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May 2001
Preliminary Climatological Summary for Ketchikan, Alaska

 

Source: U.S. Dept. of Commerce
National Oceanic & Atmospheric Administration
National Weather Service
Observations by the FAA Flight Service Office, Ketchikan International Airport

 


Temperature 
Mean  45.4º
Normal 48.6º
Departure -3.2º
 
Highest mean temperature of record for May 53.6º in 1912
Lowest mean temperature of record for May 43.7º in 1920
   
Highest temperature this month 58º on 28, 25
Lowest temperature this month 30º on 6th
   
Highest temperature of record for May 87º in 1963
Lowest temperature of record for May 28º in 1971
 
Precipitation  
Total 22.44"
(New record)
Normal 8.74"
Departure +13.70 inches
   
Greatest precipitation of record for May 21.03" in 1966
Least precipitation of record for May 2.36" in 1911
 
Greatest precipitation in 24 hours this month 4.65" on 30-31
Greatest precipitation in 24 hours of record 5.87" in 1924
Number of days with measurable precipitation  27 days
(tied record)
 
Greatest # of days with measurable precipitation 27 in 1976
Least # of days with measurable precipitation 5 in 1911
 
Total precipitation since January 2001 79.52"
Normal precipitation since January 56.99"
Departure from normal +22.53"

Official report May 2001 - Weather Service - Climatological Summary

May 2001 Daily Precipitation & Temperature - Ketchikan Flight Service

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