Alaska Climate Research Center

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Juneau September 2012


The average temperature in Juneau for September was 49.6°F, 0.4°F below the long term mean. The maximum temperature of the month was 61°F, occurring on the 4thand 21st, while the minimum was 38°F and occurred on the 19thand 30th. Temperatures stayed normal for most of the month, with little daily variation due to the high amount of cloudiness.
Trace amounts of precipitation, or greater, fell on twenty-nine days of the month hence the total was higher than normal at 11.02", this is 2.38" above the expected amount of 8.64". While no new daily precipitation records were set, more than one inch fell on three days of the month, and the total made this the 10thwettest September on record. The average wind speed was 8.8 mph, and the maximum wind speed of 44 mph occurred on the 26th, blowing from a southeasterly direction.