 a WC app, a service of Arizona Western College for more than 50 years. Trusted news for Yuma and La Paz counties. Pretty steady weather with an excessive heat warning continuing today across southwest Arizona. Yuma's high could reach 113 today with 20 mph winds. The low tonight for Yuma around 82. Parker's high could reach 116 today with 5 to 10 mph winds. The low tonight for Parker around 82.