weather

 Need to determine the weather randomly...I've got you covered.

1D20	Spring	Summer	Autumn	Winter
1	Unseasonably Cold & Wet/snow	Unseasonably Cold & Wet	Unseasonably Cold & Wet/snow	Unusually Heavy Snow
2	Storm	Storm	Storm	Storm
3	Cold and dry	Temperate & Wet	Storm	Storm
4	Cold and dry	Temperate & Wet	Storm	Snow
5	Temperate & Wet	Temperate & Wet	Cold & wet	Snow
6	Temperate & Wet	Overcast & Temperate	Cold & wet	Snow
7	Overcast & Temperate	Overcast & Temperate	Cold & wet	Cold & wet
8	Overcast & Temperate	Overcast & Temperate	Temperate & Wet	Cold & wet
9	Overcast & Temperate	Sun and showers	Temperate & Wet	Cold & wet
10	Overcast & Temperate	Sun and showers	Temperate & Wet	Cold & wet
11	Sun and showers	Warm and fine	Temperate & Wet	Cold & wet
12	Sun and showers	Warm and fine	Overcast & Temperate	Overcast & cold
13	Sun and showers	Warm and fine	Overcast & Temperate	Overcast & cold
14	Sun and showers	Warm and fine	Overcast & Temperate	Overcast & cold
15	Warm and fine	Warm and fine	Overcast & Temperate	Overcast & cold
16	Warm and fine	Warm and fine	Warm and fine	Cold and fine
17	Warm and fine	Warm and fine	Warm and fine	Cold and fine
18	Warm and fine	Warm and fine	Warm and fine	Cold and fine
19	Warm and fine	Warm and fine	Warm and fine	Overcast & Temperate
20	Unseasonably Hot	Heatwave	Unseasonably Hot	Unseasonably Warm