Alaska Climate Research Center

Home > City Summaries > Ketchikan January 2010

Ketchikan January 2010


Ketchikan is the highlight this January, breaking two temperature records and two precipitation records. On the 11th of the month a high temperature of 50°F tied the 1981 record high temperature, and on the 20th of January, the high temperature reached 55°F, breaking the old record of 51°F that had been set in 1995. The mean temperature for the month was 40.2°F, a full 6.6°F higher than the mean. Precipitation in Ketchikan totaled 22.62” this month, almost doubling the normal amount of precipitation. A record amount of rain fell on the 9th, at 2.50”, followed by 6.02” on the 10th. The previous records were 2.4” and 2.27” respectively. This rainfall event prompted the NWS to issue a small stream flood advisory, on the afternoon of the 10th, after a Weather Spotter had observed ponding on the Tongass Highway and alerted state troopers to the hazard. Heating degree-days were only 465dd in January, the mean being 973, less than half the normal amount. No snow was reported in Ketchikan this month.