Weather is an important factor that influences aircraft performance and flying safety. It is the state of the atmosphere at a given time and place, with respect to variables such as temperature (heat or cold), moisture (wetness or dryness), wind velocity (calm or storm), visibility (clearness or cloudiness), and barometric pressure (high or low).
AC-00-6B Avaition Weather
AC-00-45H Aviation Weather Services
AIM 7-1 Section 1. Meterology
91.103 Preflight action
PHAK Ch-12 Weather Theory
PHAK Ch-13 Aviation Weather Services
ERAU Aviation Weather Guide
Embry-Riddle Weather Information Sheet
Private Pilot ACS Page 5 Task C. Weather Information