Annette set daily record high temperatures on consecutive days in early September. The high temperature on September 5 of 79°F (26°C) broke the previous record of 77°F (25°C) set in 1949. The following day the temperature topped out at 82°F (28°C), breaking the previous record of 78°F (26°C) set in 1993 and also ties the record high for the month of September (also 82°F on September 8, 1989).
The temperature at Bettles topped out at 66°F (19°C) on September 17. This is the highest temperature of record for this date, just nipping the previous record of 65°F (18°C) set in 1973. Climate observations have been made in the Bettles area since the mid-1940s.
The low temperature at Anchorage International Airport on September 13 was 55°F (13°C). This is not only the warmest low temperature for the date but also the latest in the season Anchorage has had a low this mild. The previous latest date with a low of 55°F or higher was September 12, 2016. Prior to 2016, the latest date was September 6, 1993.
Ketchikan was soaked with almost four feet of rain during the summer. A total of 46.99" (1194mm) of rain fell June through August. This is more than twice normal and exceeds the previous record wet summer of 1967 by more than three inches.
The tempertaure rose to 86°F (30°C) on August 5 at Annette. This broke the previous record high for the date of 84°F (29°C) set in 2010 and is the highest trempertaure so late in the summer since 1990.
The temperature soared to 93°F (34°C) at the Skagway Airport on August 5. While there are breaks in the Skagway climate record, this appears to be the highest temperature in the area. The previous record was 92°F (33°C) set August 21, 1923.
June through August 2017 in Fairbanks is the the fourth warmest summer in more than a century of climate observations. The average temperature of 62.4°F (16.9°C) was 2.7°F above normal. In recent years only 2013 and 2004 were warmer. The warmth occurred in spite of the lack of any prolonged or excessive heat. In fact, the temperature exceeded 85F on only two days, which is one less than normal.
Ketchikan received 24.85" (631mm) of rain in August, the third greatest August total in nearly a century of records. All of the rain fell after August 11, capped off by 8.57" of rain on August 21 and 22, which produced flooding in parts of the area and prompted the US.Forest Service to close the Signal Creek Campground near Ward Lake.
McGrath received 1.54" (39mm) of rain on August 13. This is the greatest calendar day rainfall of record for the month of August. However, the August record rainfall in 24 hours remain 2.10" (53mm) set August 26-27, 1955. Climate observations have been made at McGrath since 1941.