May Among Coldest on Record for Western and Central Wyoming

A series of southerly tracking low pressure systems brought cold Canadian air and increased precipitation to Wyoming in May.

May 2010 has gone down as one of the coldest on record.



May was the second coldest on record for Casper

TOP TEN COLDEST MAYS IN CASPER

YEAR TEMPERATURE (°F)

1. 1950 46.2
2. 2010 46.5
3. 1946 47.2
4. 1968 48.1
5. 1995 48.3
6. 1983 48.4
7. 1953 48.6
8. 1975 48.8
9. 1967 49.1
10. 1979 49.3


May was tied for the fifth coldest on record for Lander

TOP TEN COLDEST MAYS IN LANDER

YEAR TEMPERATURE (°F)

1. 1917 45.8
2. 1950 45.9
3T. 1935 46.3
3T. 1907 46.3
5T. 2010 46.8
5T. 1892 46.8
7. 1909 46.9
8. 1953 47.3
9. 1916 47.7
10. 1905 48.0


May was the third coldest and tenth wettest on record for Riverton

TOP TEN COLDEST MAYS IN RIVERTON

YEAR TEMPERATURE (°F)

1. 1950 47.3
2. 1935 48.3
3. 2010 48.5
4. 1983 48.7
5. 1975 48.8
6. 1953 49.2
7. 1995 49.5
8T. 1946 50.0
8T. 1933 50.0
10. 1979 50.2


TOP TEN WETTEST MAYS IN RIVERTON

YEAR PRECIPITATION (INCHES)

1. 1921 6.22
2. 2008 4.75
3. 1924 4.59
4. 1978 4.44
5. 1971 4.42
6. 1908 4.27
7. 1957 4.19
8. 1942 3.98
9. 1935 3.94
10. 2010 3.91


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