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Juneau September 2010


The mean monthly temperature in Juneau was 50.9°F, 1.4°F above normal for the month. The high temperature was 72°F on the 15th, and the low was 31°F on the 21st. Juneau set four new high temperature records for the following days; the 15th recorded a high of 72°F, the 16th recorded 70°F, the 17th recorded 70°F and the 18th recorded 70°F. The old records were, respectively, 67°F in 1967, 66°F in 1957, 64°F in 1986 and 65°F in 1957. The first frost date for Juneau occurred on the 21st with a low temperature of 31°F, the only day with a temperature below freezing. The recorded precipitation for September was 6.24”, 18% below normal. A new precipitation record of 1.11” was set on the 3rd, smashing the old record of 0.97” set in 1983. Eight days following that new record, Juneau began a series of dry days, culminating in 12-consecutive dry days, the 11th through the 22nd, a new record; the old record was 10-consecutive dry days set in 1973. Winds averaged 5.3 mph at the airport and on the 28th a peak gust of 43 mph was reported.