Don't be misled by averages, the weather in North Texas changes quickly and can be extreme.  Winters from December to February are often mild, with temperatures exceeding 50 degrees (F), and sometimes climbing into the 70s (F) for several days.  However, cold fronts can suddenly drop temperatures into the 20s or lower for more than a week at a time.  Snow is infrequent, but ice storms typically occur one or more times a year and can shut down the city for several days.  Freezing temperatures at night can start as early as October and end as late as mid-April.

Spring begins cool and blustery in March, and ends very warm and humid in May.  April and early-May typically have pleasant temperatures, but they can be rainy.  Summer begins in June, and can run into early-October before temperatures consistently fall into the lower 90's (F).  Summer rainfall typically occurs as a result of afternoon and evening thunderstorms which can disrupt air travel.  Summer temperatures will typically be in the 90s (F), but late-June through September can see consecutive days of 100+ degree (F) temperatures.   Very hot days will often be dry and breezy, while "cooler" summer days can be humid.  The summer heat creates a "live with it" attitude; residents learn to be active in the morning and evenings, and try and avoid the hottest part of the day.  Drinking plenty of non-alcoholic fluids is essential.

At some point in September or October, a series of cool fronts ends the Summer heat cycle, and the fall is typically the most pleasant time of the year.  High temperatures in October are often in the 70s or 80s (F), and by December are often in the 60s to 70s.  Evening lows are typically not below freezing until November, and will often stay above freezing at night.  Long periods of rain can occur in November and December, and ice storms can occur as early as late-November.

North Texas weather can be mild for much of the year, and you are more likely to have a week of pleasant weather than extreme weather for most of the year.  July and August will likely not be rainy, but you should plan for the heat.  Anyone traveling to North Texas should pay attention to the forecast, and be aware of the extremes that can occur during your trip.