n. 1  1. An inborn pattern of behavior that is characteristic of a species and is often a response to specific environmental stimuli: the spawning instinct in salmon; altruistic instincts in social animals. 2  2. A powerful motivation or impulse. 3  3. An innate capability or aptitude: an instinct for tact and diplomacy.
Daylight Hours: 16 hours, 15 minutes (-6m 51s) The Sun's altitude in Fairbanks today. The horizontal line signifies the horizon, the vertical lines show the times of sunrise and sunset. Altitude and heading are displayed in the box on the right. The graph defaults to current time.
Hours of daylight range from 14 to 18, with June having the most daylight hours and September having the least. South central Alaska has similar weather, with average temperature highs of 55 degrees Fahrenheit in both May and September; average temperatures range between 62 and 65 degrees F in June, July and August. May, June and July have the most daylight hours (17 to 18), while August averages 16 hours of daylight.